US4126593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin composition of improved flame retardancy and moldability
Assignee: Individual
•
Filing: 1976-10-18
•
Granted: 1978-11-21
•
Expires: 1996-10-18
Abstract
Abstract An inorganic filler which comprises a powdery inorganic compound, such as calcium carbonate or magnesium hydroxide, coated with a fatty acid ester of a polyhydric alcohol. A synthetic thermoplastic resin composition which is excellent in moldability and flowing characteristics and is furnished with impact-strength, flame-retarding property, self-extinguishability and the like properties is obtained by incorporating a resin with the inorganic filler subjected to the above modification treatment.
Inventors
- 👤 Hiroshi Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
C; C08; C08K; C08K9/00; C08K9/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
A resin composition of substantially improved flame retardancy and moldability comprising a thermoplastic resin having uniformly admixed therewith finely divided material in an amount at least 40% by weight of said admixture and sufficient to render said resin substantially flame retardant up to about 95% by weight of said mixture, said thermoplastic resin being present in the amount of about 60-5% by weight of said mixture, said finely divided material consisting essentially of a powdery inorganic compound coated prior to its admixture with said resin with about 0.5-5% of its weight of an ester of a polyhydric alcohol of the neopentyl series and a saturated fatty acid having about 8-18 carbon atoms.
Claim 2
Dependent Claim
112 words
A resin composition of substantially improved flame retardancy and moldability comprising a thermoplastic resin having uniformly admixed therewith finely divided material in an amount at least 40% by weight of said admixture and sufficient to render said resin substantially flame retardant up to about 95% by weight of said mixture, said thermoplastic resin being present in the amount of about 60-5% by weight of said mixture, said finely divided material consisting essentially of a powdery inorganic compound coated prior to its admixture with said resin with about 0.5-5% of its weight of an ester of a polyhydric alcohol of the neopentyl series and a saturated fatty acid having about 8-18 carbon atoms.
Claim 3
Dependent Claim
20 words
A resin composition according to claim 1 wherein said thermoplastic resin is polypropylene, propylene-ethylene block copolymer or propylene-ethylene random copolymer.
Claim 4
Dependent Claim
45 words
A resin composition according to claim 2 wherein said ester is a fatty acid ester of polyhydric alcohols of the neopentyl series with straight chain fatty acid containing 8-18 carbon atoms or mixture of straight chain fatty acids containing an average of 8-18 carbon atoms.
Claim 5
Dependent Claim
19 words
A resin composition according to claim 3 wherein said polyhydric alcohol of the neopentyl series is pentaerythritol or trimethylolpropane.
Claim 6
Dependent Claim
21 words
A resin composition according to claim 4 wherein the degree of esterification of said fatty acid ester averages at least 2.
Claim 7
Dependent Claim
16 words
A resin composition according to claim 5 wherein said fatty acid ester is a complete ester.
Claim 8
Dependent Claim
16 words
A resin composition as in claim 1, wherein said powdery inorganic compound is an inorganic hydroxide.
Claim 9
Dependent Claim
13 words
The resin composition of claim 7 wherein said powdery compound is magnesium hydroxide.
Claim 10
Dependent Claim
14 words
A resin composition of claim 1, wherein said thermoplastic resin is a polyolefin resin.
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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) | 1981-11-20 | 1982-05-22 | 1982-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-20 | 1986-05-22 | 1986-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-20 | 1990-05-22 | 1990-11-21 | $7700.00 | Window Closed / Lapsed |