CN101157781A - Anti-static polyphenylacetylene combination and preparation method and sheet material - Google Patents
Anti-static polyphenylacetylene combination and preparation method and sheet material Download PDFInfo
- Publication number
- CN101157781A CN101157781A CNA2007101563032A CN200710156303A CN101157781A CN 101157781 A CN101157781 A CN 101157781A CN A2007101563032 A CNA2007101563032 A CN A2007101563032A CN 200710156303 A CN200710156303 A CN 200710156303A CN 101157781 A CN101157781 A CN 101157781A
- Authority
- CN
- China
- Prior art keywords
- percent
- polystyrene
- coupling agent
- static
- static polyphenylacetylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
The invention relates to an antistatic plastics sheet, in particular to an antistatic polystyrene combination, a preparation method thereof and the produced sheet prepared by the combination. The antistatic polystyrene combination is made through mixing the components of the following prescription according to weight proportion: 65.0 percent to 85.0 percent of HIPS polystyrene, 8.0 percent to 28.0 percent of methyl-acrylic acid polyethylene glycol single methyl ether ester, 3.14 percent to 6.87 percent of hydroxylethyl methacrylate, 1.72 percent to 3.97 percent of sodium perchlorate, 0.0963 percent to 0.145 percent of azobisisobutyronitrile and 0.92 percent to 2.4 percent of coupling agent. In addition, the invention discloses a sheet that is produced by three layers of materials compounded together, wherein, the materials of the upper layer and the lower layer are the antistatic polystyrene combination gained through mixing the components. The antistatic polystyrene sheet of the invention saves the consumption of the antistatic polystyrene combination, reduces cost, adopts three surface layers combination with the property of no drop-off, is characterized by lasting long effect and low humidity sensitivity and enhances level and advancement of electric products packaging.
Description
Technical field
The present invention relates to a kind of anti-static plastic sheet material, the sheet material that relates in particular to a kind of anti-static polyphenylacetylene combination and preparation method thereof and prepare by said composition.
Background technology
The packed and transported of current electronic product has all extensively adopted the polystyrene plastic goods, but common frosting resistance is all greater than 10
12More than Ω/sq, the electroconductibility extreme difference easily produces static and is difficult for leading away in the packed and transported process of electronic product, electronic product is caused very big harm, so Development and Production modification anti-static plastic is imperative.The surface resistivity of the common anti-static polyphenylacetylene plastics of producing is many 10 at present
9-10
11Between Ω/sq, though have certain antistatic property, but can satisfy the demand of the little low side electronic product of general electrostatic sensitivity to the greatest extent, but development along with electronic industry, integrated level is more and more higher, and microelectronics is more and more accurate, and its electrostatic sensitivity is increasing, as field-effect transistor, extensive integrated electronics etc., then must select for use in low humidity condition lower surface resistivity and can be stabilized in 10
9Ω/sq or following, and have long-lasting, can not separate out the antistatic plastic materials of pollution substance again, satisfy the requirement of electronics technology development.
Present modification anti-static plastic mainly contains two big verieties:
The first kind is conductivity type polystyrene plastic such as interpolation carbon black, and its product surface resistivity is 10
4-10
6Ω/sq, but this material exists serious defective and deficiency, because carbon black mainly is to reach anlistatig effect by interfacial conductive mechanism in material, usually the addition of carbon black is higher, carbon black in use easily comes off from wrapping material and causes pollution to product and environment, influence the quality and the life-span of electronic product, and can only make black, use range also is subjected to certain restriction.
Second class has hygroscopic effect and the harmless static inhibitor of p-poly-phenyl vinyl plastics performance for adding some, by drawing airborne moisture, reduces surface resistivity, to reach antistatic performance.Static inhibitor mainly is divided into ionic, non-ionic type, polymer etc. usually by chemical structure; On using method, be divided into two kinds of external coated method and inner mixing methods.The static inhibitor that uses both at home and abroad is mainly ionic and non-ionic type at present, and the material surface resistivity that uses this type of static inhibitor is 10
9-10
11Between Ω/sq.Though can prepare the product of higher clarity, because this type of static inhibitor is to reach antistatic effect by the airborne moisture of absorption, and easily separates out and make surperficial variation, add easy decomposes in man-hour, excessive for the dependency of humidity.This type of static inhibitor has just lost antistatic property, the surface resistivity of material 〉=10 under the environment of relative humidity≤40%RH
12Ω/sq becomes isolator, and its antistatic property is extremely unstable, more is unable to undergo washing or long-time the use, does not reach long-lasting requirement.
