US3706684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traffic paint compositions
Assignee: Shell USA Inc
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Filing: 1971-06-11
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Granted: 1972-12-19
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Expires: 1991-06-11
Abstract
Abstract Rapid-dry, one-package, epoxy traffic paint compositions which require no curing agent and which exhibits reduced dirt pick-up comprise (1) an organic solvent, (2) a pigment and (3) a condensation product comprising near equal molar ratios of a polyepoxide and a dimer acid wherein the polyepoxide is a blend of two separately prepared glycidyl polyethers of a polyhydric phenol, one a liquid, the other a solid.
Inventors
- 👤 John A Lopez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:17
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/004; C08; C08G; C08G59/00; C08G59/02; C08G59/12; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/40; C08G59/42; C08G59/4215
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
A composition as in claim 1 wherein the dimer acid comprises an acid or acids derived from acids of the general formula R-CH CH-CH CH-R1 wherein R is the radical -R2COOH, R1 is selected from the group consisting of R and R2, and R2 is an alkyl group, said acid having from 12 to 20 carbon atoms.
Claim 2
Dependent Claim
27 words
A compositions as in claim 1 wherein the reaction is performed in the presence of from 0.05 to 3 percent by weight of the reactants of triphenylphosphine.
Claim 3
Dependent Claim
111 words
A composition as in claim 1 wherein the condensate is prepared by reacting from 0.80 to 0.85 chemical equivalents of the dimer acid with 1.0 chemical equivalents of the blend of the two separately prepared glycidyl polyethers, one consisting essentially of about 0.90 to 0.98 chemical equivalents of a liquid glycidyl polyether of 2,2-bis(4-hydroxyphenyl)propane having an average molecular weight of about 350 and an epoxide equivalent weight from about 185 to about 195 and the other consisting essentially of about 0.02 to 0.10 chemical equivalents of a solid glycidyl polyether of 2,2-bis(4-hydroxyphenyl)propane having an average molecular weight of about 900 and an epoxide equivalent weight of from about 425 to 550.
References Cited (Backward Citations)
US3446762A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |