High solids polyurethane coatings

Details High solids polyurethane coatings High solids polyurethane coatings

1978-10-23

1981-05-12

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 18TN, 260 22R, 260 22CB, C09D 364, C09D 366, C09D 372

Patent

active

042670810

ABSTRACT:
Polyurethane resins are prepared by reacting a high solids polyol-containing component with an isocyanate-containing component. The polyol-containing component comprises the transesterification product of from about 70 to about 90 parts by weight castor oil and from about 5 to about 20 parts by weight pentaerythritol, where the solids content of the polyol-containing component is at least about 60% by weight. Preferably, the polyol-containing component also comprises from about 5 to about 30 parts by weight of a condensation agent having a molecular weight of less than about 400 and selected from the group consisting of polycarboxylic acids having up to about 4 carboxyl groups, methyl and ethyl esters of such polycarboxylic acids, and combinations thereof.

REFERENCES:
patent: 2577770 (1951-12-01), Kass et al.
patent: 2609349 (1952-09-01), Cass
patent: 2864780 (1958-12-01), Katz et al.
patent: 3316189 (1967-04-01), Adams
patent: 3318828 (1967-05-01), Seiner
patent: 3532651 (1970-10-01), Wooster
patent: 4010126 (1977-03-01), Kuzma
patent: 4014830 (1977-03-01), Rumfield
patent: 4071514 (1978-01-01), Ribbecke et al.

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