Reaction product of mixed uretdiones and a disecondary diamine
First Claim
1. A polyaddition product, containing uretdione groups, which is prepared by reacting (A) a diisocyanate mixture which contains uretdione groups and comprises (1) at least 40 mol. % to not more than 80 mol. % of isophorone diisocyanate containing uretdione groups and (2) not more than 60 mol. % and not less than 20 mol. % of hexamethylene diisocyanate containing uretdione groups, the mol. % amounts based on the total molar amount of diisocyanate mixture (A), with (B) a disecondary diamine, in an NCO/NH ratio of 1:
- 0.5-1;
0.9 at room temperature to 60°
C. in a solvent which is inert towards isocyanates.
3 Assignments
0 Petitions
Accused Products
Abstract
A Polyaddition product, containing uretdione groups, which is obtainable by reaction of (A) a diisocyanate mixture which contains uretdione groups and comprises (1) at least 40 mol % to not more than 80 mol % of isophorone diisocyanate containing uretdione groups and (2) not more than 60 mol % and not less than 20 mol % of hexamethylene diisocyanate containing uretdione groups, with (B) a disecondary diamine, in an NCO/NH ratio of 1:0.5 to 1:0.9 at room temperature to 60° C. in a solvent which is inert towards isocyanates.
16 Citations
20 Claims
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1. A polyaddition product, containing uretdione groups, which is prepared by reacting (A) a diisocyanate mixture which contains uretdione groups and comprises (1) at least 40 mol. % to not more than 80 mol. % of isophorone diisocyanate containing uretdione groups and (2) not more than 60 mol. % and not less than 20 mol. % of hexamethylene diisocyanate containing uretdione groups, the mol. % amounts based on the total molar amount of diisocyanate mixture (A), with (B) a disecondary diamine, in an NCO/NH ratio of 1:
- 0.5-1;
0.9 at room temperature to 60°
C. in a solvent which is inert towards isocyanates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20)
- 0.5-1;
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17. A process for the preparation of a polyaddition product, containing uretdione groups, which comprises reacting (A) a diisocyanate mixture which contain s uretdione groups and comprises (1) at least 40 mol % to not more than 80 mol % of isophorone diisocyanate containing uretdione groups and (2) not more than 60 mol % and not less than 20 mol % of hexamethylene diisocyanate containing uretdione groups, the mol. % amounts based on the total molar amount of diisocyanate mixture (A), with (B) a disecondary diamine, in an NCO/NH ratio of 1:
- 0.5-1;
09 at room temperature to 60°
C. in a solvent which is inert towards isocyanates, and optionally further reacting the polyaddition product thus obtained, completely or partly, with at least one blocking agent selected from the group consisting of monoalcohols and monoamines.
- 0.5-1;
Specification