US4960847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room temperature vulcanizable organopolysiloxane composition
Assignee: Shin-Etsu Chemical Co Ltd
•
Filing: 1988-07-07
•
Granted: 1990-10-02
•
Expires: 2008-07-07
Abstract
Abstract A room temperature vulcanizable organopolysiloxane composition capable of yielding a cured product exhibiting an improved resistance to oil and improved adhesiveness to metals, which comprises a diorganopolysiloxane blocked with a hydroxyl group at both ends of the molecule, an organosilane or siloxane having at least two hydrolyzable groups, each bonded to a silicone atom, in one molecule, and an organosilane or siloxane having at least one vinyl group and at least one hydroxyl group, each bonded to a silicon atom, in one molecule. The composition may further comprise a filler.
Inventors
- 👤 Masatoshi Arai
- 👤 Shinichi Satoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08K5/541; C08K5/5425; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/20; C08G77/22; C08G77/24; C08G77/70; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
175 words
A room temperature vulcanizable organopolysiloxane composition, comprising the following first to third ingredients: 100 parts by weight of a diorganopolysiloxane blocked with a hydroxyl group at both ends of the molecule and having the formula ##STR8## wherein R 1 and R 2 independently represent an alkyl group having from 1 to 8 carbon atoms, a cyclohexyl group, an alkenyl group or an aryl group with or without a halogen substituent and n is an integer such that the diorganopolysiloxane has a viscosity in the range of 25 to 500,000 centistokes at 25° C.; from 0.5 to 30 parts by weight of an organosilane or siloxane having at least two hydrolyzable groups bonded to the silicon atom or atoms in one molecule; and from 0.1 to 100 parts by weight of an organosilane or a branched organosiloxane obtained by co-hydrolysis of a monofunctional chlorosilane and a trifunctional or tetrafunctional silane, said organosilane or branched organosiloxane having at least one vinyl group and at least one hydroxyl group each bonded to a silicon atom in the molecule.
Claim 2
Dependent Claim
175 words
A room temperature vulcanizable organopolysiloxane composition, comprising the following first to third ingredients: 100 parts by weight of a diorganopolysiloxane blocked with a hydroxyl group at both ends of the molecule and having the formula ##STR8## wherein R 1 and R 2 independently represent an alkyl group having from 1 to 8 carbon atoms, a cyclohexyl group, an alkenyl group or an aryl group with or without a halogen substituent and n is an integer such that the diorganopolysiloxane has a viscosity in the range of 25 to 500,000 centistokes at 25° C.; from 0.5 to 30 parts by weight of an organosilane or siloxane having at least two hydrolyzable groups bonded to the silicon atom or atoms in one molecule; and from 0.1 to 100 parts by weight of an organosilane or a branched organosiloxane obtained by co-hydrolysis of a monofunctional chlorosilane and a trifunctional or tetrafunctional silane, said organosilane or branched organosiloxane having at least one vinyl group and at least one hydroxyl group each bonded to a silicon atom in the molecule.
Claim 3
Dependent Claim
17 words
A room temperature vulcanizable organopolysiloxane composition according to claim 1, wherein the second ingredient is an organosiloxane.
Claim 4
Dependent Claim
17 words
A room temperature vulcanizable organopolysiloxane composition according to claim 2, wherein the second ingredient is an organosilane.
Claim 5
Dependent Claim
17 words
A room temperature vulcanizable organopolysiloxane composition according to claim 1, wherein the third ingredient is the organosilane.
Claim 6
Dependent Claim
23 words
A room temperature vulcanizable organopolysiloxane composition according to claim 4, wherein said third ingredient organosilane is a compound of the following formula ##STR9##
Claim 7
Dependent Claim
23 words
A room temperature vulcanizable organopolysiloxane composition according to claim 4, wherein said third ingredient organosilane is a compound of the following formula ##STR10##
Claim 8
Dependent Claim
25 words
A room temperature vulcanizable organopolysiloxane composition according to claim 4, wherein said third ingredient organosilane is a compound of the following formula (CH.sub.2 ═CH).sub.3 Si--OH.
Claim 9
Dependent Claim
18 words
A room temperature vulcanizable organopolysiloxane composition according to claim 1, wherein the third ingredient is the branched organosiloxane.
Claim 10
Dependent Claim
36 words
A room temperature vulcanizable organopolysiloxane composition according to claim 1, wherein the third ingredient is used in an amount of from 0.5 to 30 parts by weight per 100 parts by weight of the first ingredient.
Claim 11
Dependent Claim
31 words
A room temperature vulcanizable organopolysiloxane composition according to claim 1, further comprising not larger than 500 parts by weight of a filler per 100 parts by weight of the first ingredient.
Claim 12
Dependent Claim
34 words
A room temperature vulcanizable organopolysiloxane composition according to claim 10, wherein the filler is used in amount of from 10 to 200 parts by weight per 100 parts by weight of the first ingredient.
Claim 13
Dependent Claim
13 words
A cured product of the room temperature vulcanizable organopolysiloxane composition of claim 1.
Claim 14
Dependent Claim
172 words
A room temperature vulcanizable organopolysiloxane composition, comprising the following first to third ingredients: 100 parts by weight of a diorganopolysiloxane blocked with a hydroxyl group at both ends of the molecule and having the formula ##STR11## wherein R 1 and R 2 independently represent an alkyl group having from 1 to 8 carbon atoms, a cyclohexyl group or an aryl group with or without a halogen substituent and n is an integer such that the diorganopolysiloxane has a viscosity in the range of 25 to 500,000 centistokes at 25° C.; from 0.5 to 30 parts by weight of an organosilane or siloxane having at least two hydrolyzable groups bonded to the silicon atom or atoms in one molecule; and from 0.1 to 100 parts by weight of an organosilane or a branched organosiloxane obtained by co-hydrolysis of a monofunctional chlorisilane and a trifunctional or tetrafunctional silane, said organosilane or branched organosiloxane having at least one vinyl group and at least one hydroxyl group each bonded to a silicon atom in the molecule.
Claim 15
Dependent Claim
172 words
A room temperature vulcanizable organopolysiloxane composition, comprising the following first to third ingredients: 100 parts by weight of a diorganopolysiloxane blocked with a hydroxyl group at both ends of the molecule and having the formula ##STR11## wherein R 1 and R 2 independently represent an alkyl group having from 1 to 8 carbon atoms, a cyclohexyl group or an aryl group with or without a halogen substituent and n is an integer such that the diorganopolysiloxane has a viscosity in the range of 25 to 500,000 centistokes at 25° C.; from 0.5 to 30 parts by weight of an organosilane or siloxane having at least two hydrolyzable groups bonded to the silicon atom or atoms in one molecule; and from 0.1 to 100 parts by weight of an organosilane or a branched organosiloxane obtained by co-hydrolysis of a monofunctional chlorisilane and a trifunctional or tetrafunctional silane, said organosilane or branched organosiloxane having at least one vinyl group and at least one hydroxyl group each bonded to a silicon atom in the molecule.
References Cited (Backward Citations)
US3997497A
Cited
US4356116A
Cited
JPS57174347A
Cited
US4503210A
Cited
JPS60231761A
Cited
US4689363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |