Patent US4537829A successfully refreshed from Google Patents.
US4537829A
Expired / Lapsed
US
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Curable silicone compositions comprising resins
Assignee: Dow Silicones Corp
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Filing: 1984-09-20
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Granted: 1985-08-27
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Expires: 2004-09-20
Abstract
Abstract Silicone compositions are disclosed which comprise a liquid silicone resin, a vinyl-containing silicone resin, a siloxane polymer, and a hydrosilylation catalyst. The compositions cure to give unusually strong, fuel resistant coatings and elastomers.
Inventors
- 👤 John D. Blizzard
- 👤 Terence J. Swihart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:10
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C09; C09D; C09D183/00; C09D183/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/14; C08G77/16; C08G77/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
235 words
A composition comprising in combination, (A) from 1 to 200 parts by weight of the reaction product of (i) an organosilicon resin consisting essentially of R 3 SiO 1/2 units and SiO 4/2 units wherein R represents a monovalent hydrocarbon radical and the ratio of R 3 SiO 178 units to SiO 4/2 units is from 0.6/1 to 0.9/1 and (ii) a polyorganohydrogensiloxane; (B) 100 parts by weight of an organosilicon polymer having the formula R"R 2 'SiO(R 2 'SiO) x SiR 2 'R", wherein each R' is selected from the group consisting of monovalent hydrocarbon radicals, each R" is selected from the group consisting of OH radicals and R' radicals, x has a value of from 0 to 5000, there being on average at least two radicals of said organosilicon polymer selected from the group consisting of vinyl radicals and hydroxyl radicals; (C) from 1 to 50 parts by weight of an organosilicon resin consisting essentially of (CH 3 ) 2 (CH 2 ═CH)SiO 1/2 units, (CH 3 ) 3 SiO 178 units and SiO 4/2 units, said units being in a ratio of (CH 3 ) 2 (CH 2 ═CH)SiO 1/2 units to (CH 3 ) 3 SiO 1/2 units to SiO 4/2 units of from 0.10/0.6/1 to 0.25/0.9/1; and (D) from 0.00003 to 0.035 parts by weight of a hydrosilylation catalyst, said parts being by weight of the metal in the catalyst.
Claim 2
Dependent Claim
235 words
A composition comprising in combination, (A) from 1 to 200 parts by weight of the reaction product of (i) an organosilicon resin consisting essentially of R 3 SiO 1/2 units and SiO 4/2 units wherein R represents a monovalent hydrocarbon radical and the ratio of R 3 SiO 178 units to SiO 4/2 units is from 0.6/1 to 0.9/1 and (ii) a polyorganohydrogensiloxane; (B) 100 parts by weight of an organosilicon polymer having the formula R"R 2 'SiO(R 2 'SiO) x SiR 2 'R", wherein each R' is selected from the group consisting of monovalent hydrocarbon radicals, each R" is selected from the group consisting of OH radicals and R' radicals, x has a value of from 0 to 5000, there being on average at least two radicals of said organosilicon polymer selected from the group consisting of vinyl radicals and hydroxyl radicals; (C) from 1 to 50 parts by weight of an organosilicon resin consisting essentially of (CH 3 ) 2 (CH 2 ═CH)SiO 1/2 units, (CH 3 ) 3 SiO 178 units and SiO 4/2 units, said units being in a ratio of (CH 3 ) 2 (CH 2 ═CH)SiO 1/2 units to (CH 3 ) 3 SiO 1/2 units to SiO 4/2 units of from 0.10/0.6/1 to 0.25/0.9/1; and (D) from 0.00003 to 0.035 parts by weight of a hydrosilylation catalyst, said parts being by weight of the metal in the catalyst.
Claim 3
Dependent Claim
49 words
A composition as claimed in claim 1 wherein R is the methyl radical, R' is selected from the group consisting of methyl radicals and vinyl radicals, R" is selected from the group consisting of methyl radicals and vinyl radicals, and x has a value of from 50 to 2000.
Claim 4
Dependent Claim
11 words
A composition as claimed in claim 2 further comprising a filler.
Claim 5
Dependent Claim
12 words
A composition as claimed in claim 3 wherein the filler is alumina.
Claim 6
Dependent Claim
11 words
A composition as claimed in claim 2 further comprising a solvent.
Claim 7
Dependent Claim
12 words
A composition as claimed in claim 5 wherein the solvent is xylene.
Claim 8
Dependent Claim
12 words
A composition as claimed in claim 2 further comprising a cure promoter.
Claim 9
Dependent Claim
21 words
A composition as claimed in claim 7 wherein the cure promoter is a cyclosiloxane containing (CH 3 )(CH 2 ═CH)SiO units.
Claim 10
Dependent Claim
19 words
A composition as claimed in claim 7 wherein the cure promoter is ((CH 3 ) 2 HSi) 2 O.
Claim 11
Dependent Claim
12 words
A composition as claimed in claim 2 further comprising a hydrosilylation inhibitor.
