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公开(公告)号：DE69714621T2
公开(公告)日：2003-04-03
申请号：DE69714621
申请日：1997-01-15
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A process for the hydrosilation of an alkyne comprises contacting an alkyne of formula R1Ctriple boundCH (I) with a hydridosilane of formula (R2)nHSiX3-n (II) at 40-150 [deg]C and in the presence of a Pt catalyst comprising a cycloalkadiene-Pt complex of formula Pt(R3)2 (III). R1 = H and 1-10C alkyl; R2 = 1-20C alkyl and aryl; X = halogen; and n = 0-3. R3 = 6-20C cycloalkadiene; and X is as previously defined.
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公开(公告)号：DE69705432D1
公开(公告)日：2001-08-09
申请号：DE69705432
申请日：1997-01-15
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A process for hydrosilation of a alkyne comprises contacting at 40-150 [deg]C an alkyne of formula R1Ctriple boundCH with a hydrosilane of formula (R2)nHSiX3-n in the presence of a platinum catalyst (C) and a 6-20C cycloalkadiene, in amt. of 0.1-5 mol (6-20C) per g-atom of Pt in (C). (C) is selected from Pt halides and their reaction prods. with organosilicon cpds. having terminal aliphatic unsaturation. R1 = H or 1-10C alkyl; R2 = 1-20C alkyl or aryl; X = halogen; and n = 0-3.
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公开(公告)号：DE69600777T2
公开(公告)日：1999-06-10
申请号：DE69600777
申请日：1996-05-20
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A method for preparing a silyl-functional telechelic polydiene comprises: (1) reacting in a non-polar solvent soln. a mixt. comprising: (a) monomer(s) of formula (I); and (b) a di-anionic initiator which is soluble in the non-polar solvent; to form a di-anionically active polydiene; and (2) capping both ends of the polydiene with: (c) a silane of formula (II); the capping being carried out in the presence of: (c) a promoter of a tertiary amine and a crown ether based on 12-crown-4. The silyl-functional telechelic polydiene has at least 70% 1,4- microstructure and at least 70% of its end gps. are capped by the silane. Also claimed are: (1) a silyl-functional telechelic polydiene as described above; and (2) a silyl-functional telechelic copolymer having a main chain of formula (III) or (IV). CH2=C(Q)CH=CH2 (I) Q = H, methyl, F or Cl. RnSiX(4-n) (II) R = H or 1-20 C alkyl; X = halogen, 2-6C acyloxy, 2-12C dialkyl aminoxy or 1-6C alkoxy; and n = 0-3; provided R = H when n = 1 or 2; and R(s) = aryl when n = 3. -Z-G-Z- (III) -G-Z- (IV) G = (I); and Z = a segment with repeat units based on a non-diene, olefinic, anionically polymerisable monomer; in which at least 70% of diene-based repeat units have a 1,4-microstructure and at least 70% of the copolymer's terminal gps. have the formula (II).
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公开(公告)号：DE69600777D1
公开(公告)日：1998-11-19
申请号：DE69600777
申请日：1996-05-20
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A method for preparing a silyl-functional telechelic polydiene comprises: (1) reacting in a non-polar solvent soln. a mixt. comprising: (a) monomer(s) of formula (I); and (b) a di-anionic initiator which is soluble in the non-polar solvent; to form a di-anionically active polydiene; and (2) capping both ends of the polydiene with: (c) a silane of formula (II); the capping being carried out in the presence of: (c) a promoter of a tertiary amine and a crown ether based on 12-crown-4. The silyl-functional telechelic polydiene has at least 70% 1,4- microstructure and at least 70% of its end gps. are capped by the silane. Also claimed are: (1) a silyl-functional telechelic polydiene as described above; and (2) a silyl-functional telechelic copolymer having a main chain of formula (III) or (IV). CH2=C(Q)CH=CH2 (I) Q = H, methyl, F or Cl. RnSiX(4-n) (II) R = H or 1-20 C alkyl; X = halogen, 2-6C acyloxy, 2-12C dialkyl aminoxy or 1-6C alkoxy; and n = 0-3; provided R = H when n = 1 or 2; and R(s) = aryl when n = 3. -Z-G-Z- (III) -G-Z- (IV) G = (I); and Z = a segment with repeat units based on a non-diene, olefinic, anionically polymerisable monomer; in which at least 70% of diene-based repeat units have a 1,4-microstructure and at least 70% of the copolymer's terminal gps. have the formula (II).
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公开(公告)号：DE69619051T2
公开(公告)日：2002-09-26
申请号：DE69619051
申请日：1996-09-23
Applicant: DOW CORNING
Inventor： BURNS GARY THOMAS , KENNAN LINDA DENISE , ROY AROOP KUMAR , TSELEPIS ARTHUR JAMES
Abstract: A method of hydrophobicising a filler comprises: (i) contacting a filler of inorganic pigments, metal oxides, metal hydroxides or silicate minerals, with an oxa-sila-cycloalkane in an amt. sufficient for at least a portion of the hydroxyl functionality on the filler to be replaced with carbinol functionality. Also claimed are: (1) a filler prepd. by the above method; and (2) a filler having a surface contg. carbinol functionality of formula (I): R' = 1-6C alkyl, aryl, aralkyl, alkaryl or halohydrocarbon; and R" = -CH2CH(CH3)CH2-, -CH2CH2CH2-, -CH(C6H5)CH2CH2- or -CH2CH2CH2CH2-.
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Patent Agency Ranking
公开(公告)号：DE69714621D1
公开(公告)日：2002-09-19
申请号：DE69714621
申请日：1997-01-15
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A process for the hydrosilation of an alkyne comprises contacting an alkyne of formula R1Ctriple boundCH (I) with a hydridosilane of formula (R2)nHSiX3-n (II) at 40-150 [deg]C and in the presence of a Pt catalyst comprising a cycloalkadiene-Pt complex of formula Pt(R3)2 (III). R1 = H and 1-10C alkyl; R2 = 1-20C alkyl and aryl; X = halogen; and n = 0-3. R3 = 6-20C cycloalkadiene; and X is as previously defined.
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公开(公告)号：DE69411459T2
公开(公告)日：1999-03-04
申请号：DE69411459
申请日：1994-06-09
Applicant: DOW CORNING
Inventor： BURNS GARY THOMAS , DECKER GARY THOMAS , ROY AROOP KUMAR
Abstract: The present invention is a method for the preparation of carbinol-functional organosiloxanes and carbinol-functional organosiloxane resins. The method comprises contacting a cyclic silyl ether with an organosiloxane or an organosiloxane resin at a temperature within a range of 25 DEG C. to 150 DEG C. The method may be conducted in the presence of an inert organic solvent to facilitate dissolution and contact of the reactants.
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公开(公告)号：DE69619051D1
公开(公告)日：2002-03-21
申请号：DE69619051
申请日：1996-09-23
Applicant: DOW CORNING
Inventor： BURNS GARY THOMAS , KENNAN LINDA DENISE , ROY AROOP KUMAR , TSELEPIS ARTHUR JAMES
Abstract: A method of hydrophobicising a filler comprises: (i) contacting a filler of inorganic pigments, metal oxides, metal hydroxides or silicate minerals, with an oxa-sila-cycloalkane in an amt. sufficient for at least a portion of the hydroxyl functionality on the filler to be replaced with carbinol functionality. Also claimed are: (1) a filler prepd. by the above method; and (2) a filler having a surface contg. carbinol functionality of formula (I): R' = 1-6C alkyl, aryl, aralkyl, alkaryl or halohydrocarbon; and R" = -CH2CH(CH3)CH2-, -CH2CH2CH2-, -CH(C6H5)CH2CH2- or -CH2CH2CH2CH2-.
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公开(公告)号：DE69411459D1
公开(公告)日：1998-08-13
申请号：DE69411459
申请日：1994-06-09
Applicant: DOW CORNING
Inventor： BURNS GARY THOMAS , DECKER GARY THOMAS , ROY AROOP KUMAR
Abstract: The present invention is a method for the preparation of carbinol-functional organosiloxanes and carbinol-functional organosiloxane resins. The method comprises contacting a cyclic silyl ether with an organosiloxane or an organosiloxane resin at a temperature within a range of 25 DEG C. to 150 DEG C. The method may be conducted in the presence of an inert organic solvent to facilitate dissolution and contact of the reactants.
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公开(公告)号：DE69705433T2
公开(公告)日：2002-05-16
申请号：DE69705433
申请日：1997-01-15
Applicant: DOW CORNING
Inventor： ROY AROOP KUMAR
Abstract: A process for hydrosilation of an alkyne comprises contacting an alkyne of formula (I) with a hydridosilane of formula (II) at 40-150 [deg]C in the presence of a Pt catalyst selected from Pt halides and the reaction prod. of Pt halides with organosilicon cpds. having terminal aliphatic unsatn. and a 6-20 C cycloalkene in amt. sufficient to reduce formation of a bis-hydrosilated adduct of the alkyne. R1C=CH (I) (R2)nHSiX3-n (II) R1 = H or 1-10 C alkyl; R2 = 1-20 C alkyl and aryl; X = halogen; and n = 0 or 1.
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