TWO-COMPONENT COATING COMPOSITIONS CONTAINING SILANE ADHESION PROMOTERS

WIPO Patent Application WO2002051954

A3

The present invention relates to two-component coating compositions containing a) a polyisocyanate component, b) an isocyanate-reactive component and c) 0.1 to 20 wt.%, based on the weight of components a) and b), of a compound containing alkoxysilane groups and urea groups corresponding to the formula (I), wherein X represents identical or different organic groups which are inert to isocyanate groups below 100 DEG C, provided that at least on of these groups is an alkoxy group, Y represents a linear or branched alkylene group containing 1 to 8 carbon atoms, R represents the residue obtained by removing the isocyanate groups from a monoisocyanate or a polyisocyanate, R1 and R2 are identical or different and represent organic groups which are inert to isocyanate gropus at a temperature of 100 DEG C or less, R3 and R4 are identical or different and represent hydrogen or organic groups which are inert to isocyanate groups at a temperature of 100 DEG C or less, and n has a value of 1 to6. The present invention also relates to substrates coated with these coating compositions, in particular metal substrates.

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ROESLER RICHARD R
HERGENROTHER P RICHARD

PCT/US2001/047802

August 01, 2002

December 12, 2001

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BAYER AG (US)

B32B27/40; C08G18/08; C08G18/12; B32B27/18; C08G18/38; C08G18/40; C08G18/48; C08G18/79; C09D175/04; C09D175/08; C09D183/04; C23C26/00; (IPC1-7): C09D175/08; C08G18/28; C08G18/12

EP0872499A1	1998-10-21
EP0864575A2	1998-09-16
EP0949308A1	1999-10-13
EP0913402A1	1999-05-06

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