Summary of the invention
An object of the present invention is to provide a kind of anti-static polyphenylacetylene combination long-acting lastingly, that moisture sensitivity is little that has.
Another object of the present invention provides the preparation method of above-mentioned anti-static polyphenylacetylene combination.
Another object of the present invention provides the plastics sheet of being made by above-mentioned anti-static polyphenylacetylene combination.
In order to realize first purpose, the present invention has adopted following technical scheme:
A kind of anti-static polyphenylacetylene combination, said composition makes by the component that comprises following prescription is mixing by weight percentage: HIPS polystyrene 65.0～85.0%, Methylacrylic acid polyethylene glycol single armor ether ester 8.0～28.0%, hydroxyethyl methylacrylate 3.14～6.78%, sodium perchlorate 1.72～3.97%, Diisopropyl azodicarboxylate 0.0963～0.145%, coupling agent 0.92～2.4%.
As preferred version, said composition makes by the component that comprises following prescription is mixing by weight percentage: HIPS polystyrene 70.0～80.0%, Methylacrylic acid polyethylene glycol single armor ether ester 16.0～20.0%, hydroxyethyl methylacrylate 4.0～6.0%, sodium perchlorate 2.0～3.5%, azobisisobutyronitrile 0.10～0.13%, coupling agent 1.0～2.0%.
As preferred version, said composition also comprises other auxiliary agent of 0.05～0.18%, and described other auxiliary agent is one or more in antioxidant, antiaging agent, toughener and the toughner.
As preferred version, coupling agent is selected silane coupling agent KH-570 for use.
The present invention is owing to adopted above technical scheme, characteristics long-acting lastingly, that moisture sensitivity is little that resultant anti-static polyphenylacetylene combination has.
In order to realize second purpose, the present invention has adopted following technical scheme.A kind of preparation method of anti-static polyphenylacetylene combination comprises the steps:
1, takes by weighing polystyrene, Methylacrylic acid polyethylene glycol single armor ether, hydroxyethyl methylacrylate, coupling agent, Diisopropyl azodicarboxylate, sodium perchlorate by prescription;
2, above-mentioned Methylacrylic acid polyethylene glycol single armor ether, hydroxyethyl methylacrylate, Diisopropyl azodicarboxylate, sodium perchlorate were reacted 2～6 hours down at 60～90 ℃, pour out then, under 45～100 ℃ of conditions, dry by the fire some hrs, obtain antistatic material;
3, above-mentioned reaction gained antistatic material is mixed with polystyrene, coupling agent, antioxidant, antioxidant, toughener and toughner, under 55～65 ℃ condition mixing 30～50 minutes, feeding is extruded to forcing machine, the rotating speed of feeder is 450～550 rev/mins, the temperature of extruding is 180 ℃～210 ℃, the rotating speed of forcing machine is 550～650 rev/mins, makes anti-static polyphenylacetylene combination through cooling, drying again.
In order to realize the 3rd purpose, the present invention has adopted following technical scheme: a kind of anti-static polyphenylacetylene sheet material, make by 3 layer materials are compound, wherein the upper and lower are the above-mentioned anti-static polyphenylacetylene combination for preparing, its thickness accounts for 5%～20%% of total thickness respectively, the middle layer is a polystyrene, accounts for 60%～90% of gross weight.
The present invention has been owing to adopted above technical scheme, preparation-obtained anti-static polyphenylacetylene sheet material saved anti-static polyphenylacetylene combination usage quantity, reduce cost, the three layers of compound never drop-off in surface.Have characteristics long-acting lastingly, that moisture sensitivity is little, improved electronic product packing class and advance.
