US4059650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-drip additive system for fire retardant polypropylene
Assignee: Standard Oil Co
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Filing: 1976-01-27
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Granted: 1977-11-22
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Expires: 1996-01-27
Abstract
Abstract Non-dripping, preferably fire retardant polypropylene compositions comprising modified polypropylene component and a cross-linker. Conventional fire retardants can also be present.
Inventors
- 👤 Francis J. Slama
- 👤 Ivor R. Fielding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A composition comprising; a. a resinous polymer of propylene comprising an alpha, beta-ethylenically unsaturated carboxylic acid modified resinous polymer of propylene; and b. polyfunctional cross-linker containing vicinal polyepoxides wherein said polyfunctional cross-linker is present in a concentration of 0.5 to 15 parts by weight cross-linker per 100 parts by weight resinous polymer of propylene.
Claim 2
Dependent Claim
54 words
A composition comprising; a. a resinous polymer of propylene comprising an alpha, beta-ethylenically unsaturated carboxylic acid modified resinous polymer of propylene; and b. polyfunctional cross-linker containing vicinal polyepoxides wherein said polyfunctional cross-linker is present in a concentration of 0.5 to 15 parts by weight cross-linker per 100 parts by weight resinous polymer of propylene.
Claim 3
Dependent Claim
38 words
The composition of claim 1, wherein a fire retardant is present in a concentration of 0.5 to 50 parts by weight per 100 parts by weight of the total concentration of resinous polymer of propylene and polyfunctional cross-linker.
Claim 4
Dependent Claim
38 words
The composition of claim 1, wherein said resinous polymer of propylene comprises an unmodified resinous polymer of propylene in a concentration of 0.5 to 3 parts by weight per each part by weight modified resinous polymer of propylene.
Claim 5
Dependent Claim
38 words
The composition of claim 2, wherein said resinous polymer of propylene comprises an unmodified resinous polymer of propylene in a concentration of 0.5 to 3 parts by weight per each part by weight modified resinous polymer of propylene.
Claim 6
Dependent Claim
19 words
The composition of claim 4, wherein said unmodified resinous polymer of propylene comprises at least 75% by weight propylene.
Claim 7
Dependent Claim
48 words
The composition of claim 4, wherein said modified resinous polymer of propylene comprises a backbone polymer containing at least 75% by weight propylene and the pendant acid moieties provided by alpha, beta-ethylenically unsaturated carboxylic acid in said polymer comprise from 0.5 to 25% by weight of said polymer.
Claim 8
Dependent Claim
18 words
The composition of claim 6, wherein said fire retardant comprises an antimony compound and a halogenated organic compound.
Claim 9
Dependent Claim
16 words
The composition of claim 6, wherein said alpha, beta-ethylenically unsaturated carboxylic acid moieties are methacrylic acid.
Claim 10
Dependent Claim
15 words
The composition of claim 8, wherein said polyfunctional cross-linker is the digylcidyl ether of Bisphenol-A.
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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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |