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GB1447825A - Manufacture of flexible thermoplastic foams - Google Patents

Manufacture of flexible thermoplastic foams

Info

Publication number
GB1447825A
GB1447825A GB92474A GB92474A GB1447825A GB 1447825 A GB1447825 A GB 1447825A GB 92474 A GB92474 A GB 92474A GB 92474 A GB92474 A GB 92474A GB 1447825 A GB1447825 A GB 1447825A
Authority
GB
United Kingdom
Prior art keywords
ethylene
mixture
peroxide
jan
press
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.)
Expired
Application number
GB92474A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of GB1447825A publication Critical patent/GB1447825A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

1447825 Foamed ethylene chlorinated ethylene polymers BASF AG 9 Jan 1974 [10 Jan 1973] 00924/74 Heading C3C Flexible foams are made by heating an expandable mixture comprising a thermoplastic ethylene polymer having an X-ray crystallinity at 25‹ C. of more than 20% by wt., and/or a chlorinated polyethylene having a chlorine content of 10 to 45% by wt., an organic peroxide as cross-linking agent and an expanding agent in a confined gas-tight zone in which there is initially no gas space to an elevated temperature at which the polymer has softened and the expanding agent and the peroxide are decomposed and prior to releasing the excess pressure which was generated in the zone cooling the outer surface of the expandable mixture to such an extent so as to produce a temperature difference of 10- 100‹ C. between the maximum temperature within the expandable mixture and its outer surface. In the examples mixtures of polyethylene, an ethylene/n-butyl acrylate or propylene copolymer, or chlorinated polyethylene; 1,3 - bis - (t - butylperoxyisopropyl)benzene or dicumyl peroxide and azodicarbonamide; and talc, zinc stearate, lead stearate, lead sulphate, cadmium sulphide, and/or triallyl cyanurate are made in the form of crepes or granules which are then used to fill a hole in a press which is closed under pressure, the mixture is heated, the press is then cooled (with cooling water) before releasing the pressure and thereby form a foam. The foams may be used as interior trim for cars, inserts in life jackets and for upholstery.
GB92474A 1973-01-10 1974-01-09 Manufacture of flexible thermoplastic foams Expired GB1447825A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732300965 DE2300965A1 (en) 1973-01-10 1973-01-10 METHOD FOR PRODUCING FLEXIBLE THERMOPLASTIC FOAM PLASTICS

Publications (1)

Publication Number Publication Date
GB1447825A true GB1447825A (en) 1976-09-02

Family

ID=5868633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB92474A Expired GB1447825A (en) 1973-01-10 1974-01-09 Manufacture of flexible thermoplastic foams

Country Status (7)

Country Link
JP (1) JPS49104968A (en)
BE (1) BE809493A (en)
DE (1) DE2300965A1 (en)
FR (1) FR2213154B3 (en)
GB (1) GB1447825A (en)
IT (1) IT1002016B (en)
NL (1) NL7400252A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111658A (en) * 1980-02-08 1981-09-03 Toyo Rubber Chem Ind Co Ltd Preparation of low density rubber foamy body
JPS5721435A (en) * 1980-07-15 1982-02-04 Toyo Rubber Chem Ind Co Ltd Production of low-shrinkage rubber foam
US5160465A (en) * 1989-02-13 1992-11-03 Exxon Chemical Patents Inc. Process of insulating a body cavity
US5212208A (en) * 1989-02-13 1993-05-18 Exxon Chemical Patents Inc. Process of insulating a body cavity

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5416572A (en) * 1977-07-07 1979-02-07 Hekisa Chem:Kk Crosslinked polyolefin foam
JPS5538849A (en) * 1978-09-12 1980-03-18 Osaka Soda Co Ltd Composition for chlorinated polyethylene-based crosslinked foam

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56111658A (en) * 1980-02-08 1981-09-03 Toyo Rubber Chem Ind Co Ltd Preparation of low density rubber foamy body
JPS629254B2 (en) * 1980-02-08 1987-02-27 Toyo Rubber Chemical Ind Co
JPS5721435A (en) * 1980-07-15 1982-02-04 Toyo Rubber Chem Ind Co Ltd Production of low-shrinkage rubber foam
JPH032656B2 (en) * 1980-07-15 1991-01-16 Toyo Rubber Chemical Ind Co
US5160465A (en) * 1989-02-13 1992-11-03 Exxon Chemical Patents Inc. Process of insulating a body cavity
US5212208A (en) * 1989-02-13 1993-05-18 Exxon Chemical Patents Inc. Process of insulating a body cavity

Also Published As

Publication number Publication date
JPS49104968A (en) 1974-10-04
DE2300965A1 (en) 1974-07-11
NL7400252A (en) 1974-07-12
IT1002016B (en) 1976-05-20
FR2213154B3 (en) 1976-10-15
FR2213154A1 (en) 1974-08-02
BE809493A (en) 1974-07-08

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee