Granted Patent B2

US 8,288,464 · App. 13/323,920 · Granted Oct 16, 2012

Abstract

Claims (9)

1. A compound having formula (I)

wherein R 1 is methyl or ethyl; R 2 is hydrogen, methyl, CH 2 C(NH 2 )(R 1 )(CH 2 OH) or R 2 groups combine to form a difunctional C 2 -C 6 alkyl group; and X is a difunctional group selected from the group consisting of C 2 -C 20 alkyl, C 5 -C 20 cycloalkyl, C 6 -C 10 aryl, C 8 -C 20 aryl alkyl, C 4 -C 20 heteroalkyl or C 10 -C 20 aryl heteroalkyl.

2. The compound of claim 1 in which X is C 3 -C 8 alkyl or C 4 -C 8 heteroalkyl.

3. The compound of claim 2 in which R 2 is CH 2 C(NH 2 )(R 1 )(CH 2 OH).

4. The compound of claim 3 in which X is a C 4 -C 8 heteroalkyl group having at least one nitrogen atom, and a CH 2 C(NH 2 )(R 1 )(CH 2 OH) group is attached to a heteroalkyl nitrogen atom.

5. A method for adjusting pH in a coating composition; said method comprising adding to a coating composition having a pH below 7 a sufficient amount of a compound of formula (I)

wherein R 1 is methyl or ethyl; R 2 is hydrogen, methyl, CH 2 C(NH 2 )(R 1 )(CH 2 OH) or R 2 groups combine to form a difunctional C 2 -C 6 alkyl group; and X is a difunctional group selected from the group consisting of C 2 -C 20 alkyl, C 5 -C 20 cycloalkyl, C 6 -C 10 aryl, C 8 -C 20 aryl alkyl, C 4 -C 20 heteroalkyl or C 10 -C 20 aryl heteroalkyl;

to produce a final pH from 7.5 to 9.5.

6. The method of claim 5 in which X is C 3 -C 8 alkyl or C 4 -C 8 heteroalkyl.

Assignments (7)