Claim 12
Dependent Claim
14 words
A composition as claimed in claim 10 wherein the hydrosilylation inhibitor is methyl butynol.
Claim 13
Dependent Claim
44 words
A composition as claimed in claim 2 comprising from 5 to 100 parts by weight of Component (A); 100 parts of Component (B); from 5 to 25 parts by weight of Component (C); and from 0.00014 to 0.025 parts by weight of Component (D).
Claim 14
Dependent Claim
11 words
A composition as claimed in claim 12 further comprising a filler.
Claim 15
Dependent Claim
12 words
A composition as claimed in claim 13 wherein the filler is alumina.
Claim 16
Dependent Claim
11 words
A composition as claimed in claim 12 further comprising a solvent.
Claim 17
Dependent Claim
12 words
A composition as claimed in claim 15 wherein the solvent is xylene.
Claim 18
Dependent Claim
12 words
A composition as claimed in claim 12 further comprising a cure promoter.
Claim 19
Dependent Claim
21 words
A composition as claimed in claim 17 wherein the cure promoter is a cyclosiloxane containing (CH 3 )(CH 2 ═CH)SiO units.
Claim 20
Dependent Claim
19 words
A composition as claimed in claim 17 wherein the cure promoter is ((CH 3 ) 2 HSi) 2 O.
Claim 21
Dependent Claim
12 words
A composition as claimed in claim 12 further comprising a hydrosilylation inhibitor.
Claim 22
Dependent Claim
14 words
A composition as claimed in claim 20 wherein the hydrosilylation inhibitor is methyl butynol.
Claim 23
Dependent Claim
46 words
A composition as claimed in claim 12 comprising from 10 to 60 parts by weight of Component (A); 100 parts by weight of Component (B); from 10 to 25 parts by weight of Component (C); and from 0.0014 to 0.025 parts by weight of Component (D).
Claim 24
Dependent Claim
11 words
A composition as claimed in claim 22 further comprising a filler.
Claim 25
Dependent Claim
12 words
A composition as claimed in claim 23 wherein the filler is alumina.
Claim 26
Dependent Claim
11 words
A composition as claimed in claim 22 further comprising a solvent.
Claim 27
Dependent Claim
12 words
A composition as claimed in claim 25 wherein the solvent is xylene.
Claim 28
Dependent Claim
12 words
A composition as claimed in claim 22 further comprising a cure promoter.
Claim 29
Dependent Claim
21 words
A composition as claimed in claim 27 wherein the cure promoter is a cyclosiloxane containing (CH 3 )(CH 2 ═CH)SiO units.
Claim 30
Dependent Claim
19 words
A composition as claimed in claim 27 wherein the cure promoter is ((CH 3 ) 2 HSi) 2 O.
Claim 31
Dependent Claim
12 words
A composition as claimed in claim 22 further comprising a hydrosilylation inhibitor.
Claim 32
Dependent Claim
14 words
A composition as claimed in claim 30 wherein the hydrosilylation inhibitor is methyl butynol.
Claim 33
Dependent Claim
19 words
A composition as claimed in claim 31 further comprising ((CH 3 ) 2 HSi) 2 O, xylene, and alumina.
Claim 34
Dependent Claim
12 words
An article comprising the composition of claim 1 bonded to a substrate.
Claim 35
Dependent Claim
12 words
An article as claimed in claim 33 wherein the substrate is steel.
Claim 36
Dependent Claim
12 words
An article as claimed in claim 33 wherein the substrate is aluminum.
Claim 37
Dependent Claim
12 words
An article as claimed in claim 33 wherein the substrate is porcelain.
Claim 38
Dependent Claim
12 words
An article comprising the composition of claim 12 bonded to a substrate.
Claim 39
Dependent Claim
12 words
An article as claimed in claim 37 wherein the substrate is steel.
Claim 40
Dependent Claim
12 words
An article as claimed in claim 37 wherein the substrate is aluminum.
Claim 41
Dependent Claim
12 words
An article as claimed in claim 37 wherein the substrate is porcelain.
Claim 42
Dependent Claim
12 words
An article comprising the composition of claim 22 bonded to a substrate.
Claim 43
Dependent Claim
12 words
An article as claimed in claim 41 wherein the substrate is steel.
Claim 44
Dependent Claim
12 words
An article as claimed in claim 41 wherein the substrate is aluminum.
Claim 45
Dependent Claim
12 words
An article as claimed in claim 41 wherein the substrate is porcelain.
Claim 46
Dependent Claim
12 words
An article comprising the composition of claim 32 bonded to a substrate.
Claim 47
Dependent Claim
12 words
An article as claimed in claim 45 wherein the substrate is steel.
Claim 48
Dependent Claim
12 words
An article as claimed in claim 45 wherein the substrate is aluminum.
Claim 49
Dependent Claim
12 words
An article as claimed in claim 45 wherein the substrate is porcelain.
References Cited (Backward Citations)
US4310678A
Cited
US4322518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |