US4156666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degradable synthetic resin compositions
Assignee: Shiseido Co Ltd
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Filing: 1975-10-31
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Granted: 1979-05-29
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Expires: 1995-10-31
Abstract
Abstract A degradable synthetic resin composition comprising a polyolefin, about 0.2 to 10% by weight of an organic degradation promotor and, optionally, about 10 to 60% by weight of an inorganic filler, and films for use in the agricultural environment prepared therefrom.
Inventors
- 👤 Ryoji Odate
- 👤 Yuuichi Miyahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:15
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0033; C08K5/04; C08K5/10; C08K5/101; C09; C09K; C09K17/00; C09K17/52; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A degradable synthetic resin composition consisting essentially of (A) a resin base consisting of a homopolymer of ethylene or propylene, a copolymer of ethylene and propylene, a mixture of polyethylene and polypropylene or a mixture of such materials, (B) about 0.2 to about 10% by weight, based on the total weight of the composition, of at least one degradation promotor selected from the group consisting of esters of fatty acids having 10-18 carbon atoms with monohydric aliphatic alcohols having 10-18 carbon atoms, and (C) about 10 to about 60% by weight, based on the total weight of the composition, of at least one inorganic filler selected from the group consisting of calcium carbonate, calcium sulfate, calcium phosphate, magnesium carbonate and magnesium silicate.
Claim 2
Dependent Claim
122 words
A degradable synthetic resin composition consisting essentially of (A) a resin base consisting of a homopolymer of ethylene or propylene, a copolymer of ethylene and propylene, a mixture of polyethylene and polypropylene or a mixture of such materials, (B) about 0.2 to about 10% by weight, based on the total weight of the composition, of at least one degradation promotor selected from the group consisting of esters of fatty acids having 10-18 carbon atoms with monohydric aliphatic alcohols having 10-18 carbon atoms, and (C) about 10 to about 60% by weight, based on the total weight of the composition, of at least one inorganic filler selected from the group consisting of calcium carbonate, calcium sulfate, calcium phosphate, magnesium carbonate and magnesium silicate.
Claim 3
Dependent Claim
37 words
The composition of claim 1, wherein said degradation promotor is myristyl myristate in an amount of 0.5 to 4.0% by weight, and said inorganic filler is calcium carbonate in an amount of 30 to 50% by weight.
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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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |