Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2007-10-30
2007-10-30
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S004000, C524S007000, C524S008000, C524S247000
Reexamination Certificate
active
10684741
ABSTRACT:
Water-redispersible polymer powder compositions with accelerated-setting action based on homo- or copolymers of one or more monomers of vinyl esters of optionally branched C1-15alkylcarboxylic acids, (meth)acrylic esters of C1-15alcohols, vinylaromatics, olefins, dienes, and vinyl halides, one or more protective colloids, and optionally antiblocking agent(s), contain one or more setting-accelerants NR3, R2N—(CH2)n—NR2, or one or more singly or doubly NH2-terminated polyalkylene glycols having a C1-C6-alkylene group is/are present, where n=from 1 to 4, and where the radicals R are identical or different, and are hydrogen, a C1-C6-alkyl radical, or a C1-C6-hydroxyalkyl radical, where at least one radical R is a C1-C6-hydroxyalkyl radical, and wherein the setting-accelerants may optionally be present in the form of their salts.
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Szekely Peter
Wacker Polymer Systems GmbH & Co. KG
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