GB1335973A - Foamed materials and their preparation - Google Patents

Foamed materials and their preparation

Info

Publication number
GB1335973A
GB1335973A GB1335973DA GB1335973A GB 1335973 A GB1335973 A GB 1335973A GB 1335973D A GB1335973D A GB 1335973DA GB 1335973 A GB1335973 A GB 1335973A
Authority
GB
United Kingdom
Prior art keywords
weight
resin
pyran
parts
preferred
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
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.)
Ciba Geigy UK Ltd
Original Assignee
Ciba Geigy UK Ltd
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 Ciba Geigy UK Ltd filed Critical Ciba Geigy UK Ltd
Publication of GB1335973A publication Critical patent/GB1335973A/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
    • C08J9/141—Hydrocarbons
    • 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
    • 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
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers

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)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

1335973 Foamed phenol-formaldehyde resins; polymers of pyran and furan derivatives CIBAGEIGY (UK) Ltd 12 Jan 1971 [6 Feb 1970 10 Sept 1970] 5946/70 and 43399/70 Headings C3C and C3P Synthetic resin foams containing phenolformaldehyde resins are made by adding between 0À5 and 15 parts of a liquid which is polymerizable exothermally on addition of strong acid (having a pka# 2À2) to 100 parts by weight of a phenol-formaldehyde resin. Between 5 and 30 parts by weight of a physical blowing agent are added and the mixture is treated with one or more strong acids which cure the resin and polymerize the liquid, thus liberating heat and so causing the blowing agent to vaporize and foam the mixture. The preferred liquids are oxygen-containing heterocycles, in particular pyran and furan derivatives, furfuryl alcohol and (2,3-dihydro- 4H-pyran-2-yl)methyl, 2,3-dihydro-4H-pyran- 2-carboxylate being mentioned. The preferred blowing agents are organic liquids having boiling points between 30 and 100‹ C. and are water-immiscible. The preferred acids have a strength such that pka is 2À2 or less and are used to an extent of 10 to 40% of the weight of the resin. 0-5 to 5% by weight of resorcinol, based on the weight of the resin, may be added, and so may 0À1 to 5% of an emulsifying agent.
GB1335973D 1970-02-06 1971-01-12 Foamed materials and their preparation Expired GB1335973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB594670 1970-02-06

Publications (1)

Publication Number Publication Date
GB1335973A true GB1335973A (en) 1973-10-31

Family

ID=9805584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1335973D Expired GB1335973A (en) 1970-02-06 1971-01-12 Foamed materials and their preparation

Country Status (1)

Country Link
GB (1) GB1335973A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125045A (en) * 1982-07-09 1984-02-29 Koppers Co Inc Foamed phenolic resoles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125045A (en) * 1982-07-09 1984-02-29 Koppers Co Inc Foamed phenolic resoles

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Legal Events

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