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US 4,119,595 AGranted
Low-temperature epoxy baking compositions
AssigneeShell Oil Company
InventorsRonald S. Bauer, John A. Lopez
Life of this patent
Estimating the term…
Abstract
Stable, high-solids, low-temperature baking compositions are prepared by first reacting an epoxy resin with a polymeric fatty acid, and then reacting the resulting condensate with more than 2% by weight of a strong acid, and adding a curing amount of an amino-containing resin.
Claims13
A stable, low-temperature baking composition prepared by the process which comprises:
- 1. reacting about 1.0 chemical equivalents of an epoxy resin possessing more than one 1,2-epoxide group with from about 0.1 to about 1.0 chemical equivalents of a polymeric fatty acid,
- 2. reacting the resulting condensate with more than 2% by weight based on the condensate of a strong acid selected from the group consisting of para-toluene sulfonic acid, hydrochloric acid, sulfuric acid and phosphoric acid, for a period from about 2 hours to about 5 days at a temperature from about room temperature to about 250.degree. C., and
- 3. adding a curing amount of an amino-plast resin.
Dependencies are inferred from the claim text.