Lacquer for coatings protecting against stone chipping, a proces

Details Lacquer for coatings protecting against stone chipping, a proces Lacquer for coatings protecting against stone chipping, a proces

1984-10-04

1986-08-19

Cockeram, Herbert S.

Coating processes

With post-treatment of coating or coating material

Heating or drying

428336, 4284231, 4284258, 525124, 525403, 525440, 528 45, B05D 302, B32B 2700, C08G 1880

Patent

active

046069470

ABSTRACT:
Lacquer for coatings protecting against stone chipping, containing pigments, fillers, binders consisting of a mixture of film forming, hydroxyl-containing polyesters and aliphatic and/or cycloaliphatic polyisocyanates which are blocked with acetoacetic acid alkyl esters and have an average functionality of at least 2.5, organic solvents and conventional lacquer additives, which lacquer contains certain polyesters having an average hydroxyl functionality of from 2.5 to 6 and a hydroxyl content of from 2 to 6% by weight and containing from 15 to 50% by weight (aliphatic content) of aliphatic groups which have at least 4 to 20 carbon atoms in an unbranched chain, the proportion by weight of this aliphatic group content in the polyester to the benzene ring content in the polyester, calculated as the sum of the weight of carbon atoms of the benzene rings and of the hydrogen atoms attached to these carbon atoms (aromatic content) is from 1 to 2.5, and a process for its preparation and its use.

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