Embodiment
Embodiment 1
Methylacrylic acid polyethylene glycol single armor ether PEDMA 1 7.4%, hydroxyethyl methylacrylate HEMA4.96%, coupling agent kh-570 1.4%, Diisopropyl azodicarboxylate AIBN 0.12%, sodium perchlorate Na
+3.02%, HIPS polystyrene 73%, other 0.10% (other is mainly antioxidant, antiaging agent, toughener, toughner).
With Methylacrylic acid polyethylene glycol single armor ether PEDMA, hydroxyethyl methylacrylate HEMA, Diisopropyl azodicarboxylate AIBN, sodium perchlorate Na
+Reacted 2-6 hour down at 60-90 ℃ Deng material, pour out then, under 45-100 ℃ of condition, dry by the fire some hrs, obtain antistatic material.
Above-mentioned reaction gained antistatic material is mixed with polystyrene, antioxidant 1010, antioxidant 168, silane coupling agent KH-570, toughener and toughner, under 60 ℃ condition mixing 43 minutes, feeding is extruded to forcing machine, the rotating speed of feeder is 520 rev/mins, the temperature of extruding is 180 ℃～210 ℃, the rotating speed of forcing machine is 600 rev/mins, makes the anti-static plastic particle through cooling, pelletizing, drying again.
Above-mentioned anti-static plastic particle is extruded in three layers of forcing machine, and wherein the upper and lower are anti-static plastic, account for 15% of gross weight respectively, and the middle level adds polystyrene in addition, and 70%, the three layer of temperature extruded that accounts for gross weight is 160 ℃～210 ℃.
Above-mentioned extrudate is prolonged through three roll-ins, the temperature of the upper, middle and lower roller of three rollers is respectively 50 ℃, 60 ℃, 30 ℃, delay through three roll-ins, extrudate side cut, traction are made described polymeric antistatic polystyrene plastics sheet material, then with sheet material rolling, check, packing, warehouse-in.
Embodiment 2
The prescription of anti-static plastic is as follows:
Methylacrylic acid polyethylene glycol single armor ether PEDMA 16.04%, hydroxyethyl methylacrylate HEMA4.57%, coupling agent kh-570 1.4%, Diisopropyl azodicarboxylate AIBN 0.11%, sodium perchlorate Na
+2.78%, HIPS polystyrene 75%, other 0.10% (other is mainly antioxidant, antiaging agent, toughener, toughner).
The preparation method of polymeric antistatic polystyrene plastics sheet material is as embodiment 1.
Embodiment 3
The prescription of anti-static plastic is as follows:
Methylacrylic acid polyethylene glycol single armor ether PEDMA 18.76%, hydroxyethyl methylacrylate HEMA5.35%, coupling agent kh-570 1.4%, Diisopropyl azodicarboxylate AIBN 0.13%, sodium perchlorate Na
+3.26%, HIPS polystyrene 71%, other 0.10% (other shared 0.10% be antioxidant, antiaging agent, toughener, toughner).The silane coupling agent KH-570 that coupling agent adopts Nanjing Shuguang Chemical General Plant to produce, toughener and toughner adopt plastics toughener and toughner commonly used.
The preparation method of polymeric antistatic polystyrene plastics sheet material is as embodiment 1.
The test example
The product of getting present embodiment 1 carries out following characteristic measurement, and data are as follows:
| Sequence number | Test event | Reference standard | Test condition | The result | |
| 1. | Tensile strength | GB13022-91 | Speed: 50mm/min gauge length: 40mm | Vertically | 19.3MPa |
| Laterally | 19.6MPa | ||||
| 2. | Elongation at break | Vertically | 54％ | ||
| Laterally | 50％ | ||||
| 3. | Tensile yield strength | Vertically | 18.2MPa | ||
| Laterally | 19.6MPa | ||||
| 4. | Tear strength | GB/T16578-1996 | Thick: 0.93mm speed: 200mm/min | Vertically | 9.76N/mm maximum tear strength |
| Laterally | 15.9N/mm maximum tear strength | ||||
| 5. | Hardness | With reference to GB/T2411-80 | Thick: 2.80, the three stacked reading duration 15s that add | H D69 |
| 6. | Density | GB/T1033-86 method A | Dehydrated alcohol, 23.1 ℃ | 1.053g/cm 3 |
| 7. | Surface resistivity | ANSI/ESD STM11/11-2001 | Test environment: 23 ℃, 12%RH | 2.1×10 9Ω/aq |
| Test environment: 23 ℃, 50%RH | 7.2×10 9Ω/aq |
Claims (9)
1. anti-static polyphenylacetylene combination, it is characterized in that by weight percentage, said composition makes by the component that comprises following prescription is mixing: HIPS polystyrene 65.0～85.0%, Methylacrylic acid polyethylene glycol single armor ether ester 8.0～28.0%, hydroxyethyl methylacrylate 3.14～6.78%, sodium perchlorate 1.72～3.97%, Diisopropyl azodicarboxylate 0.0963～0.145%, coupling agent 0.92～2.4%.
2. a kind of anti-static polyphenylacetylene combination according to claim 1, it is characterized in that said composition makes by the component that comprises following prescription is mixing by weight percentage: HIPS polystyrene 70.0～80.0%, Methylacrylic acid polyethylene glycol single armor ether ester 16.0～20.0%, hydroxyethyl methylacrylate 4.0～6.0%, sodium perchlorate 2.0～3.5%, azobisisobutyronitrile 0.10～0.13%, coupling agent 1.0～2.0%.
3. a kind of anti-static polyphenylacetylene combination according to claim 1 and 2, it is characterized in that said composition also comprises other auxiliary agent of 0.05～0.18%, described other auxiliary agent is one or more in antioxidant, antiaging agent, toughener and the toughner.
4. a kind of anti-static polyphenylacetylene combination according to claim 1 and 2 is characterized in that coupling agent selects silane coupling agent KH-570 for use.
5. the preparation method of a kind of anti-static polyphenylacetylene combination according to claim 3 is characterized in that comprising the steps:
(1) takes by weighing polystyrene, Methylacrylic acid polyethylene glycol single armor ether, hydroxyethyl methylacrylate, coupling agent, Diisopropyl azodicarboxylate, sodium perchlorate by prescription;
(2) above-mentioned Methylacrylic acid polyethylene glycol single armor ether, hydroxyethyl methylacrylate, Diisopropyl azodicarboxylate, sodium perchlorate were reacted 2～6 hours down at 60～90 ℃, pour out then, under 45～100 ℃ of conditions, dry by the fire some hrs, obtain antistatic material;
(3) above-mentioned reaction gained antistatic material is mixed with in polystyrene, coupling agent, antioxidant, antioxidant, toughener and the toughner one or more, under 55～65 ℃ condition mixing 30～50 minutes, feeding is extruded to forcing machine, the rotating speed of feeder is 450～550 rev/mins, the temperature of extruding is 180 ℃～210 ℃, the rotating speed of forcing machine is 550～650 rev/mins, makes anti-static polyphenylacetylene combination through cooling, drying again.
6. anti-static polyphenylacetylene sheet material, make by 3 layer materials are compound, it is characterized in that wherein the upper and lower are the described anti-static polyphenylacetylene combination of claim 1, its thickness accounts for 5%～20%% of total thickness respectively, the middle layer is a polystyrene, accounts for 60%～90% of gross weight.
7. a kind of anti-static polyphenylacetylene sheet material according to claim 6, it is characterized in that by weight percentage, anti-static polyphenylacetylene group composition makes by the component that comprises following prescription is mixing: HIPS polystyrene 65～80%, Methylacrylic acid polyethylene glycol single armor ether ester 10～20%, hydroxyethyl methylacrylate 4.0～6.0%, sodium perchlorate 2.0～3.5%, azobisisobutyronitrile 0.10～0.13%, coupling agent 1.0～2.0%.
8. a kind of anti-static polyphenylacetylene sheet material according to claim 6, it is characterized in that anti-static polyphenylacetylene group composition also comprises other auxiliary agent of 0.05～0.18%, described other auxiliary agent is one or more in antioxidant, antiaging agent, toughener and the toughner.
