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公开(公告)号：CA2062333C
公开(公告)日：2003-11-11
申请号：CA2062333
申请日：1992-03-05
Applicant: DOW CORNING LTD , DOW CORNING SA
Inventor： DE LA CROI HABIMANA JEAN , WESTALL STEPHEN
Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si-OR groups, wherein R is H or alkyl in a volatile siloxane and adding a catalyst which is either a phosphonitrile halide having the general formula [X(PX2=N)n PX3]+[MX(v-y+1)R t]-, or a hetero- geneous catalyst selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate or carboxylates of Rb or Cs wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).
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公开(公告)号：CA2062333A1
公开(公告)日：1992-09-15
申请号：CA2062333
申请日：1992-03-05
Applicant: DOW CORNING SA , DOW CORNING
Inventor： DE LA CROI HABIMANA JEAN , WESTALL STEPHEN
Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si-OR groups, wherein R is H or alkyl in a volatile siloxane and adding a catalyst which is either a phosphonitrile halide having the general formula ¢X(PX2=N)nPX3!+¢MX(v-t+1)Rt!-, or a heterogeneous catalyst selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate or carboxylates of Rb or Cs wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).
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公开(公告)号：WO03016380A2
公开(公告)日：2003-02-27
申请号：PCT/EP0209821
申请日：2002-08-12
Applicant: DOW CORNING , WESTALL STEPHEN , SURGENOR AVRIL , HUPFIELD PETER CHESHIRE
Inventor： WESTALL STEPHEN , SURGENOR AVRIL , HUPFIELD PETER CHESHIRE
Abstract: An amino-functional polysiloxane is prepared by reacting an aminosilane (A) which contains an aminoalkyl group and at least one alkoxy group bonded to Si with a carboxylic acid and a silanol-functional polysiloxane (B). The aminosilane (A) is partially converted into its carboxylate salt which acts as a catalyst for the siloxane condensation polymerization reaction between (A) and (B).
Abstract translation: 氨基官能聚硅氧烷通过使含有氨基烷基和至少一个与Si键合的烷氧基的氨基硅烷（A）与羧酸和硅烷醇官能聚硅氧烷（B）反应来制备。 氨基硅烷（A）部分转化为其羧酸盐，其用作（A）和（B）之间的硅氧烷缩聚反应的催化剂。
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公开(公告)号：DE69211189T2
公开(公告)日：1996-11-07
申请号：DE69211189
申请日：1992-03-04
Applicant: DOW CORNING SA , DOW CORNING LTD
Inventor： HABIMANA JEAN DE LA CROI , WESTALL STEPHEN
Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si-OR groups, wherein R is H or alkyl in a volatile siloxane, and adding a catalyst which is either a phosphonitrile halide having the general formula [X(PX2=N)nPX3] [MX(v-t+1)Rt] , or a heterogeneous catalyst, selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate, or carboxylates of Rb or Cs, wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).
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公开(公告)号：DE69211189D1
公开(公告)日：1996-07-11
申请号：DE69211189
申请日：1992-03-04
Applicant: DOW CORNING SA , DOW CORNING LTD
Inventor： HABIMANA JEAN DE LA CROI , WESTALL STEPHEN
Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si-OR groups, wherein R is H or alkyl in a volatile siloxane, and adding a catalyst which is either a phosphonitrile halide having the general formula [X(PX2=N)nPX3] [MX(v-t+1)Rt] , or a heterogeneous catalyst, selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate, or carboxylates of Rb or Cs, wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).
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Patent Agency Ranking
公开(公告)号：ES2088097T3
公开(公告)日：1996-08-01
申请号：ES92301836
申请日：1992-03-04
Applicant: DOW CORNING SA , DOW CORNING
Inventor： HABIMANA JEAN DE LA CROI , WESTALL STEPHEN
Abstract: A method of making a dispersion of a high viscosity siloxane in a volatile, especially cyclic siloxane, comprises first dispersing organopolysiloxanes having at least 2 Si-OR groups, wherein R is H or alkyl in a volatile siloxane, and adding a catalyst which is either a phosphonitrile halide having the general formula [X(PX2=N)nPX3] [MX(v-t+1)Rt] , or a heterogeneous catalyst, selected from Li, Mg, Ca, Sr or Ba hydroxide, Na or K borate or phosphate, Rb or Cs carbonate, or carboxylates of Rb or Cs, wherein M is an element having an electronegativity of from 1.0 to 2.0, R is alkyl, X is halide, n is 1 to 6, v is the valence of M and t is from 0 to (v-1).
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公开(公告)号：ES2062322T3
公开(公告)日：1994-12-16
申请号：ES90300646
申请日：1990-01-22
Applicant: DOW CORNING
Inventor： REES SIAN BEVERLEY , WESTALL STEPHEN
Abstract: A process for the production of an organosilicon condensation product which comprises contacting (A) at least one organosilicon compound having in the molecule at least one silicon-bonded hydroxyl group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms in which the substituents are selected from amino, halogen, mercapto, hydroxyl, amido and ester, with (B) a hydroxide selected from the group consisting of magnesium, calcium, strontium and barium hydroxides.
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公开(公告)号：CA2044696A1
公开(公告)日：1991-12-29
申请号：CA2044696
申请日：1991-06-14
Applicant: DOW CORNING
Inventor： WESTALL STEPHEN
Abstract: Process for the production of organosiloxanes comprising contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent substituted hydrocarbon groups having from 1 to 10 carbon atoms, with (B) one or more compounds selected from rubidium carbonate, cesium carbonate and carboxylates of rubidium and cesium.
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公开(公告)号：IT1191637B
公开(公告)日：1988-03-23
申请号：IT2269285
申请日：1985-10-31
Applicant: DOW CORNING LTD
Inventor： WESTALL STEPHEN
IPC: D06M15/643 , C08G77/00 , C08G77/22 , C08G77/38 , C08G77/46 , C08G77/50 , C11D3/37 , D06M15/647 , C08G
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公开(公告)号：FR2546171B1
公开(公告)日：1987-07-10
申请号：FR8407736
申请日：1984-05-18
Applicant: DOW CORNING LTD
Inventor： WESTALL STEPHEN , WHITE JAMES WILLIAM
IPC: C08G77/00 , C08G77/46 , C09D183/04
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