US6140445A
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Silane functional oligomer
Assignee: General Electric Co
•
Filing: 1998-04-17
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Granted: 2000-10-31
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Expires: 2018-04-17
Abstract
Abstract Alkoxy silane oligomers which have a non-hydrolyzable carbon bridged bond to another silane functionality are taught herein, as well as their manufacture and utility.
Inventors
- 👤 Shiu-Chin Huang Su
- 👤 Herbert E. Petty
- 👤 Fredrick D. Osterholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:02
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/48; C08G77/485; C08F; C08F290/00; C08F290/08; C08F290/14; C08F290/148; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5425; C08L; C08L23/00; C08L23/02; C08L23/16; C09; C09D; C09D183/00; C09D183/10; C08G77/045; C08G77/12; C08G77/14; C08G77/18; C08G77/20; C08G77/42; C08G77/442
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
176 words
A composition comprising: (a) 10 to 80 percent by weight of a silane oligomer of the formula [R.sub.3 SiO.sub.1/2 ].sub.m [O.sub.1/2 Si(R.sub.2)O.sub.1/2 ].sub.n [SiO.sub.3/2 R].sub.o [SiO.sub.4/2 ].sub.p wherein Each R is selected individually from the group consisting of B, R 1 , --OR 1 and W; wherein B is a silane group bridged by other than an Si--O bond to the Si atom of the siloxane oligomer backbone; Each R 1 is individually a hydrocarbon group of 1 to 10 carbon atoms; each W individually is a monovalent radical; with the proviso that at least one R is a B and at least one-quarter of the R groups are OR 1 ; m=2 to 20; n=0 to 50; o=0 to 10; and p=0 to 5; and (b) 20 to 90%, by weight of a film-forming reactive silane polymer of a number average molecular weight of about 500 to 10,000 which silane polymer is the product of about 30-95%, by weight of ethylenically unsaturated nonsilane containing monomers and about 5-70%. by weight of ethylenically unsaturated silane-containing monomers.
Claim 2
Dependent Claim
176 words
A composition comprising: (a) 10 to 80 percent by weight of a silane oligomer of the formula [R.sub.3 SiO.sub.1/2 ].sub.m [O.sub.1/2 Si(R.sub.2)O.sub.1/2 ].sub.n [SiO.sub.3/2 R].sub.o [SiO.sub.4/2 ].sub.p wherein Each R is selected individually from the group consisting of B, R 1 , --OR 1 and W; wherein B is a silane group bridged by other than an Si--O bond to the Si atom of the siloxane oligomer backbone; Each R 1 is individually a hydrocarbon group of 1 to 10 carbon atoms; each W individually is a monovalent radical; with the proviso that at least one R is a B and at least one-quarter of the R groups are OR 1 ; m=2 to 20; n=0 to 50; o=0 to 10; and p=0 to 5; and (b) 20 to 90%, by weight of a film-forming reactive silane polymer of a number average molecular weight of about 500 to 10,000 which silane polymer is the product of about 30-95%, by weight of ethylenically unsaturated nonsilane containing monomers and about 5-70%. by weight of ethylenically unsaturated silane-containing monomers.
Claim 3
Dependent Claim
45 words
A composition according to claim 1 wherein B is --C f H 2f --SiR 2 g (X) 3-g wherein f=2 to 12, g=0 to 2, X is a halogen or --OR 2 , and each R 2 is selected from W and R 1 .
Claim 4
Dependent Claim
8 words
A composition according to claim 1 wherein m+n+o+p<50.
Claim 5
Dependent Claim
33 words
A composition according to claim 3 wherein W is an unsaturated non-aromatic hydrocarbon, hydroxy, an amine, an ester, a polyalkylene oxide, a thioester, an amide, a carbamate, an epoxy, cyano, polysulfide, or isocyanurate.
Claim 6
Dependent Claim
18 words
A composition according to claim 4 wherein at least half of the R groups are --OR 1 .
Claim 7
Dependent Claim
13 words
A composition according to claim 5 wherein o=0, m=2 and n=0 to 15.
Claim 8
Dependent Claim
13 words
A composition according to claim 6 wherein --OR 1 is methoxy or ethoxy.
Claim 9
Dependent Claim
106 words
A composition according to claim 7 wherein B is selected from the group consisting of: --(CH 2 ) 2 Si(OCH 3 ) 3 ; --(CH 2 ) 2 Si(OC 2 H 5 ) 3 --(CH 2 ) 2 Si(OCH 3 ) 2 (CH 3 ); --(CH 2 ) 2 Si(OCH 3 ) 2 Cl; --C 2 H 4 (C 6 H 9 )(C 2 H 4 Si(OCH 3 ) 3 ) 2 ; --C 2 H 4 (C 5 H 8 )C 2 H 4 Si(OC 2 H 5 ) 3 ; and --C 2 H 4 Si(OCH 3 ) 2 (OSi(OCH 3 ) 3 ).
Claim 10
Independent Claim
176 words
A method comprising: A. condensing either (a) an unsaturated alkyl alkoxy silane or (b) a hydrido alkoxy silane to form a siloxane oligomer; and B. Reacting via a hydrosilane reaction the siloxane oligomer with either a (c) hydrido alkoxy silane or (d) an unsaturated alkyl alkoxy silane, if (a) or (b), respectively, were used to form the oligomer in step A, to form a silane of the formula [R.sub.3 SiO.sub.1/2 ].sub.m [O.sub.1/2 Si(R.sub.2)O.sub.1/2 ].sub.n [SiO.sub.3/2 R].sub.o [SiO.sub.4/2 ].sub.p wherein Each R is selected individually from the group consisting of B, R 1 , --OR 1 and W; wherein B is a silane group bridged by other than an Si--O bond to the Si atom of the siloxane oligomer backbone; Each R 1 is individually a hydrocarbon group of 1 to 10 atoms; each W individually is a monovalent radical; with the proviso that at least one R is a B and at least half of the R groups are --OR 1 ; m=2 to 20; n=0 to 50; o=0 to 10; and p =0 to 5.
Claim 11
Independent Claim
176 words
A method comprising: A. condensing either (a) an unsaturated alkyl alkoxy silane or (b) a hydrido alkoxy silane to form a siloxane oligomer; and B. Reacting via a hydrosilane reaction the siloxane oligomer with either a (c) hydrido alkoxy silane or (d) an unsaturated alkyl alkoxy silane, if (a) or (b), respectively, were used to form the oligomer in step A, to form a silane of the formula [R.sub.3 SiO.sub.1/2 ].sub.m [O.sub.1/2 Si(R.sub.2)O.sub.1/2 ].sub.n [SiO.sub.3/2 R].sub.o [SiO.sub.4/2 ].sub.p wherein Each R is selected individually from the group consisting of B, R 1 , --OR 1 and W; wherein B is a silane group bridged by other than an Si--O bond to the Si atom of the siloxane oligomer backbone; Each R 1 is individually a hydrocarbon group of 1 to 10 atoms; each W individually is a monovalent radical; with the proviso that at least one R is a B and at least half of the R groups are --OR 1 ; m=2 to 20; n=0 to 50; o=0 to 10; and p =0 to 5.
Claim 12
Dependent Claim
18 words
A method according to claim 9 wherein at least half of the R groups are --OR 1 .
Claim 13
Dependent Claim
16 words
A method according to claim 10 wherein during step A, a tetra alkoxy silane is present.
Claim 14
Dependent Claim
17 words
A method according to claim 11 wherein the alkoxysilane oligomer is formed from an unsaturated alkoxy silane.
Claim 15
Dependent Claim
16 words
A method according to claim 12 wherein the unsatured alkoxy silane is a vinyl trialkoxy silane.
Claim 16
Dependent Claim
21 words
A method according to claim 13 wherein the condensation step A takes place in the presence of an ion exchange resin.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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