US4694030A
Expired / Lapsed
US
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Intumescent polysiloxane molding compositions
Assignee: Bayer AG
•
Filing: 1987-01-16
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Granted: 1987-09-15
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Expires: 2007-01-16
Abstract
Abstract The present invention relates to intumescent polysiloxane molding compositions containing expandable graphite compounds and, if appropriate, additionally nitrogen-containing phosphates.
Inventors
- 👤 Wulf von Bonin
- 👤 Hans Sattlegger
- 👤 Harold Ebneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C09; C09D; C09D5/00; C09D5/18; C09D5/185; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
15 words
An intumescent polysiloxane molding composition, comprising a polysiloxane molding composition and an expandable graphite compound.
Claim 2
Dependent Claim
15 words
An intumescent polysiloxane molding composition, comprising a polysiloxane molding composition and an expandable graphite compound.
Claim 3
Dependent Claim
14 words
A molding composition according to claim 1, wherein said graphite is a nitrosated graphite.
Claim 4
Dependent Claim
13 words
A molding composition according to claim 1, which further comprises a nitrogen-containing phosphate.
Claim 5
Dependent Claim
15 words
A molding compositions according to claim 3 wherein the nitrogen-containing phosphate is an ethylenediamine phosphate.
Claim 6
Dependent Claim
19 words
A molding composition according to claim 1 which further comprises a phosphoric acid ester and/or a phosphonic acid ester.
Claim 7
Dependent Claim
19 words
A molding composition according to claim 3 which further comprises a phosphoric acid ester and/or a phosphonic acid ester.
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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) | 1990-09-14 | 1991-03-16 | 1991-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-14 | 1995-03-16 | 1995-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-14 | 1999-03-16 | 1999-09-15 | $7700.00 | Window Closed / Lapsed |