9. a kind of anti-static polyphenylacetylene sheet material according to claim 6 is characterized in that coupling agent selects silane coupling agent KH-570 for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101563032A CN101157781B (en) | 2007-10-19 | 2007-10-19 | Anti-static polyphenylacetylene combination and preparation method and sheet material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101563032A CN101157781B (en) | 2007-10-19 | 2007-10-19 | Anti-static polyphenylacetylene combination and preparation method and sheet material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101157781A true CN101157781A (en) | 2008-04-09 |
| CN101157781B CN101157781B (en) | 2010-12-08 |
Family
ID=39306027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101563032A Active CN101157781B (en) | 2007-10-19 | 2007-10-19 | Anti-static polyphenylacetylene combination and preparation method and sheet material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101157781B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051156A (en) * | 2010-05-21 | 2011-05-11 | 东阳市聚科新材料有限公司 | High-temperature resistant poly(ester-ether) polymer antistatic agent and preparation method and application of poly(ester-ether) polymer antistatic agent |
| CN102619324A (en) * | 2012-04-06 | 2012-08-01 | 上海加富橡胶制品有限公司 | Antistatic rubber floor |
| CN102673067A (en) * | 2012-04-17 | 2012-09-19 | 芜湖市弘瑞包装制品有限公司 | High-strength plastic composite sheet for food cup and preparation method thereof |
| CN103897320A (en) * | 2014-03-13 | 2014-07-02 | 江苏康非特动力科技有限公司 | High-strength cold-resistant toughening polystyrene composite material and preparation method thereof |
| CN104011164A (en) * | 2011-12-21 | 2014-08-27 | 理研维生素株式会社 | Kneadable antistatic agent, thermoplastic resin composition containing same, and molded article |
| CN105968601A (en) * | 2016-05-13 | 2016-09-28 | 金宝丽科技（苏州）有限公司 | Environment-friendly polystyrene sheet with low thermal conductivity and preparation method thereof |
| CN107286492A (en) * | 2017-06-28 | 2017-10-24 | 常州欣彬纺织品有限公司 | A kind of antistatic film and preparation method thereof |
| CN109867873A (en) * | 2018-12-29 | 2019-06-11 | 昆山恒光塑胶股份有限公司 | A kind of Low-cost electric subpack plastic uptake sheet manufacturing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7052539B2 (en) * | 2003-01-16 | 2006-05-30 | Daicel Polymer, Ltd. | Surface-treating agents, anti-fogging sheets, and trays using thereof |
| CN100439094C (en) * | 2005-08-09 | 2008-12-03 | 浙江三和塑料有限公司 | Black-less permanent antielectro-static plastic sheet and its preparation method |
-
2007
- 2007-10-19 CN CN2007101563032A patent/CN101157781B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051156A (en) * | 2010-05-21 | 2011-05-11 | 东阳市聚科新材料有限公司 | High-temperature resistant poly(ester-ether) polymer antistatic agent and preparation method and application of poly(ester-ether) polymer antistatic agent |
| CN102051156B (en) * | 2010-05-21 | 2012-12-19 | 东阳市聚科新材料有限公司 | High-temperature resistant poly(ester-ether) polymer antistatic agent and preparation method and application of poly(ester-ether) polymer antistatic agent |
| CN104011164A (en) * | 2011-12-21 | 2014-08-27 | 理研维生素株式会社 | Kneadable antistatic agent, thermoplastic resin composition containing same, and molded article |
| CN102619324A (en) * | 2012-04-06 | 2012-08-01 | 上海加富橡胶制品有限公司 | Antistatic rubber floor |
| CN102673067A (en) * | 2012-04-17 | 2012-09-19 | 芜湖市弘瑞包装制品有限公司 | High-strength plastic composite sheet for food cup and preparation method thereof |
| CN102673067B (en) * | 2012-04-17 | 2015-01-28 | 芜湖市弘瑞包装制品有限公司 | High-strength plastic composite sheet for food cup and preparation method thereof |
| CN103897320A (en) * | 2014-03-13 | 2014-07-02 | 江苏康非特动力科技有限公司 | High-strength cold-resistant toughening polystyrene composite material and preparation method thereof |
| CN105968601A (en) * | 2016-05-13 | 2016-09-28 | 金宝丽科技（苏州）有限公司 | Environment-friendly polystyrene sheet with low thermal conductivity and preparation method thereof |
| CN107286492A (en) * | 2017-06-28 | 2017-10-24 | 常州欣彬纺织品有限公司 | A kind of antistatic film and preparation method thereof |
