Patent · US Active

Use of vinyl acetate-copolymers as a shrinkage-reducing additive in cold-curing systems

US11434362B2 · kind B2 · utility

0Cited by

4References

21Claims

0Family size

Assignee

Wacker Chemie AG · DE

Inventors

Michael Tobias Zarka · Burghausen, DE
Karl Weber · Altötting, DE

Key dates

Filing date	Mar 3, 2017
Grant date	Sep 6, 2022
Priority date	—
Expiry date	Apr 6, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2810/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of vinyl acetate-copolymers as a shrinkage-reducing additive (low profile additive) in cold-curing systems for producing composite materials, characterized in that vinyl acetate-copolyerisate of 40 to 95 wt % vinyl acetate and 5 to 60 wt % of one or more co-monomers from the group containing vinyl esters of unbranched or branched carboxylic acids having 3 to 20 C-atoms and methacrylic acid esters and acrylic acid esters of unbranched or branched alcohols having 2 to 15 C-atoms are used, wherein the specifications in wt % relate to the total weight of the co-monomers and add up to 100 wt %.

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