US2609355A
Expired / Lapsed
US
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Stabilization of vinyl halide polymers with a composition containing an ester of an unsaturated alcohol
Assignee: Shell Development Co
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Filing: 1949-07-19
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Granted: 1952-09-02
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Expires: 1969-07-19
Abstract
No abstract record available.
Inventors
- 👤 De Loss E Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:56
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11; C08K5/15; C08K5/151; C08K5/1515
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AS A COMPOSITION OF MATTER, A VINYL CHLORIDE POLYMER CONTAINING AT LEAST 70% BY WEIGHT OF VINYL CHLORIDE CONTAINING AN ESTER OF (1) AN UNSATURATED ALCOHOL POSSESSING AT LEAST ONE OLEFINIC LINKAGE NOT MORE THAN 4 CARBON ATOMS REMOVED FROM THE CARBON ATOM BEARING THE HYDROXYL GROUP, AND (2) A POLYCARBOXYLIC ACID, AND A MEMBER OF THE GROUP CONSISTING OF THE EPOXY-CONTAINING ORGANIC MATERIALS AND THE SALTS OF CARBOXYLIC ACIDS HAVING AN IONIZATION CONSTANT THAT DOES NOT EXCEED THAT OF PHTHALIC ACID, THE AMOUNT OF THE ADDITIVES BEING SO PROPORTIONED AS TO RENDER THE SAID MATERIALS STABLE TO LIGHT.
Claim 2
Dependent Claim
99 words
AS A COMPOSITION OF MATTER, A VINYL CHLORIDE POLYMER CONTAINING AT LEAST 70% BY WEIGHT OF VINYL CHLORIDE CONTAINING AN ESTER OF (1) AN UNSATURATED ALCOHOL POSSESSING AT LEAST ONE OLEFINIC LINKAGE NOT MORE THAN 4 CARBON ATOMS REMOVED FROM THE CARBON ATOM BEARING THE HYDROXYL GROUP, AND (2) A POLYCARBOXYLIC ACID, AND A MEMBER OF THE GROUP CONSISTING OF THE EPOXY-CONTAINING ORGANIC MATERIALS AND THE SALTS OF CARBOXYLIC ACIDS HAVING AN IONIZATION CONSTANT THAT DOES NOT EXCEED THAT OF PHTHALIC ACID, THE AMOUNT OF THE ADDITIVES BEING SO PROPORTIONED AS TO RENDER THE SAID MATERIALS STABLE TO LIGHT.
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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |