Polyetheramine macromonomers comprising two neighboring hydroxyl groups and their use for producing polyurethanes
View Patent ↗The object of the invention are compounds of the formula (2) wherein R 1 is H, methyl or ethyl, R 2 is C 1 - to C 4 alkyl, A is a C 2 - to C 4 alkylene group, m is number from 10 to 400, n is 1, 2, 3, 4, or 5, a method for their production and their use in the production of polyurethane prepolymers.
1. A compound of formula 2
wherein
R 1 is H, methyl or ethyl,
R 2 is methyl
A is a C 2 - to C 4 -alkylene group,
m is a number from 1 to 400
n is 1, 2, 3, 4 or 5.
2. A compound as claimed in claim 1 , in which at least 50 mol % of the radicals (A-O) are oxyethylene radicals —CH 2 —CH 2 —O—.
3. A compound as claimed in claim 2 , in which any non-oxyethylene radicals (A-O) are oxypropylene radicals —CH(CH 3 )—CH 2 —O—.
4. A compound as claimed in claim 1 , in which A is an ethylene group and m is a number from 3 to 300.
5. A compound as claimed in claim 1 , in which R 1 is H.
6. A compound as claimed in claim 1 , in which -(A-O) m —R 2 is an oxyalkylene group of the formula
—(CH 2 —CH 2 —O) b —(CH(CH 3 )—CH 2 —O) a —R 2
in which
a is a number from 0 to 300,
b is a number from 3 to 300, and
R 2 is as defined in claim 1 .