GB1026796A - Expanded thermoplastic resinous materials - Google Patents

Expanded thermoplastic resinous materials

Info

Publication number
GB1026796A
GB1026796A GB83264A GB83264A GB1026796A GB 1026796 A GB1026796 A GB 1026796A GB 83264 A GB83264 A GB 83264A GB 83264 A GB83264 A GB 83264A GB 1026796 A GB1026796 A GB 1026796A
Authority
GB
United Kingdom
Prior art keywords
polymers
expanded
copolymers
mixture
atmosphere
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
GB83264A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB1026796A publication Critical patent/GB1026796A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/12—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 physical blowing agent
    • C08J9/14—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 physical blowing agent organic
    • C08J9/143—Halogen containing compounds

Landscapes

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

Abstract

An expanded closed-cell thermoplastic resinous material is made by mixing the thermoplastic resin with a volatile blowing agent, which has a vapour transmission rate through the thermoplastic resin from 0.75 to 6.0 times the transmission rate of the atmosphere into which the mixture is expanded, then expanding the mixture at a heat plastifying temperature and cooling the expanded closed-cell mass. In order to promote the vapour transmission between the expanding agent and the surrounding atmosphere, the expanded material may be retained in the atmosphere at an elevated temperature for a period of time. A mixture of methyl chloride and dichlorofluoromethane containing from 40 to 60% of methyl chloride is specified as a blowing agent. Aliphatic hydrocarbons and perchlorofluorocarbons can also be used as blowing agents. Polymers specified include polymers and copolymers of styrene and substituted styrenes, polymers and copolymers of methyl methacrylate, polymers and copolymers of vinylidene chloride, thermoplastic ester and ether derivatives of cellulose and chlorinated polyolefins.
GB83264A 1963-01-16 1964-01-08 Expanded thermoplastic resinous materials Expired GB1026796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25176563A 1963-01-16 1963-01-16

Publications (1)

Publication Number Publication Date
GB1026796A true GB1026796A (en) 1966-04-20

Family

ID=22953311

Family Applications (1)

Application Number Title Priority Date Filing Date
GB83264A Expired GB1026796A (en) 1963-01-16 1964-01-08 Expanded thermoplastic resinous materials

Country Status (4)

Country Link
BE (1) BE642533A (en)
DE (1) DE1544753C2 (en)
GB (1) GB1026796A (en)
NL (1) NL143957B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3770668A (en) * 1970-10-29 1973-11-06 Dow Chemical Co Styrene polymer foam and the preparation thereof
AU476282B2 (en) * 1972-08-17 1975-07-17 Dow Chemical Company, The Cushioning and materials therefor
NL179914C (en) * 1975-11-04 1986-12-01 Dow Chemical Co METHOD FOR MANUFACTURING A FOAM ARTICLE FROM A THERMOPLASTIC ALKENYL AROMATIC RESIN BY EXTRUSION.
US7962442B2 (en) * 2006-08-31 2011-06-14 International Business Machines Corporation Managing execution of a query against selected data partitions of a partitioned database

Also Published As

Publication number Publication date
NL6400231A (en) 1964-07-17
DE1544753C2 (en) 1981-04-23
DE1544753A1 (en) 1969-06-26
NL143957B (en) 1974-11-15
DE1544753B2 (en) 1971-01-28
BE642533A (en) 1964-07-15

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