US5567752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon- and nitrogen- containing adhesion promotors and compositions containing them
Assignee: General Electric Co
•
Filing: 1995-11-22
•
Granted: 1996-10-22
•
Expires: 2015-11-22
Abstract
Abstract Silicon- and nitrogen-containing compositions prepared by the reaction of an aminoalkylsilane such as 3-aminopropyl- or 3-methylaminopropyltrimethoxysilane with a glycidoxyalkylsilane such as 3-glycidoxypropyltrimethoxysilane are useful as adhesion promoters in addition curable polyorganosiloxane compositions. The latter are illustrated by mixtures of vinyl-substituted polyorganosiloxanes and hydride polyorganosiloxanes, also containing at least one platinum group metal compound as a hydrosilylation catalyst.
Inventors
- 👤 Judith Stein
- 👤 Jeffrey H. Wengrovius
- 👤 Paul R. Willey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 04:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/544; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20; C08G77/80; H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; H05K3/285; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
152 words
An addition curable composition comprising a mixture of: (A) at least one polyorganosiloxane having alkenyl groups bonded to silicon; (B) at least one hydride polyorganosiloxane comprising at least one organosiloxane unit having an Si--H moiety; (C) as a catalyst, at least one platinum group metal compound in an amount effective to cause hydrosilylation of reagent A with reagent B; and (D) an adhesion promoting proportion of a silicon- and nitrogen-containing composition which is the reaction product of at least one aminoalkylsilane of the formula ##STR6## with at least one glycidoxyalkylsilane of the formula ##STR7## wherein each of R 1 and R 2 is independently C 1-8 alkyl; each R 3 is independently hydrogen or C 1-4 primary or secondary alkyl; R 4 is hydrogen, C 1-4 primary or secondary alkyl or C 6-10 aryl or alkaryl; each a is independently 1-3 and each of m and n is independently 2 or 3.
Claim 2
Dependent Claim
152 words
An addition curable composition comprising a mixture of: (A) at least one polyorganosiloxane having alkenyl groups bonded to silicon; (B) at least one hydride polyorganosiloxane comprising at least one organosiloxane unit having an Si--H moiety; (C) as a catalyst, at least one platinum group metal compound in an amount effective to cause hydrosilylation of reagent A with reagent B; and (D) an adhesion promoting proportion of a silicon- and nitrogen-containing composition which is the reaction product of at least one aminoalkylsilane of the formula ##STR6## with at least one glycidoxyalkylsilane of the formula ##STR7## wherein each of R 1 and R 2 is independently C 1-8 alkyl; each R 3 is independently hydrogen or C 1-4 primary or secondary alkyl; R 4 is hydrogen, C 1-4 primary or secondary alkyl or C 6-10 aryl or alkaryl; each a is independently 1-3 and each of m and n is independently 2 or 3.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 wherein the alkenyl groups are vinyl groups.
Claim 4
Dependent Claim
13 words
A composition according to claim 2 wherein reagents A and B are polymethylsiloxanes.
Claim 5
Dependent Claim
13 words
A composition according to claim 3 wherein the platinum group metal is platinum.
Claim 6
Dependent Claim
11 words
A composition according to claim 3 which is a one-part composition.
Claim 7
Dependent Claim
27 words
A composition according to claim 5 wherein reagent A comprises a polymethylsiloxane comprising M and D units and having vinyl groups attached to the terminal silicon atoms.
Claim 8
Dependent Claim
12 words
A composition according to claim 6 which also contains a reinforcing filler.
Claim 9
Dependent Claim
53 words
A composition according to claim 5 wherein reagent A comprises a polymethylsiloxane comprising M and D units and having vinyl groups attached to the terminal silicon atoms, in admixture with about 25-40% based on reagent A of a polymethylsiloxane comprising M and Q units in a ratio in the range of about 0.3-0.7:1.
Claim 10
Dependent Claim
11 words
A composition according to claim 3 which is a two-part composition.
Claim 11
Dependent Claim
16 words
A composition according to claim 3 wherein each R 1 and each R 2 is methyl.
Claim 12
Dependent Claim
12 words
A composition according to claim 10 wherein each R 3 is hydrogen.
Claim 13
Dependent Claim
19 words
A composition according to claim 11 wherein each a is 3 and each of m and n is 3.
Claim 14
Dependent Claim
13 words
A composition according to claim 12 wherein R 4 is hydrogen or methyl.
Claim 15
Dependent Claim
164 words
An article comprising a metal or plastic substrate having a coating of an addition curable composition comprising a mixture of: (A) at least one polyorganosiloxane having alkenyl groups bonded to silicon; (B) at least one hydride polyorganosiloxane comprising at least one organosiloxane unit having an Si--H moiety; (C) as a catalyst, at least one platinum group metal compound in an amount effective to cause hydrosilylation of reagent A with reagent B; and (D) an adhesion promoting proportion of a silicon- and nitrogen-containing composition which is the reaction product of at least one aminoalkylsilane of the formula ##STR8## with at least one glycidoxyalkylsilane of the formula ##STR9## wherein each of R 1 and R 2 is independently C 1-8 alkyl; each R 3 is independently hydrogen or C 1-4 primary or secondary alkyl; R 4 is hydrogen, C 1-4 primary or secondary alkyl or C 6-10 aryl or alkaryl; each a is independently 1-3 and each of m and n is independently 2 or 3.
Claim 16
Dependent Claim
164 words
An article comprising a metal or plastic substrate having a coating of an addition curable composition comprising a mixture of: (A) at least one polyorganosiloxane having alkenyl groups bonded to silicon; (B) at least one hydride polyorganosiloxane comprising at least one organosiloxane unit having an Si--H moiety; (C) as a catalyst, at least one platinum group metal compound in an amount effective to cause hydrosilylation of reagent A with reagent B; and (D) an adhesion promoting proportion of a silicon- and nitrogen-containing composition which is the reaction product of at least one aminoalkylsilane of the formula ##STR8## with at least one glycidoxyalkylsilane of the formula ##STR9## wherein each of R 1 and R 2 is independently C 1-8 alkyl; each R 3 is independently hydrogen or C 1-4 primary or secondary alkyl; R 4 is hydrogen, C 1-4 primary or secondary alkyl or C 6-10 aryl or alkaryl; each a is independently 1-3 and each of m and n is independently 2 or 3.
References Cited (Backward Citations)
US3837876A
Cited
JPS5265529A
Cited
JPS5744690A
Cited
US4694093A
Cited
US4727168A
Cited
EP0320861A2
Cited
JPH04268385A
Cited
US5475044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-10-22 | 2000-04-22 | 2000-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-22 | 2004-04-22 | 2004-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-22 | 2008-04-22 | 2008-10-22 | $7700.00 | Window Closed / Lapsed |