GB788599A - Improved silicone foamed resins - Google Patents

Improved silicone foamed resins

Info

Publication number
GB788599A
GB788599A GB21156/55A GB2115655A GB788599A GB 788599 A GB788599 A GB 788599A GB 21156/55 A GB21156/55 A GB 21156/55A GB 2115655 A GB2115655 A GB 2115655A GB 788599 A GB788599 A GB 788599A
Authority
GB
United Kingdom
Prior art keywords
resin
dinitrosopentamethylenetetramine
parts
heating
curing
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
GB21156/55A
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.)
Midland Silicones Ltd
Original Assignee
Midland Silicones 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 Midland Silicones Ltd filed Critical Midland Silicones Ltd
Publication of GB788599A publication Critical patent/GB788599A/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
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (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

A foamed resin having a density of less than 50 pounds per cubic foot may be made by heating a composition consisting essentially of from 15 to 75 parts by weight of powdered aluminium per 100 parts of an alkyl polysiloxane resin having an average of from 1 to 1.6 total alkyl radicals containing less than 3 carbon atoms and phenyl radicals per silicon atom, a blowing agent and desirably a curing catalyst, at a temperature, e.g. from 30 DEG to 300 DEG C., sufficient to cause foaming of the resin and curing thereof. Blowing agents specified are sodium bicarbonate, p,p1-oxy-bis-(benzenesulphonylhydrazide), dinitrosopentamethylenetetramine, methylhydrogensiloxane and ethylhydrogensiloxane, these last two compounds being used in conjunction with a hydroxylated compound such as butanol or a silanol as described in Specification 788,598. Catalysts specified are dibutyl-tin-diacetate, lead 2-ethylhexoate, amines, alkali metal hydroxides, ferric chloride, and quaternary ammonium salts. In examples, foamed resins are made by heating specific siloxanes with aluminium powder, dinitrosopentamethylenetetramine and 2-ethylhexoic acid and with or without diatomaceous earth. Specifications 717,807 and 769,237 also are referred to.
GB21156/55A 1954-10-04 1955-07-21 Improved silicone foamed resins Expired GB788599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US788599XA 1954-10-04 1954-10-04

Publications (1)

Publication Number Publication Date
GB788599A true GB788599A (en) 1958-01-02

Family

ID=22146630

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21156/55A Expired GB788599A (en) 1954-10-04 1955-07-21 Improved silicone foamed resins

Country Status (1)

Country Link
GB (1) GB788599A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109885B (en) * 1960-02-10 1961-06-29 Bayer Ag Process for the production of phenylmethylsiloxane resin foams
WO2023037271A1 (en) * 2021-09-08 2023-03-16 3M Innovative Properties Company Firm silicone rubber foam thermal insulation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109885B (en) * 1960-02-10 1961-06-29 Bayer Ag Process for the production of phenylmethylsiloxane resin foams
WO2023037271A1 (en) * 2021-09-08 2023-03-16 3M Innovative Properties Company Firm silicone rubber foam thermal insulation

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