Patent US3931091A successfully refreshed from Google Patents.
US3931091A
Expired / Lapsed
US
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Polyvinyl chloride compositions plasticized with m-ethylphenyl phosphate
Assignee: Labofina SA
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Filing: 1973-05-14
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Granted: 1976-01-06
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Expires: 1993-05-14
Abstract
Abstract A plasticized polyvinyl chloride composition and method for its preparation, the plasticized polyvinyl chloride composition comprising polyvinyl chloride and an organic phosphate selected from the group consisting of the phosphates of the formula (C 6 H 5 ) x (m-C 2 H 5 C 6 H 4 ) y PO 4 , wherein x is 0,1 or 2 and y is 1,2 or 3, x + y being 3, and mixtures of said phosphates, the amount of said organic phosphates being within the range of 20 to 100 parts by weight per 100 parts by weight of polyvinyl chloride.
Inventors
- 👤 Pierre M. J. G. de Radzitzky d'Ostrowick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:38
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
Plasticized polyvinyl chloride compositions comprising polyvinyl chloride and an a plasticizer consisting essentially of organic phosphate selected from the group consisting of the phosphates of the formula (C 6 H 5 ) x (m-C 2 H 5 C 6 H 4 ) y PO 4 , wherein x is 0, 1 or 2 and y is 1, 2 or 3, x + y being 3, and mixtures of said phosphates, the amount of said organic phosphates being within the range of 20 to 100 parts by weight per 100 parts by weight of polyvinyl chloride.
Claim 2
Dependent Claim
95 words
Plasticized polyvinyl chloride compositions comprising polyvinyl chloride and an a plasticizer consisting essentially of organic phosphate selected from the group consisting of the phosphates of the formula (C 6 H 5 ) x (m-C 2 H 5 C 6 H 4 ) y PO 4 , wherein x is 0, 1 or 2 and y is 1, 2 or 3, x + y being 3, and mixtures of said phosphates, the amount of said organic phosphates being within the range of 20 to 100 parts by weight per 100 parts by weight of polyvinyl chloride.
Claim 3
Dependent Claim
14 words
The plasticized polyvinyl chloride of claim 1 wherein said organic phosphate is tri(m-ethylphenyl) phosphate.
Claim 4
Dependent Claim
29 words
The plasticized polyvinyl chloride of claim 1 wherein said organic phosphate is one prepared from a metaethylphenol containing the para-isomer thereof in concentration of less than 10% by weight.
Claim 5
Dependent Claim
29 words
The plasticized polyvinyl chloride of claim 1 wherein said organic phosphate is one prepared from a metaethylphenol containing the ortho-isomer thereof in concentration of less than 1% by weight.
Claim 6
Dependent Claim
80 words
A process for plasticizing polyvinyl chloride comprising incorporating into a polyvinyl chloride polymer 20 to 100 parts by weight of an organic phosphate plasticizer per 100 parts by weight of polyvinyl chloride, said organic phosphate consisting essentially of one having the formula (C 6 H 5 ) x (m-C 2 H 5 C 6 H 4 ) y PO 4 , wherein x is 0, 1 or 2 and y is 1, 2 or 3, x + y being 3.
Claim 7
Dependent Claim
80 words
A process for plasticizing polyvinyl chloride comprising incorporating into a polyvinyl chloride polymer 20 to 100 parts by weight of an organic phosphate plasticizer per 100 parts by weight of polyvinyl chloride, said organic phosphate consisting essentially of one having the formula (C 6 H 5 ) x (m-C 2 H 5 C 6 H 4 ) y PO 4 , wherein x is 0, 1 or 2 and y is 1, 2 or 3, x + y being 3.
Claim 8
Dependent Claim
12 words
The process of claim 5 wherein said organic phosphate is tri(m-ethylphenyl) phosphate.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |