US3331803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester plasticizer for polymers of vinyl chloride and process for preparing the same
Assignee: Chemische Werke Witten GmbH
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Filing: 1966-07-21
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Granted: 1967-07-18
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Expires: 1986-07-21
Abstract
No abstract record available.
Inventors
- 👤 Blaschke Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:42
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08L27/00; C08L27/02; C08L27/04; C08L27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A METHOD FOR THE MANUFACTURE OF A PLASTICIZED POLYMER OF VINYL CHLORIDE, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN A POLYMER OF VINYL CHLORIDE, SAID POLYMER CONTAINING VINYL CHLORIDE AS THE MAJOR CONSTITUENT THEREOF, AT LEAST 60% BY WEIGHT OF VINYL CHLORIDE, A POLYESTER HAVING A MOLECULAR WEIGHT BETWEEN 20,000 AND 80,000 AND PRODUCED BY THE REACTION BETWEN AN ACID SELECTED FROM THE GROUP CONSISTING OF SEBACIC ACID, AZELAIC ACID AND MISTURES THEREOF AND A DIHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF 1,4-BUTANEDIOL, 1,6-HEXANEDIOL AND MIXTURES THEREOF.
Claim 2
Dependent Claim
88 words
IN A METHOD FOR THE MANUFACTURE OF A PLASTICIZED POLYMER OF VINYL CHLORIDE, THE IMPROVEMENT WHICH COMPRISES INCORPORATING IN A POLYMER OF VINYL CHLORIDE, SAID POLYMER CONTAINING VINYL CHLORIDE AS THE MAJOR CONSTITUENT THEREOF, AT LEAST 60% BY WEIGHT OF VINYL CHLORIDE, A POLYESTER HAVING A MOLECULAR WEIGHT BETWEEN 20,000 AND 80,000 AND PRODUCED BY THE REACTION BETWEN AN ACID SELECTED FROM THE GROUP CONSISTING OF SEBACIC ACID, AZELAIC ACID AND MISTURES THEREOF AND A DIHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF 1,4-BUTANEDIOL, 1,6-HEXANEDIOL AND MIXTURES THEREOF.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |