Polyurethanes suitable as coating materials
AssigneeBASF SE
InventorKarl Haberle
Life of this patent
Estimating the term…
Abstract
Polyurethanes suitable as coating materials or components thereof are essentially composed of A) a.sub.1) from 40 to 100 mol % of bis(4-isocyanatocyclohexyl)methane, the trans/trans content of (a.sub.1) being up to 18 mol %, based on the amount of (a.sub.1), and a.sub.2) from 0 to 60 mol % of further polyfunctional aliphatic, cycloaliphatic, araliphatic or aromatic isocyanates of 4 to 30 carbon atoms and B) b.sub.1) from 20 to 100 mol % of a nonaromatic diol and b.sub.2) from 0 to 80 mol % of further polyfunctional compounds having reactive groups which can react with the isocyanate groups (A), the reactive groups being hydroxyl or primary or secondary amino groups.
Claims11
A polyurethane consisting essentially of
- A)
- a.sub.1) from 40 to 100 mol % of bis(4-isocyanatocyclohexyl)methane, the trans/trans content of (a.sub.1) being up to 18 wt, based on the amount of (a.sub.1), and
- a.sub.2) from 0 to 60 mol % of further polyfunctional aliphatic, cycloaliphatic, araliphatic or aromatic isocyanates of 4 to 30 carbon atoms
- and
- B)
- b.sub.1) from 20 to 100 mol % of a nonaromatic diol and
- b.sub.2) from 0 to 80 mol % of further polyfunctional compounds having reactive groups which can react with the isocyanate groups (A), the reactive groups being hydroxyl or primary or secondary amino groups.
Dependencies are inferred from the claim text.