Title: Polyurethane lacquer composition based on isophorone diisocyanate and diamine bis-aldime

Abstract: A polyurethane coating lacquer composition for substrates such as wood, metal, concrete, leather and plastics includes conventional solvents and I. the reaction product of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-isocyanate with branched chain polyesters having terminal hydroxyl groups based on mixtures of aliphatic and aromatic dicarboxylic acids, said polyester and said isocyanate being reacted without a catalyst at 10.degree.-35.degree.C. in such quantities that there are two isocyanate groups per --OH group, and 15-85 mol percent of the dicarboxylic acids are aliphatic and the remainder aromatic acids; and Ii. an aldime having the formula ##SPC1## Wherein each R is the same or different alkyl having 1 to 8, preferably 1 to 4 carbon atoms.

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Inventors: Schmitt, Karl (Herne, DT)
Disteldorf, Josef (Herne am Sengenhoff, DT)
Flakus, Werner (Recklinghausen, DT)

Application Number: 471724
Filing Date: 1974-05-20
Publication_date: 1976-01-13
Assignee: Veba-Chemie Aktiengesellschaft (Gelsenkirchen-Buer, DT)
Primary Class(es): 528/64 524/590, 528/75, 528/80, 528/81
Other Classes:
US Patent Ref:

3420800	Jan, 1969	Haggis	260/75.
3752786	Aug, 1973	Rossitto et al.	260/75.
3763079	Oct, 1973	Fryd	260/75.
3803098	Apr, 1974	Schmitt et al.	260/75.

Other Refs:
Primary Examiner: Cockeram, H. S.
Assistant Examiner:
Attorney: Burgess, Dinklage & Sprung