US4234469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retarding polyolefin resin blend composition
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1979-01-22
•
Granted: 1980-11-18
•
Expires: 1999-01-22
Abstract
Abstract Flame retarded resin compositions are formed of specified quantities of polypropylene, polyethylene, inorganic filler and flame retarder such as an organic halide.
Inventors
- 👤 Yuzo Ohta
- 👤 Norio Sugi
- 👤 Osamu Isogai
- 👤 Takahiro Hirai
- 👤 Hidehiko Kaji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08K3/00; C08K3/01; C08K3/013; C08K3/34; C08K5/02; C08L; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L23/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A composition consisting essentially of from 30 to 80 percent by weight of polypropylene having a melt index of from 0.5 to 15.0 grams per 10 minutes (temperature: 230° C., load: 2.16 kilograms), from 5 to 25 percent by weight of polyethylene having a melt index of from 0.01 to 2.0 grams per 10 minutes (temperature: 190° C., load: 2.16 kilograms), from 20 to 40 percent by weight of at least one inorganic filler selected from the group consisting of powdered talc, kaolinite, sericite, silica and diatomaceous earth, from 5 to 35 percent by weight of an organic halide flame retarder, and an inorganic antimony compound as a flame retarding assistant in an amount of from 1/4 to 1/2 of the amount of said flame retarder, in which the amount of each component is based on the total amount of polypropylene, polyethylene and inorganic filler, said composition containing no chlorinated polyalkanes.
Claim 2
Dependent Claim
151 words
A composition consisting essentially of from 30 to 80 percent by weight of polypropylene having a melt index of from 0.5 to 15.0 grams per 10 minutes (temperature: 230° C., load: 2.16 kilograms), from 5 to 25 percent by weight of polyethylene having a melt index of from 0.01 to 2.0 grams per 10 minutes (temperature: 190° C., load: 2.16 kilograms), from 20 to 40 percent by weight of at least one inorganic filler selected from the group consisting of powdered talc, kaolinite, sericite, silica and diatomaceous earth, from 5 to 35 percent by weight of an organic halide flame retarder, and an inorganic antimony compound as a flame retarding assistant in an amount of from 1/4 to 1/2 of the amount of said flame retarder, in which the amount of each component is based on the total amount of polypropylene, polyethylene and inorganic filler, said composition containing no chlorinated polyalkanes.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said inorganic antimony compound is antimony trioxide.
Claim 4
Dependent Claim
25 words
The composition of claim 1, wherein said organic halide is an organic halide selected from the group consisting of decabromodiphenyl ether, dodecachlorododecahydrodimethanobenzocyclooctene and mixtures thereof.
References Cited (Backward Citations)
US3265771A
Cited
US3331797A
Cited
US3340123A
Cited
US3403036A
Cited
US3668155A
Cited
US3668281A
Cited
US3720643A
Cited
US3730940A
Cited
US3835091A
Cited
JPS4937417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |