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Title: Low temperature curing corrosion resistant polyurethane coatings

Abstract: A low temperature curing polyurethane coating system is provided which enables the deposition of adherent corrosion resistant coatings having a desirable balance of hardness and flexibility by using a mixture of a solution copolymer of from 55-85% styrene with the balance of the copolymer consisting essentially of monoethylenically unsaturated hydroxy functional monomer, the copolymer being in solution in inert organic solvent, and an organic polyisocyanate. The polyisocyanate is kept separate from the copolymer solution until the desired liquid mixture is formed and used.


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Inventors: Sekmakas, Kazys (Chicago, IL, US)
Petrovich, Paul (Chicago, IL, US)

Application Number: 462564
Filing Date: 1974-04-19
Publication_date: 1976-01-20
Assignee: DeSoto, Inc. (Des Plaines, IL)
Primary Class(es): 525/123 528/59, 528/75
Other Classes:
US Patent Ref:
3245941Apr, 1966Mayer et al.260/77.
3376252Apr, 1968Peiser et al.260/77.

Other Refs:
Primary Examiner: Welsh, M. J.
Assistant Examiner:
Attorney: Dressler, Goldsmith, Clement & Gordon, Ltd.