Wrinkle finish powder coating with pattern control

Details Wrinkle finish powder coating with pattern control Wrinkle finish powder coating with pattern control

C - Chemistry, Metallurgy

09

D

C09D 5/28 (2006.01) C08G 59/62 (2006.01) C09D 5/03 (2006.01) C09D 7/12 (2006.01) C09D 163/00 (2006.01)

Patent

CA 2255533

An epoxy coating powder composition and a method for controlling the denseness of cured wrinkle finish patterns are provided by the use of a curing agent mixture comprising a blocked Lewis acid, methylenedisalicylic acid and a ring-substituted homolog thereof having the formula (see fig. I) wherein x and y are from 1 to 3, and R1 and R2 are, independently, hydrogen, alkyl groups having from 1 to 20 carbon atoms, aryl groups having from 6 to 10 carbon atoms, or aryl-substituted methylene groups; with the proviso that when x = y = 3, R1 and R2 ~ hydrogen; wherein the ratio of methylene disalicylic acid and the ring-substituted homolog is from about 50:50 to about 2:98 by weight.

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