EP 4146714 A1 20230315 - POLYVINYL-ALCOHOL-STABILIZED (METH)ACRYLIC ACID ESTER POLYMERS
Title (en)
POLYVINYL-ALCOHOL-STABILIZED (METH)ACRYLIC ACID ESTER POLYMERS
Title (de)
POLYVINYLALKOHOL-STABILISIERTE (METH)ACRYLSÄUREESTERPOLYMERE
Title (fr)
POLYMÈRES D'ESTERS DE L'ACIDE (MÉTH)ACRYLIQUE STABILISÉS PAR DU POLY(ALCOOL VINYLIQUE)
Publication
Application
Priority
EP 2020062412 W 20200505
Abstract (en)
[origin: WO2021223849A1] The invention relates to polyvinyl-alcohol-stabilized (meth)acrylic acid ester polymers having particles sizes Dw of 100 to 900 nm, in the form of aqueous dispersions or in the form of powders that can be redispersed in water, characterized in that the (meth)acrylic acid ester polymers are based on a) 1 to 30 wt.% of one or more vinyl esters of carboxylic acids having 5 to 15 C atoms, b) 20 to 80 wt.% of one or more (meth)acrylic acid esters, the homopolymer of which has a glass transition temperature Tg of ≤ 20°C, c) 10 to 70 wt.% of one or more (meth)acrylic acid esters, the homopolymer of which has a glass transition temperature Tg of ≥ 50°C, and optionally one or more additional ethylenically unsaturated monomers, the specifications in wt.% relating to the total weight of the (meth)acrylic acid ester polymers.
IPC 8 full level
C08F 220/10 (2006.01); C08K 5/05 (2006.01); C08L 33/04 (2006.01)
CPC (source: EP US)
C04B 24/2623 (2013.01 - US); C04B 24/2641 (2013.01 - US); C04B 28/04 (2013.01 - US); C08F 263/04 (2013.01 - EP); C08L 33/10 (2013.01 - US); C09D 151/003 (2013.01 - EP); C04B 2111/00482 (2013.01 - US); C04B 2111/00637 (2013.01 - US); C04B 2111/00663 (2013.01 - US); C08L 2201/50 (2013.01 - US)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021223849 A1 20211111; CN 115515994 A 20221223; CN 115515994 B 20240213; EP 4146714 A1 20230315; US 2023202924 A1 20230629
DOCDB simple family (application)
EP 2020062412 W 20200505; CN 202080100582 A 20200505; EP 20725120 A 20200505; US 202017922033 A 20200505