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Patent US3888909A successfully refreshed from Google Patents.
US3888909A
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Mixed mellitate compounds
Assignee: Henkel Corp
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Filing: 1973-11-20
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Granted: 1975-06-10
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Expires: 1993-11-20
Abstract
Abstract Mixed mellitate compounds useful as plasticizers for vinyl polymers, such as polyvinyl chloride homopolymers and copolymers, which have increased resistance to hydrocarbons have been prepared. The mixed mellitates of this invention are derived from trimellitic acid and trimellitic anhydride and contain two ester moieties derived from monofunctional alcohols and a third complex ester group obtained either by the reaction of a diol, a dibasic acid and a monofunctional alcohol or by the reaction of a diol and a monobasic acid.
Inventors
- 👤 Roland Hendrickriem
- 👤 Alfred Johannes Dieterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
7 words
A MIXED MELLITATE COMPOSITION OF THE FORMULA
Claim 2
Dependent Claim
7 words
A MIXED MELLITATE COMPOSITION OF THE FORMULA
Claim 3
Dependent Claim
18 words
The mixed mellitate composition of claim 1 derived from trimellitic acid or trimellitic anhydride and having the formula
Claim 4
Dependent Claim
43 words
The mixed mellitate composition of claim 2 wherein R1, R2 and R3 contain from 4 to 18 carbon atoms, A is an alkylene radical containing 2 to 4 carbon atoms and B is an alkylene radical containing from 6 to 20 carbon atoms.
Claim 5
Dependent Claim
54 words
The mixed mellitate composition of claim 3 wherein R1, R2 and R3 are radicals containing from 6 to 12 carbon atoms, A is derived from a diol selected from the group consisting of ethylene glycol, 1,3-propanediol, 1,2-propanediol, 1,3-butanediol, 1,4-butanediol and 2,3-butanediol and B is a bivalent radical derived from adipic acid or sebacic acid.
Claim 6
Dependent Claim
28 words
The mixed mellitate composition of claim 4 wherein R1, R2 and R3 are - C8H17 radicals, A is derived from 1,2-propanediol and B is derived from adipic acid.
Claim 7
Dependent Claim
28 words
The mixed mellitate composition of claim 4 wherein R1, R2 and R3 are - C8H17 radicals, A is derived from 1,3-butanediol and B is derived from adipic acid.
References Cited (Backward Citations)
US1786404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |