Cathodic electrocoating compositions

摘要

Disclosed herein are functionalized polymers comprising ethylene and substituted ethylene segments, which have been modified by epoxidation to enhance their crosslinking ability. These functionalized polymers are useful as film forming resins in cathodic electrocoating compositions. Also disclosed herein are aqueous dispersion compositions comprising the functionalized polymers and a process for coating various electrically conductive substrates.

主权项

1. A polymer comprising:
a) at least one ethylene segment of structure 1 b) at least one substituted ethylene segment of structure 2 and c) at least one substituted ethylene segment of structure 3 wherein: x and y are independently integers from 10 to 30,000, and z is an integer from 1 to 10; R is independently at least one member selected from the group consisting of: —(CH2)mN(CH3)2, —(CH2)n—(CH═CH)—(CH2)rCH3, —(CH2)vCH3, —(CH2)pOH, —(CH2)sN(CH2CH2OH)2, and —(CH2)tOPO3H2; R′ in structure 2 and R′ in structure 3 are independently H, —CqH2q+1, or —CqH2q−k; R″ is H or CH3; R′″ is H, methyl, or phenyl; q, r, s, t, m, n, v, and p are each independently selected from the integers from 1 to 20; and k is the number of saturated hydrocarbon rings in —CqH2q−k.