Patent US3864135A successfully refreshed from Google Patents.
US3864135A
Expired / Lapsed
US
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Flame retardant and intumescent compositions
Assignee: Zeneca Inc
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Filing: 1973-10-26
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Granted: 1975-02-04
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Expires: 1993-10-26
Abstract
Abstract Novel adjuvants and combinations thereof are provided which have the properties of importing flame-retardancy and intumescence to polymeric materials. The new adjuvants comprise halogenated and phosphorus-containing adjuvants of diallyl chlorendate and mineral acid salts of phenylbiguanidine derivatives. The latter may be advantageously combined with a wide variety of phosphoruscontaining compounds, including especially, novel diallyl chlorendate derivatives to provide intumescent films and coatings.
Inventors
- 👤 Erich Kuehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:10
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4025; C08K; C08K5/00; C08K5/16; C08K5/29; C08K5/31; C09; C09D; C09D5/00; C09D5/18; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
18 words
A flame-retardant polymeric composition according to claim 1 wherein said phosphorus-containing compound is characterized by the generalized formula:
Claim 2
Dependent Claim
17 words
A flame-retardant polymeric composition according to claim 1 wherein said phosphorus-containing compound is characterized by the formula:
Claim 3
Dependent Claim
21 words
A moisture-curing polyurethane coating composition according to claim 3 containing about 37.5% by weight of said composition of said phosphorus-containing compound.
Claim 4
Dependent Claim
31 words
A moisture-curing polyurethane coating composition according to claim 3 containing about 4.3% by weight of said composition of said phosphorus-containing compound and about 43.4% by weight of said mineral acid salt.
Claim 5
Dependent Claim
32 words
A polyvinyl acetate emulsion based coating according to claim 3 containing about 13.0% by weight of said composition of said phosphorus-containing compound and about 26.0% by weight of said mineral acid salt.
Claim 6
Dependent Claim
20 words
A polyester film according to claim 3 containing about 5 parts by weight of said composition of said phosphorus-containing compound.
Claim 7
Independent Claim
43 words
A method of preparing a polymeric composition which comprises the steps of incorporating thereinto from about 5% to about 60% by weight of said composition of a flame-retarding agent selected from the group consisting of a phosphorus-containing compound characterized by the generalized formula:
Claim 8
Independent Claim
29 words
A method of preparing a polymeric composition which comprises the step of incorporating thereinto from about 5% to about 60% by weight of a compound characterized by the formula:
Claim 9
Dependent Claim
21 words
A composition of claim 1 wherein the flame-retarding agent is a mineral salt of a compound characterized by the generalized formula:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |