POWDERED COATING COMPOSITION WITH LOW LUSTRE FOR COATING ROLL MATERIALS Russian patent published in 2011 - IPC C09D167/00 C09D5/03 

FIELD: chemistry.

SUBSTANCE: composition contains components (A) and (B); component (A) contains 5-95 wt % base of powdered coating (A) from one or more polyester resins with saturated carboxyl functionality, acid number from 5 to 25 KOH/g, a hardener consisting of triglycidyltrimellitate (TML), diglycidylterephthalate (DGT) and glycidyl ethers based on aliphatic or cycloaliphatic epoxy resins and, optionally, a coating additive and, optionally, pigments and/or filling materials. The composition contains a component (B) containing 95-5 wt % powdered coating base from one or more polyester resins with saturated carboxyl functionality, acid number from more than 25 to 100 KOH/g, a hardener - triglycidyltrimellitate (TML), diglycidylterephthalate (DGT) and glycidyl ethers based on aliphatic or cycloaliphatic epoxy resins and, optionally, a coating additive pigments and/or filling materials. Described also is a method of preparing the powdered coating composition.

EFFECT: invention enables to obtain a coating with high flexibility, good stability and desired level of lustre.

14 cl, 2 tbl, 2 ex