Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-12-22
1995-07-25
Sellers, Robert E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525173, 525176, C08L 6702
Patent
active
054363110
ABSTRACT:
A powdered thermosetting composition comprising as binder a mixture of a linear carboxyl group-containing polyester and a glycidyl group-containing acrylic copolymer is described. The polyester has an acid number of 20 to 50 mg KOH/g and the acrylic copolymer is obtained from 5% to 30% by weight of glycidyl acrylate or glycidyl methacrylate and 70% to 95% by weight of methyl methacrylate, whereby up to 25% by weight of the methyl methacrylate can be replaced by another vinyl monomer, said acrylic copolymer having a number-average molecular weight (Mn) of from about 4,000 to about 10,000. This composition is particularly useful for the preparation of powdered paints and varnishes which can be applied with an electrostatic spray gun and cured at a temperature of from about 160.degree. to 210.degree. C. to produce matte finishes of excellent quality.
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Kansai Paint, Central Patents Index, Basic Abstracts Journal, Week 7917 AN70-32542B JP-A-54036339.
Baudour Michel
Hoebeke Jean-Marie
Loutz Jean-Marie
Maetens Daniel
Sellers Robert E.
U C B S.A.
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