GB930470A - Improvements in or relating to catalyst compositions for curing organopolysiloxanes - Google Patents

Improvements in or relating to catalyst compositions for curing organopolysiloxanes

Info

Publication number
GB930470A
GB930470A GB1919759A GB1919759A GB930470A GB 930470 A GB930470 A GB 930470A GB 1919759 A GB1919759 A GB 1919759A GB 1919759 A GB1919759 A GB 1919759A GB 930470 A GB930470 A GB 930470A
Authority
GB
United Kingdom
Prior art keywords
zinc
tin
mixture
emulsion
diacetate
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
GB1919759A
Inventor
Maurice Richard Porter
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
Priority to GB1919759A priority Critical patent/GB930470A/en
Publication of GB930470A publication Critical patent/GB930470A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions 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; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • 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
    • C08G77/04—Polysiloxanes
    • C08G77/12—Polysiloxanes containing silicon bound to hydrogen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Paints Or Removers (AREA)

Abstract

A catalyst composition, used for curing polysiloxane emulsions, comprises (a) a waterinsoluble acyclic organic compound of tin or zinc, or a mixture thereof, and (b) an emulsifying agent which is soluble in (a) or in a solution of (a) in an organic solvent. Specified ingredients are dibutyl tin dilaurate and diacetate, dioctyl tin dilaurate and dioctoate and zinc and stannous octoates. Condensation products of alkylphenols, e.g. octylphenol and nonylphenol, with ethylene oxide are the preferred emulsifying agents. Specification 491,501 is referred to.ALSO:An aqueous emulsion of an organopolysiloxane containing silicon-bonded hydrogen atoms is cured by addition of a non-aqueous catalyst composition comprising (a) a waterinsoluble acyclic organic compound of tin or zinc or mixture thereof and (b) an emulsifying agent which is soluble in (a) or in a solution of (a) in an organic solvent. Specified tin and zinc compounds are n-dibutyltin dilaurate and diacetate, dioctyltin dilaurate and dioctoate and zinc and stannous octoates. In examples, (1) zinc octoate and di-n-butyltin diacetate are added separately to toluene and after stirring a polyethylene oxide derivative is admixed; an aqueous emulsion of the catalyst solution so prepared is mixed with an emulsion containing 5% wt. of a mixture of methyl hydrogen polysiloxane and a hydroxylated dimethyl polysiloxane and the product is used to treat cloth, resulting, after cure at 150 DEG C. for 5 minutes, in water-repellent properties; and (2) the same emulsion is also used to treat paper. Specification 491,501 is referred to.ALSO:An aqueous emulsion of an organopolysiloxane containing silicon-bonded hydrogen atoms is cured by addition of a non-aqueous catalyst composition comprising (a) a water-insoluble acyclic organic compound of tin or zinc or mixture thereof and (b) an emulsifying agent which is soluble in (a) or in a solution of (a) in an organic solvent. Specified tin and zinc compounds are p n-dibutyltin dilaurate and diacetate, dioctyltin dilaurate and dioctoate and zinc and stannous octoates. In examples, (1) zinc octoate and di-n-butyltin diacetate are added separately to toluene and after stirring a polyethylene oxide derivative is admixed; an aqueous emulsion of the catalyst solution so prepared is mixed with an emulsion containing 5% wt. of a mixture of methyl hydrogen polysiloxane and a hydroxylated dimethyl polysiloxane and the product is used to treat cloth, resulting, after cure at 150 DEG C. for 5 minutes, in water-repellent properties; and (2) the same emulsion is also used to treat paper. Specification 491,501 is referred to.
GB1919759A 1959-06-04 1959-06-04 Improvements in or relating to catalyst compositions for curing organopolysiloxanes Expired GB930470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1919759A GB930470A (en) 1959-06-04 1959-06-04 Improvements in or relating to catalyst compositions for curing organopolysiloxanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1919759A GB930470A (en) 1959-06-04 1959-06-04 Improvements in or relating to catalyst compositions for curing organopolysiloxanes

Publications (1)

Publication Number Publication Date
GB930470A true GB930470A (en) 1963-07-03

Family

ID=10125364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1919759A Expired GB930470A (en) 1959-06-04 1959-06-04 Improvements in or relating to catalyst compositions for curing organopolysiloxanes

Country Status (1)

Country Link
GB (1) GB930470A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036820A1 (en) * 1999-03-18 2000-09-20 Wacker-Chemie GmbH Storage-stable organopolysiloxane compositions, curable into elastomers by elimination of alcohols
CN113522361A (en) * 2020-04-22 2021-10-22 江西蓝星星火有机硅有限公司 Immobilized catalyst for purifying cyclosiloxane

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1036820A1 (en) * 1999-03-18 2000-09-20 Wacker-Chemie GmbH Storage-stable organopolysiloxane compositions, curable into elastomers by elimination of alcohols
US6303678B1 (en) 1999-03-18 2001-10-16 Wacker-Chemie Gmbh Storage-stable organopolysiloxane compositions which can be crosslinked to give elastomers with elimination of alcohols
CN100376618C (en) * 1999-03-18 2008-03-26 瓦克化学股份公司 Stable storage organic polyorganosiloxane composition capable of de alcoholizing and crosslinking to obtain elastomer
CN113522361A (en) * 2020-04-22 2021-10-22 江西蓝星星火有机硅有限公司 Immobilized catalyst for purifying cyclosiloxane
CN113522361B (en) * 2020-04-22 2023-02-03 江西蓝星星火有机硅有限公司 Immobilized catalyst for purifying cyclosiloxane

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