| CN109867873A (en) * | 2018-12-29 | 2019-06-11 | 昆山恒光塑胶股份有限公司 | A kind of Low-cost electric subpack plastic uptake sheet manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101157781B (en) | 2010-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101157781A (en) | Anti-static polyphenylacetylene combination and preparation method and sheet material | |
| CN102061050A (en) | All-weather persistent antistatic master batch capable of being subjected to thermoplastic processing and antistatic composite material | |
| CN101743262A (en) | thermoplastic polyurethane with antistatic properties | |
| CN104250393B (en) | A kind of permanent anti-static modified polypropylene material and preparation method thereof | |
| CN101481483A (en) | Antistatic teflon film and preparation thereof | |
| CN103042796B (en) | Antistatic polyethylene film and preparation method thereof | |
| CN101475721A (en) | Antistatic plastic for SMT carrier band, and preparation and use thereof | |
| CN105315538A (en) | Regenerated polyethylene-graphene composite conducting material and preparation method thereof | |
| CN101967274A (en) | Permanent antistatic polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) composite material and preparation method thereof | |
| CN107345031A (en) | A kind of antistatic enhancing PP/ABS alloy materials and preparation method thereof | |
| CN102399393A (en) | A kind of permanent antistatic PP composite material and preparation method thereof | |
| CN101343388B (en) | Mining Polyethylene Pipe Composition | |
| CN105482260A (en) | BOPP (biaxially-oriented polypropylene) bag making film for high and cold area and preparation method of BOPP bag making film | |
| CN102993458A (en) | Antistatic agent composite containing glycerin monostearate and preparation method thereof | |
| CN114634601B (en) | Polymer permanent antistatic agent and preparation method and application thereof | |
| CN111073204A (en) | Antistatic polypropylene composite material capable of being used in explosion-proof environment and preparation method thereof | |
| CN100439094C (en) | Black-less permanent antielectro-static plastic sheet and its preparation method | |
| CN107868257B (en) | Semi-aromatic nylon-long-chain aliphatic nylon compound and preparation method thereof, nylon composite material and preparation method and application thereof | |
| CN102453274B (en) | Viscosity reducing master batch for polyolefin and preparation method and application thereof | |
| KR100330200B1 (en) | Composite plastics and manufacturing method of the same | |
| CN111057362B (en) | Low-dielectric-constant modified plastic for 5G mobile phone printed circuit board | |
| CN104448723B (en) | A kind of antistatic biodegradable films and preparation method thereof | |
| CN100360599C (en) | PVC antistatic elasticizer synthesis process | |
| CN100572414C (en) | Antistatic polyurethane resin, its coating and its manufacturing method | |
| CN114456497A (en) | Preparation method of antistatic high-strength PP material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Antistatic polystyrene composition, preparation method and sheet material thereof Effective date of registration: 20200904 Granted publication date: 20101208 Pledgee: Yiwu Branch of Guangfa Bank Co., Ltd Pledgor: ZHEJIANG SANHE PLASTICS Co.,Ltd. Registration number: Y2020330000666 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210714 Granted publication date: 20101208 Pledgee: Yiwu Branch of Guangfa Bank Co., Ltd Pledgor: ZHEJIANG SANHE PLASTICS Co.,Ltd. Registration number: Y2020330000666 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Antistatic polystyrene composition, preparation method and sheet Effective date of registration: 20210729 Granted publication date: 20101208 Pledgee: Yiwu Branch of Guangfa Bank Co., Ltd Pledgor: ZHEJIANG SANHE PLASTICS Co.,Ltd. Registration number: Y2021330000999 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211118 Granted publication date: 20101208 Pledgee: Yiwu Branch of Guangfa Bank Co., Ltd Pledgor: ZHEJIANG SANHE PLASTICS CO.,LTD. Registration number: Y2021330000999 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |