Patent · US Active

Aqueous polyacrylate copolymer dispersions with high OH group content

US9574078B2 · kind B2 · utility

0Cited by

3References

12Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

Marc Claudius Schrinner · Shanghai, CN
Heinz-Dietmar Gewiss · Meerbusch, DE
Thomas Stingl · Montabaur, DE
Martin Melchiors · Leverkusen, DE

Key dates

Filing date	Dec 20, 2012
Grant date	Feb 21, 2017
Priority date	—
Expiry date	Feb 24, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D175/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to aqueous secondary copolymer dispersion comprising a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising: (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid; (M3) hydroxy-functional, free-radically polymerizable monomers; (M4) carboxyl-functional, free-radically polymerizable monomers and (M5) hydroxyl- and carboxyl-free (meth)acrylic esters having C1 to C12 hydrocarbon radicals in the alcohol moiety and/or vinylaromatics, wherein the mixture further comprises polyols (PO) selected from the group of polyester polyols and/or polycarbonate polyols, the polyols having an average hydroxyl group functionality of at least 2. The invention also relates to a method for the production of such a dispersion, to the use of the dispersion as a coating and as a binder in 2K polyurethane coatings.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.