US5015691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One part heat curable organopolysiloxane compositions
Assignee: General Electric Co
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Filing: 1989-05-22
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Granted: 1991-05-14
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Expires: 2009-05-22
Abstract
Abstract A one part heat curable organopolysiloxane composition is provided having an olefinically unsaturated organopolysiloxane, and an organohydrogenpolysiloxane, and a platinum catalyst encapsulated in an organic polymer such as a thermoplastic organic polymer, or a thermosetting organic polymer.
Inventors
- 👤 Larry N. Lewis
- 👤 Tony C. Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/10; C08J; C08J3/00; C08J3/24; C08J3/241; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20; C08J2383/00; C08J2383/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
74 words
A one part heat curable organopolysiloxane composition comprising by weight, (A) 100 parts of an organopolysiloxane having at least two olefinically unsaturated organic radicals (B) 1 to 20 parts of an organohydrogenpolysiloxane, and (C) an effective amount of a platinum catalyst microencapsulated in an organic polymer selected from the class consisting of a phenolformaldehyde resin, a melamineformaldehyde resin, a polyacrylic acid-polycondensed methylated methylolamine product, a polyethylene, a polystyrene, a polyacrylate and a poly(styrene-acrylonitrile copolymer).
Claim 2
Dependent Claim
74 words
A one part heat curable organopolysiloxane composition comprising by weight, (A) 100 parts of an organopolysiloxane having at least two olefinically unsaturated organic radicals (B) 1 to 20 parts of an organohydrogenpolysiloxane, and (C) an effective amount of a platinum catalyst microencapsulated in an organic polymer selected from the class consisting of a phenolformaldehyde resin, a melamineformaldehyde resin, a polyacrylic acid-polycondensed methylated methylolamine product, a polyethylene, a polystyrene, a polyacrylate and a poly(styrene-acrylonitrile copolymer).
Claim 3
Dependent Claim
34 words
A one part heat curable organopolysiloxane composition in accordance with claim 1, where the platinum catalyst is microencapsulated in a thermoplastic organic polymer selected from the class consisting of polyethylene, polymethylmethacrylate, polystyrene, and poly(styrene-acrylonitrile).
Claim 4
Dependent Claim
36 words
A one part heat curable organopolysiloxane composition in accordance with claim 1, where the platinum catalyst is microencapsulated in a thermosetting organic polymer selected from the class consisting of a phenolformaldehyde resin, and a melamineformaldehyde resin.
Claim 5
Dependent Claim
19 words
A one part heat curable organopolysiloxane composition in accordance with claim 2, where the thermoplastic organic polymer is polymethylmethacrylate.
Claim 6
Dependent Claim
21 words
A one part heat curable organopolysiloxane composition in accordance with claim 2, where the thermoplastic organic polymer is a poly(styrene-acrylonitrile) copolymer.
Claim 7
Dependent Claim
20 words
A one part heat curable organopolysiloxane composition in accordance with claim 2, where the thermoplastic organic polymer is a polystyrene.
Claim 8
Dependent Claim
21 words
A one part heat curable organopolysiloxane composition in accordance with claim 2, where the thermosetting organic polymer is a phenolformaldehyde resin.
Claim 9
Dependent Claim
22 words
A one part heat curable organopolysiloxane composition in accordance with claim 3, where the thermosetting organic polymer is a melamine formaldehyde resin.
Claim 10
Dependent Claim
20 words
A one part heat curable organopolysiloxane composition in accordance with claim 1, where the organopolysiloxane is a vinyl substituted polydimethylsiloxane.
Claim 11
Dependent Claim
20 words
A one part heat curable organopolysiloxane composition in accordance with claim 9, where the organopolysiloxane is a vinyl terminated polydimethylsiloxane.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |