US3976616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(phosphate) plasticizers and plasticized compositions
Assignee: FMC Corp
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Filing: 1974-12-24
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Granted: 1976-08-24
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Expires: 1994-12-24
Abstract
Abstract Complex phosphates are used as plasticizers for thermoplastic polymers, especially for polyvinyl chloride.
Inventors
- 👤 Malcolm Combey
- 👤 Raymond Nicolson Birrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/521; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/093; C07F9/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
A composition comprising a vinyl chloride polymer or copolymer and as plasticizer therefor 5 to 100% by weight of the polymer of a bis-phosphate compound of the formula ##EQU8## wherein the R, R 1 , R 3 and R 4 groupings are the same or different and each may be an alkyl radical containing from 1 to 15 carbon atoms, phenyl or alkylphenyl radical of 6 to 15 carbon atoms such that R, R 1 , R 3 and R 4 are not all alkyl radicals nor are they all phenyl or alkylphenyl containing 6 to 8 carbon atoms, and R 2 is a straight, branched or cyclic alkylene containing from 2 to 6 carbon atoms or a mono-, di- or trioxaalkylene of 4 to 20 carbon atoms, or a mixture of said compounds.
Claim 2
Dependent Claim
134 words
A composition comprising a vinyl chloride polymer or copolymer and as plasticizer therefor 5 to 100% by weight of the polymer of a bis-phosphate compound of the formula ##EQU8## wherein the R, R 1 , R 3 and R 4 groupings are the same or different and each may be an alkyl radical containing from 1 to 15 carbon atoms, phenyl or alkylphenyl radical of 6 to 15 carbon atoms such that R, R 1 , R 3 and R 4 are not all alkyl radicals nor are they all phenyl or alkylphenyl containing 6 to 8 carbon atoms, and R 2 is a straight, branched or cyclic alkylene containing from 2 to 6 carbon atoms or a mono-, di- or trioxaalkylene of 4 to 20 carbon atoms, or a mixture of said compounds.
Claim 3
Dependent Claim
56 words
A composition according to claim 1 wherein the plasticizer is a bis-phosphate compound wherein R, r 1 , r 3 and R 4 are methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, n-hexyl, n-octyl, 2-ethylhexyl, n-dodecyl, phenyl, tolyl, xylyl, isopropylphenyl, butylphenyl or diisopropylphenyl, and R 2 is ethylene, 1,2-propylene, 1,3-propylene,1,3-butylene, 1,4-butylene, 2,2-dimethyl-1,3-propylene, hexamethylene, cyclohexylene, 3-oxa-1,5-pentylene, 3,6-dioxa-1,8-octylene or 3,6,9-trioxa-1,11-undecylene.
Claim 4
Dependent Claim
37 words
A composition according to claim 1 wherein the plasticizer is a bis-phosphate compound wherein R, r 1 , r 3 and R 4 are a mixture of phenyl and isopropylphenyl, and R 2 is 3-oxa-1,5-pentylene or 3,6-dioxa-1,8-octylene.
Claim 5
Dependent Claim
32 words
A composition according to claim 1 wherein the plasticizer is a bis-phosphate compound wherein R and R 1 are 2-ethylhexyl, R 3 and R 4 are phenyl, and R 2 is 3-oxa-1,5-pentylene.
Claim 6
Dependent Claim
32 words
A composition according to claim 1 wherein the plasticizer is a bis-phosphate compound wherein R and R 3 are 2-ethylhexyl, R 1 and R 4 are phenyl, and R 2 is 3-oxa-1,5-pentylene.
Claim 7
Dependent Claim
31 words
A composition according to claim 1 wherein the plasticizer is a bis-phosphate compound wherein R, r 1 and R 3 are phenyl, R 4 is 2-ethylhexyl, and R 2 is 3-oxa-1,5-pentylene
Claim 8
Dependent Claim
12 words
A composition according to claim 1 wherein the polymer is poly(vinyl chloride).
Claim 9
Dependent Claim
23 words
A composition according to claim 1 wherein the plasticizer is present in an amount from 30 to 70% by weight of the polymer.
References Cited (Backward Citations)
CA699333A
Cited
US2782128A
Cited
GB745161A
Cited
US3099676A
Cited
US3288891A
Cited
US3639318A
Cited
US3801526A
Cited
US3859395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |