US3915910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incombustible polyolefin composition comprising organic and inorganic filler
Assignee: Mitsubishi Chemical Corp
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Filing: 1974-12-10
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Granted: 1975-10-28
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Expires: 1994-12-10
Abstract
Abstract An incombustible polyolefin composition, which comprises 10-65 wt % of a polyolefin, 5-60 wt % of a powdered cellulose filler and 30-85 wt % of an inorganic filler which forms water upon thermal decomposition at temperatures less than the decomposition temperature of the polyolefin.
Inventors
- 👤 Seikou Nakano
- 👤 Hiroshi Yui
- 👤 Saburo Moriwaki
- 👤 Mitsuo Gochoh
- 👤 Takeshi Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:45
CPC Classifications
C; C08; C08L; C08L97/00; C08L97/02; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/24; C08K3/26; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L51/00; C08L51/06; C08L2201/00; C08L2201/02; C08L23/12; C08L23/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
AN INCOMBUSTIBLE POLYOLEFIN COMPOSITION, WHICH COMPRISES:10-65 WT % OF A POLYOLEFIN, 5-60 WT % OF A POWDERED CELLULOSE FILLER AND 30-85 WT % OF AN INORGANIC FILLER WHICH FORMS WATER UPON THERMAL DECOMPOSITION AT TEMPERATURES LES THAN THE DECOMPOSITION TEMPERATURE OF SAID POLYOLEFIN.
Claim 2
Dependent Claim
43 words
AN INCOMBUSTIBLE POLYOLEFIN COMPOSITION, WHICH COMPRISES:10-65 WT % OF A POLYOLEFIN, 5-60 WT % OF A POWDERED CELLULOSE FILLER AND 30-85 WT % OF AN INORGANIC FILLER WHICH FORMS WATER UPON THERMAL DECOMPOSITION AT TEMPERATURES LES THAN THE DECOMPOSITION TEMPERATURE OF SAID POLYOLEFIN.
Claim 3
Dependent Claim
20 words
The incombustible polyolefin composition of claim 1, wherein said inorganic filler is aluminum hydroxide, magnesium hydroxide or basic magnesium carbonate.
Claim 4
Dependent Claim
19 words
The incombustible polyolefin composition of claim 1, wherein said powdered cellulose filler is powdered wood, chaffs or powdered pulp.
Claim 5
Dependent Claim
27 words
The incombustible polyolefin composition of claim 1, wherein said polyolefin is polypropylene, propylene-ethylene copolymer, high density polyethylene, middle or low density polyethylene, grafted polypropylene or grafted polyethylene.
Claim 6
Dependent Claim
24 words
The incombustible polyolefin composition of claim 1, wherein said polyolefin is a combination of a homopolymer of ethylene or propylene and a grafted polyolefin.
Claim 7
Dependent Claim
22 words
The incombustible polyolefin composition of claim 1, wherein said cellulose filler is powdered wood filler and said inorganic filler is aluminum hydroxide.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |