Patent ID: 8859098

Claim:
A carboxylic acid containing phosphonic acid adhesion promoter comprising: a compound of the formula where R , independently, is an alkyl having from 1 to about 18 carbon atoms; R 1 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms, R 2 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms, R 3 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms, R 4 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms, R 5 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms, and R 6 , independently, is H, or an alkyl comprising from 1 to about 6 carbon atoms; and wherein n, independently, is 0 or 1, and p, independently, is from about 1 to about 35.