CN101507826A - Preparation method of medical quick imbibition foam material - Google Patents
Preparation method of medical quick imbibition foam material Download PDFInfo
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- CN101507826A CN101507826A CNA2009100666793A CN200910066679A CN101507826A CN 101507826 A CN101507826 A CN 101507826A CN A2009100666793 A CNA2009100666793 A CN A2009100666793A CN 200910066679 A CN200910066679 A CN 200910066679A CN 101507826 A CN101507826 A CN 101507826A
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- Prior art keywords
- liquid
- absorbing
- acid
- foam material
- polyvinyl alcohol
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Links
- 239000006261 foam material Substances 0.000 title claims abstract description 11
- 238000005213 imbibition Methods 0.000 title description 12
- 238000002360 preparation method Methods 0.000 title description 10
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 7
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract 4
- 239000011148 porous material Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000006136 alcoholysis reaction Methods 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 229920002261 Corn starch Polymers 0.000 claims description 5
- 239000004094 surface-active agent Substances 0.000 claims description 5
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 229920001214 Polysorbate 60 Polymers 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- 239000008120 corn starch Substances 0.000 claims description 4
- 229920002866 paraformaldehyde Polymers 0.000 claims description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical group O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 3
- 229920000053 polysorbate 80 Polymers 0.000 claims description 3
- 229920001592 potato starch Polymers 0.000 claims description 3
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 239000002736 nonionic surfactant Substances 0.000 claims description 2
- 239000003945 anionic surfactant Substances 0.000 claims 1
- 239000000244 polyoxyethylene sorbitan monooleate Substances 0.000 claims 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims 1
- 235000010483 polyoxyethylene sorbitan monopalmitate Nutrition 0.000 claims 1
- 239000000249 polyoxyethylene sorbitan monopalmitate Substances 0.000 claims 1
- 239000001818 polyoxyethylene sorbitan monostearate Substances 0.000 claims 1
- 235000010989 polyoxyethylene sorbitan monostearate Nutrition 0.000 claims 1
- KZOJQMWTKJDSQJ-UHFFFAOYSA-M sodium;2,3-dibutylnaphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(S([O-])(=O)=O)=C(CCCC)C(CCCC)=CC2=C1 KZOJQMWTKJDSQJ-UHFFFAOYSA-M 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 25
- 239000012153 distilled water Substances 0.000 abstract description 6
- 238000001035 drying Methods 0.000 abstract description 6
- 210000002700 urine Anatomy 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 6
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000005187 foaming Methods 0.000 abstract description 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 229920000742 Cotton Polymers 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000002504 physiological saline solution Substances 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000006260 foam Substances 0.000 description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 239000001117 sulphuric acid Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000002439 hemostatic effect Effects 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012567 medical material Substances 0.000 description 2
- 238000002406 microsurgery Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- LWEAHXKXKDCSIE-UHFFFAOYSA-M 2,3-di(propan-2-yl)naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S([O-])(=O)=O)=C(C(C)C)C(C(C)C)=CC2=C1 LWEAHXKXKDCSIE-UHFFFAOYSA-M 0.000 description 1
- 240000001624 Espostoa lanata Species 0.000 description 1
- 235000009161 Espostoa lanata Nutrition 0.000 description 1
- 244000017020 Ipomoea batatas Species 0.000 description 1
- 235000002678 Ipomoea batatas Nutrition 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 description 1
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- 229920001219 Polysorbate 40 Polymers 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229940030225 antihemorrhagics Drugs 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 210000000416 exudates and transudate Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000025 haemostatic effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- JHJUUEHSAZXEEO-UHFFFAOYSA-M sodium;4-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 JHJUUEHSAZXEEO-UHFFFAOYSA-M 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Materials For Medical Uses (AREA)
Abstract
The invention relates to a method for preparing a medical quick liquid-absorbing foam material. The method comprises the steps of well mixing polyvinyl alcohol aqueous solution, aldehyde and a pore-forming agent, adding acid to the mixture, continuing to stir the mixture, pouring the mixed solution into a die, curing and molding the mixed solution, washing and drying the obtained product and obtaining a target object. The material has abundant mutually communicated opening structures through a method of using mechanical foaming together with the pore-forming agent. The prepared material is good in biological compatibility and excellent in hydrophilcity, has the liquid-absorbing capability much higher than common cotton yarn and paper, has the capability of quickly absorbing a large amount of distilled water, physiological saline and urine, turns into soft tenacious elastic sponge after absorbing liquid, is resistant to heat and ultraviolet radiation, and can be disinfected in a plurality of ways. The prepared material is a rigid foam material in a dry state, is a spongy material in a wet state, has the apparent density of between 0.04 and 0.09 g/cm<3> and the liquid-absorbing ratio of between 1,800 and 2,800 percent, and can be applied to medical operations.
Description
Technical field
The invention belongs to the medical macromolecular materials field, relate to a kind of preparation method of medical quick imbibition foam material.
Background technology
As medical material, no matter as Wound dressing, still, in operation process, all need in time to sop up the liquid that oozes out as cave type wound implant, and hemostasis in time, it is also unsatisfactory to use traditional medical material (as gauze, cotton balls etc.) at present.
The structure of foam class dressing has porous; liquid had bigger absorptive capacity; can see through oxygen and carbon dioxide; material is controlled by steam transhipment and mechanism of absorption the processing of Wound exudate; wound is had good protective action, and what this type of dressing use was maximum at present is polyurethane and polyvinyl alcohol foam.
Chinese patent CN1741824 discloses polyurethane foam dressing and the manufacture method thereof that is used for the wound implant, and this material has 5-20 absorbance doubly, the juice of can the fast Absorption wound discharging.The shortcoming of this material is not have certain volumetric expansion ability after absorbing liquid, can not give wound with certain pressure, thereby can not play the effect of quick-acting haemostatic powder, and this material preparation process complexity also makes its large-scale production and application be restricted in addition.
Chinese patent CN1095387 and the disclosed polyvinyl alcohol foam material of Chinese patent CN1557872 are raw material with polyvinyl alcohol and formaldehyde, prepare under acid catalysis.But owing to adopting sodium bicarbonate or magnesium metal, aluminum, zinc powder is foaming agent, react too violent, so foaming process is restive, and foam structure is inhomogeneous, influences its imbibition effect, and this patent is not reported the result of rate of liquid aspiration.
Summary of the invention
In order to solve the problem of prior art, the invention provides that a kind of preparation technology is simple, the preparation method of medical quick imbibition foam material with low cost.Contain abundant hydroxyl in the described medical quick imbibition foam material, so have excellent hydrophilic; Simultaneously, the present invention adopts the method that machinery is got blisters and pore former cooperatively interacts to give the open-celled structure of the abundant mutual perforation of described foamed materials, makes it have imbibition ability fast.Medical quick imbibition foam material of the present invention is the polyvinyl alcohol foam material, this material all has a large amount of and the ability of fast Absorption to distilled water, normal saline, urine, can be applied to surgical operation liner, department of otorhinolaryngology and other microsurgery fields such as hemostatic material, Medical dressing of sucking blood.
To achieve the above object of the invention, the present invention is to be primary raw material with the polyethylene alcohols and aldehydes, is that adjuvant prepares the porous foamed materials with acid, surfactant, pore former.
The technical solution used in the present invention may further comprise the steps:
Is the mass percent proportioning 4-8% polyvinyl alcohol, 65-75% water, 1-4% aldehyde, 1-2% surfactant and 1-2% pore former are mixed into uniform liquid, this liquid is poured in the agitator, stirred 10-30 minute, adding the mass percent proportioning again is 15-25% acid, continue to stir 20-40 minute, aforesaid liquid is poured in the acidproof mould, at 30-60 ℃ of solidifying and setting 4-40 hour, washing, drying obtains target product;
Described polyvinyl alcohol alcoholysis degree is greater than 88%, and the degree of polymerization is 1500-2000;
Described aldehyde is formaldehyde, paraformaldehyde or their mixture;
Described acid is sulphuric acid or phosphoric acid;
Described surfactant is anionic, dodecyl sodium sulfate or nekal; Perhaps be one or more of non-ionic surfactant polyoxyethylene sorbitan mono-laurate, polyoxyethylene 20 sorbitan monopalmitate, polyoxyethylene 20 sorbitan monostearate and polyoxyethylene 20 sorbitan monooleate;
Described pore former is potato starch or corn starch.
Beneficial effect: the present invention adopts the method that machinery is got blisters and pore former cooperatively interacts to give the open-celled structure of the abundant mutual perforation of material, and preparation technology is simple, and process is controlled easily.
The medical quick imbibition material of the inventive method preparation has extremely good imbibition ability, and outstanding feature is all to have quick and a large amount of absorbability for distilled water, normal saline, urine.Have during hygrometric state and the no adhesion of tissue, soft characteristics such as no fibre shedding both can be used as the wound clean material and tough, absorbed wound sepage, pus and blood, also can be used as dressing, kept the wound circumference moist environment, promoted the healing of wound.
The preparation the foamed materials dry state time be hard foam, be softish spongy material during hygrometric state.Measurement result from table 1 to table 4 shows: this foamed materials is apparent density 0.04-0.09g/cm
3, imbibition (distilled water, normal saline, urine) rate is up to 1800-2800%, at most only need 125 seconds when vertical suction range reaches 50mm, makes this material can be used as good medical grade drain material.
Utilize the medical quick imbibition material of the inventive method preparation to have excellent biological compatibility, to skin nonirritant and sensitization, can be applicable to Medical dressing, surgical operation liner, department of otorhinolaryngology and other microsurgery fields such as hemostatic material of sucking blood, have wide medical application prospect.
The specific embodiment
Embodiment 1
Batch mixes: the polyvinyl alcohol of 65 the gram degree of polymerization 1700, alcoholysis degrees 98% are dissolved in and are made into mass percent in the 950 gram hot water is 5% solution, add 10 gram sodium lauryl sulphates, 5 gram nekals, paraformaldehyde 30 grams, corn starch 30 grams, mix homogeneously is poured in the agitator, stirs 10 minutes; Adding mass percent again is 350 milliliters in 50% sulphuric acid, continues to stir 40 minutes.Pour aforesaid liquid into acidproof mould, put into calorstat, 40 hours curing moldings of 30 ℃ of reactions, washing, drying obtains target product.
Physical property and method of testing:
Pick up: the initial weight (A) of measuring the foamed materials with a certain size afterwards, foam sample was soaked 10 minutes in distilled water, normal saline, urine respectively, be placed on the water on drainage screen last 30 second of scumming surface, and weigh (B), the pick up of foamed materials is calculated with following formula: pick up (%)=(B-A)/A * 100%.This process repeats 3 times, and the mean value calculation of 3 measured values is as pick up.
Vertical rate of liquid aspiration: vertical absorbent is that a kind of showing can be with the standard of measurement of the ability of the direction fluid transfer opposite with gravity.Foam sample with 2cm * 20cm * 0.3cm size vertically immerses in distilled water, normal saline, the urine respectively, picks up counting, and the working sample liquid draw is to the time that the time is spent apart from liquid level 50mm height.This process repeats 3 times, and the mean value calculation of 3 measured values is as vertical rate of liquid aspiration.
Test result is as shown in table 1
Embodiment 2
Batch mixes: the polyvinyl alcohol of 100 the gram degree of polymerization 1500, alcoholysis degrees 98% are dissolved in and are made into mass percent in the 900 gram hot water is 10% solution, add 10 gram polyoxyethylene 20 sorbitan monolaurates, 10 gram dodecylbenzene sodium sulfonate, 65 milliliters of formalins, adding 25 KEMA bell sweet potato starch, mix homogeneously is poured in the agitator, stirs 20 minutes; Adding mass percent again is 500 milliliters in 50% sulphuric acid, continues to stir 20 minutes.Pour aforesaid liquid into acidproof mould, put into calorstat, 24 hours curing moldings of 40 ℃ of reactions, washing, drying obtains target product.
Physical property and method of testing: with embodiment 1
Test result is as shown in table 2:
Embodiment 3
Batch mixes: the polyvinyl alcohol of 300 the gram degree of polymerization 2000, alcoholysis degrees 88% are dissolved in and are made into mass percent in the 2200 gram hot water is 12% solution, add 70 gram polyoxyethylene sorbitan list palm fibre eleostearates, 100 milliliters of formalins, paraformaldehyde 15 grams, 85 gram corn starchs, mix homogeneously is poured in the agitator, stirred 25 minutes: adding mass percent again is 150 milliliters of 45% phosphatase 11s, continue to stir 25 minutes: pour aforesaid liquid into acidproof mould, put into calorstat, 10 hours curing moldings of 50 ℃ of reactions, washing, drying obtains target product.
Physical property and method of testing: with embodiment 1
Test result is as shown in table 3:
Embodiment 4
Batch mixes: the polyvinyl alcohol of the 100 gram degree of polymerization 1700, alcoholysis degree 95% is dissolved in the solution that is made into mass percent 12% in the 733 gram hot water, add 15 gram polyoxyethylene 20 sorbitan monostearates, 5 gram polyoxyethylene 20 sorbitan monooleates, formalin 60ml, corn starch 35 grams, mix homogeneously is poured in the agitator, stirs 30 minutes; Adding mass percent again is 600 milliliters in 50% sulphuric acid, continues to stir 20 minutes.Pour aforesaid liquid into acidproof mould, put into calorstat, 4 hours curing moldings of 60 ℃ of reactions, washing, drying obtains target product.
