GB1460485A - Process for producing siloxane-polyoxyalkylene block copolymers - Google Patents

Process for producing siloxane-polyoxyalkylene block copolymers

Info

Publication number
GB1460485A
GB1460485A GB1243774A GB1243774A GB1460485A GB 1460485 A GB1460485 A GB 1460485A GB 1243774 A GB1243774 A GB 1243774A GB 1243774 A GB1243774 A GB 1243774A GB 1460485 A GB1460485 A GB 1460485A
Authority
GB
United Kingdom
Prior art keywords
polysiloxane
block copolymers
toluene
prepared
polyether
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
GB1243774A
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Priority to GB1243774A priority Critical patent/GB1460485A/en
Publication of GB1460485A publication Critical patent/GB1460485A/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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/42—Block-or graft-polymers containing polysiloxane sequences
    • C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
    • 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • 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
    • C08J2483/00—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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silicon Polymers (AREA)

Abstract

1460485 Preparation of polysiloxane-polyether block copolymers; polyurethane foams UNION CARBIDE CORP 20 March 1974 12437/74 Headings C3R and C3T A polysiloxane-polyoxyalkylene block copolymer useful in making polyurethane foams is prepared by condensing a siloxane having at least one Si-bonded alkoxy group with a polyoxyalkylene polymer having at least one alcoholic OH group in the presence of a salt giving an apparent pH of 2À4-3À6 when 0À0033 moles of it are dissolved in 37 g. H 2 O and 48- 50 g. of C 4 H 9 (OC 2 H 4 ) 21 (OC 3 H 6 ) 16 OH; the reactants must make an at least partly compatible mixture, to which end solvents, e.g. toluene, benzene, xylene, heptane or octane, may be added. In the examples a polyether is condensed with a polysiloxane in toluene in the presence of the p-toluenesulphonate, dodecylbenzene sulphonate, or trifluoromethanesulphonate of pyridine, quinoline, diethylaniline, aniline, trioctylphosphine, or tridodecylamine. The block copolymers produced are incorporated in foams prepared from a propylene oxide, optionally with 14 wt. per cent ethylene oxide, adduct of glycerol and TDI, in the presence of water, tin dioctoate, trichlorofluoromethane and dimethyl ethanolamine or a triethylamine/ethyl morpholine mixture, and CFCl 3 .
GB1243774A 1974-03-20 1974-03-20 Process for producing siloxane-polyoxyalkylene block copolymers Expired GB1460485A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1243774A GB1460485A (en) 1974-03-20 1974-03-20 Process for producing siloxane-polyoxyalkylene block copolymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1243774A GB1460485A (en) 1974-03-20 1974-03-20 Process for producing siloxane-polyoxyalkylene block copolymers

Publications (1)

Publication Number Publication Date
GB1460485A true GB1460485A (en) 1977-01-06

Family

ID=10004593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1243774A Expired GB1460485A (en) 1974-03-20 1974-03-20 Process for producing siloxane-polyoxyalkylene block copolymers

Country Status (1)

Country Link
GB (1) GB1460485A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112135861A (en) * 2018-05-17 2020-12-25 赢创运营有限公司 Linear polydimethylsiloxane-polyoxyalkylene block copolymers of the ABA structure type

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112135861A (en) * 2018-05-17 2020-12-25 赢创运营有限公司 Linear polydimethylsiloxane-polyoxyalkylene block copolymers of the ABA structure type

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Legal Events

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