| 摘要 |
Isocyanate-free coating compositions, capable of forming a durable coating under ambient conditions, are claimed comprising (A) at least one polymer, oligomer or combinations thereof selected from the group consisting of acrylic, urethane and urea polymers and oligomers having a number average molecular weight of at least about 100 and bearing at least two aziridinyl groups defined by the following structural formula: <IMAGE> wherein X represents O, S, NH, NR, wherein R represents an alkyl having from one to 12 carbon atoms, or higher, or phenyl, R1 represents (CH2)m1, m1 being an integer ranging from 1 to 3 and R2 represents H, CH3 or combinations thereof; and a member selected from the group consisting of (B) and (C) wherein (B) is at least one polymer, oligomer or combinations thereof selected from the group consisting of acrylic, urethane and urea polymers and oligomers having a number average molecular weight of at least about 100 and bearing at least two groups selected from epoxy groups defined by one of the following structural formulas: <IMAGE> <IMAGE> wherein R3 represents (CH2)m2, m2 being an integer ranging from 1 to 2; and wherein R3 represents (CH2)m2, m2 being an integer ranging from 1 to 2; and (C) is a polymer or oligomer represented by the following structural formula: <IMAGE> <IMAGE> <IMAGE> wherein R represents alkyl having from one to 20 carbon atoms and n=0-20. Processes for coating a substrate using such compositions are also claimed.
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