US4366280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organic polymeric materials stabilized with acylated hydroxy acid type compounds
Assignee: Ha Whitten & Co
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Filing: 1980-11-03
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Granted: 1982-12-28
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Expires: 2000-11-03
Abstract
Abstract Organic polymers selected from the group consisting of polyolefins unsaturated elastomers copolymers of monoolefines and diolefines with other vinyl monomers polystyrene and copolymers thereof polymers which are derived from α,β-unsaturated acids and derivatives thereof and copolymers of these monomers with other unsaturated monomers polymers derived from unsaturated alcohols and amines or derivatives thereof polyacetals polyamides and copolyamides are stabilized against thermooxidative deterioration by the addition of acylated hydroxy acid type compounds of the formula (I) ##STR1## Wherein the meanings of the substituents and symbols in formula (I) are as defined herein.
Inventors
- 👤 Muneaki Yukawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
44 words
A stabilized composition comprising an organic polymer selected from the group consisting of polyolefins, unsaturated elastomers, polystyrene and graft copolymers thereof, polymers which are derived from α,β-unsaturated acids, polymers derived from unsaturated alcohols and amines, polyacetals, and polyamides having incorporated therein calcium stearoyl lactate.
Claim 2
Dependent Claim
44 words
A stabilized composition comprising an organic polymer selected from the group consisting of polyolefins, unsaturated elastomers, polystyrene and graft copolymers thereof, polymers which are derived from α,β-unsaturated acids, polymers derived from unsaturated alcohols and amines, polyacetals, and polyamides having incorporated therein calcium stearoyl lactate.
Claim 3
Dependent Claim
17 words
A composition according to claim 1 comprising, as an additive, at least one sterically hindered phenolic compound.
Claim 4
Dependent Claim
34 words
A composition according to claim 2 comprising 0.05 to 2% by weight of calcium stearoyl lactate and 0.001 to 1% by weight of the sterically hindered phenolic compound with regard to the organic polymer.
Claim 5
Dependent Claim
13 words
A composition according to claim 1 wherein the organic polymer is a polyolefin.
Claim 6
Dependent Claim
16 words
A composition according to claim 1 wherein the organic polymer is a graft copolymer of styrene.
References Cited (Backward Citations)
US2733252A
Cited
US2510035A
Cited
US2590852A
Cited
US2595636A
Cited
US2782176A
Cited
US2789992A
Cited
US2864703A
Cited
GB1119010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |