Polyurethane powder coating compositions which yield a matte sur

Details Polyurethane powder coating compositions which yield a matte sur Polyurethane powder coating compositions which yield a matte sur

1988-02-09

1988-11-01

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C08G 1880

Patent

active

047821280

ABSTRACT:
Polyurethane powder coating compositions which yield a matte surface after setting. The principal means of achieving matte surfaces with powder coating compositions is by adding fillers. These additives are detrimental to the coating properties. The known binder systems based on cycloaliphatic diisocyanate adducts which yield matte surfaces after setting are either of a complex nature or are inherently costly to prepare. These disadvantages are avoided if the polyurethane powder coating compositions are comprised of OH-group-containing polymers, and trans-1,4-cyclohexanediisocyanate (CHDI) adducts blocked with epsilon-caprolactam.

REFERENCES:
patent: 4395529 (1983-07-01), Ponandiker et al.
patent: 4528355 (1985-07-01), Gras et al.

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