Hardenable mixture of substances, production method and use...

Details Hardenable mixture of substances, production method and use... Hardenable mixture of substances, production method and use...

2006-03-07

2006-03-07

Buttner, David J. (Department: 1712)

Coating processes

Applying superposed diverse coating or coating a coated base

Synthetic resin coating

C427S409000, C428S423100, C428S425600, C428S425800, C524S507000, C524S512000, C525S124000, C525S131000, C525S509000

Reexamination Certificate

active

07008673

ABSTRACT:
A curable composition comprising(A) constituents containing carbamate groups I:in-line-formulae description="In-line Formulae" end="lead"?—O—C(O)—NHR  (I)in-line-formulae description="In-line Formulae" end="tail"?in which R=a hydrogen atom or an alkyl, cycloalkyl or aryl group,(B) constituents containing carbamate-reactive groups, the equivalents ratio of carbamate-reactive groups in(B) to carbamate groups in (A) being >0.2,(C) adducts preparable from(c1) polyisocyanates and(c2) compounds II containing isocyanate-reactive functional groups:in whichR1and R2: independently of one another are hydrogen atoms or alkyl radicals;X and Y: oxygen atom, sulfur atom or a radical >N—R6, in which R6=aliphatic radical;R3: is an alkylene radical;R4and R5: are hydrogen atoms, isocyanate-reactive functional groups or R6;with the proviso that one group R4, R5or R6contains an isocyanate-reactive functional group or R4or R5is an isocyanate-reactive functional group and the other radicals R4, R5or R6—where present—contain no isocyanate-reactive groups;the molar ratio of (c1) to (c2) being chosen such that the adducts (C) contain in the molecule isocyanate groups; process for its preparation, and its use.

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