Physical property and method of testing: with embodiment 1
Test result is as shown in table 4
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100666793A CN101507826B (en) | 2009-03-24 | 2009-03-24 | Preparation method of medical quick imbibition foam material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100666793A CN101507826B (en) | 2009-03-24 | 2009-03-24 | Preparation method of medical quick imbibition foam material |
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| Publication Number | Publication Date |
|---|---|
| CN101507826A true CN101507826A (en) | 2009-08-19 |
| CN101507826B CN101507826B (en) | 2012-11-14 |
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| CN2009100666793A Active CN101507826B (en) | 2009-03-24 | 2009-03-24 | Preparation method of medical quick imbibition foam material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103709276A (en) * | 2014-01-22 | 2014-04-09 | 中国科学院长春应用化学研究所 | Super absorbent resin and preparation method thereof |
| CN105343971A (en) * | 2009-12-22 | 2016-02-24 | 费雪派克医疗保健有限公司 | Components for medical circuits |
| CN105999365A (en) * | 2016-07-26 | 2016-10-12 | 四川艾医生医疗科技有限公司 | Functional nasal cavity hemostatic material and preparation method thereof |
| CN106215227A (en) * | 2016-07-26 | 2016-12-14 | 四川艾医生医疗科技有限公司 | A kind of effect type nose cavity hemostatic material of improvement and preparation method thereof |
| CN108066811A (en) * | 2017-12-29 | 2018-05-25 | 广州润虹医药科技股份有限公司 | A kind of medical compound hemostatic sponge of negative pressure drainage and preparation method thereof |
| CN108836623A (en) * | 2018-06-29 | 2018-11-20 | 惠州华阳医疗器械有限公司 | A kind of medical ball-type sponge eye brush and preparation method thereof |
| CN108976681A (en) * | 2018-08-08 | 2018-12-11 | 中国科学院长春应用化学研究所 | A kind of polyvinyl alcohol based foamed material and preparation method thereof |
| CN113855845A (en) * | 2021-09-28 | 2021-12-31 | 四川大学 | Modified chitosan porous gel hemostatic gauze with hydrophilic surface and preparation method thereof |
| CN115028949A (en) * | 2021-12-07 | 2022-09-09 | 广安职业技术学院 | Light polyvinyl formal foam material with high water absorption rate |
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| US4098728A (en) * | 1976-01-02 | 1978-07-04 | Solomon Rosenblatt | Medical surgical sponge and method of making same |
| CN1095075A (en) * | 1994-04-28 | 1994-11-16 | 上海华一经济科技实业公司 | High water absorbency plastic foam and preparation method |
| CN1043047C (en) * | 1994-05-09 | 1999-04-21 | 朱铁桥 | Polyvinyl alcohol foam material for medical sanitation |
| CN1129751A (en) * | 1994-09-30 | 1996-08-28 | 林模相 | Manufacture of polyvinyl acetal colloid cotton |
| CN1263799C (en) * | 2003-08-18 | 2006-07-12 | 山西大学 | Water absorbing collodion and its making process |
| CN1218997C (en) * | 2004-02-04 | 2005-09-14 | 安徽大维新材有限责任公司 | Highly absorbent polyvinyl alcohol foam and process for preparing same |
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| CN103709276B (en) * | 2014-01-22 | 2016-06-01 | 中国科学院长春应用化学研究所 | A kind of High hydrophilous resin and its preparation method |
| CN103709276A (en) * | 2014-01-22 | 2014-04-09 | 中国科学院长春应用化学研究所 | Super absorbent resin and preparation method thereof |
| CN105999365B (en) * | 2016-07-26 | 2019-05-03 | 四川艾医生医疗科技有限公司 | A kind of effect type nose cavity hemostatic material and preparation method thereof |
| CN106215227A (en) * | 2016-07-26 | 2016-12-14 | 四川艾医生医疗科技有限公司 | A kind of effect type nose cavity hemostatic material of improvement and preparation method thereof |
| CN105999365A (en) * | 2016-07-26 | 2016-10-12 | 四川艾医生医疗科技有限公司 | Functional nasal cavity hemostatic material and preparation method thereof |
| CN108066811A (en) * | 2017-12-29 | 2018-05-25 | 广州润虹医药科技股份有限公司 | A kind of medical compound hemostatic sponge of negative pressure drainage and preparation method thereof |
| CN108836623A (en) * | 2018-06-29 | 2018-11-20 | 惠州华阳医疗器械有限公司 | A kind of medical ball-type sponge eye brush and preparation method thereof |
| CN108836623B (en) * | 2018-06-29 | 2024-03-19 | 惠州华阳医疗器械有限公司 | Medical spherical sponge eye brush and preparation method thereof |
| CN108976681A (en) * | 2018-08-08 | 2018-12-11 | 中国科学院长春应用化学研究所 | A kind of polyvinyl alcohol based foamed material and preparation method thereof |
| CN113855845A (en) * | 2021-09-28 | 2021-12-31 | 四川大学 | Modified chitosan porous gel hemostatic gauze with hydrophilic surface and preparation method thereof |
| CN113855845B (en) * | 2021-09-28 | 2022-11-01 | 四川大学 | Surface hydrophilic modified chitosan porous gel hemostatic gauze and preparation method thereof |
| CN115028949A (en) * | 2021-12-07 | 2022-09-09 | 广安职业技术学院 | Light polyvinyl formal foam material with high water absorption rate |
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| Publication number | Publication date |
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| CN101507826B (en) | 2012-11-14 |
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