POLYACRYLATE-BASED GRAFT COPOLYMER
    1.
    发明申请

    公开(公告)号:WO2021121795A1

    公开(公告)日:2021-06-24

    申请号:PCT/EP2020/081864

    申请日:2020-11-12

    Abstract: The invention relates to a polyacrylate-based graft copolymer comprising a polyacrylate backbone and polyolefin side chains grafted thereon, wherein the graft copolymer is prepared by reacting a first polymer and a second polymer, wherein the first polymer comprises recurring units having the structure (I) and optionally further recurring units having the structures (II): Formulae (I), (II) wherein R1, R3 is H or CH3 and R2 is a hydrocarbon moiety comprising 1 to 6 carbon atoms, one of R4 and R5 is H and the other one of R5 and R4 is COOR2, C≡N, Cl, or an aliphatic or aromatic hydrocarbon moiety optionally containing one or multiple hetero atom functionalities, wherein R2 in (I) is different from R2 in (II) and the second polymer is a functionalized polyolefin having one or multiple hydroxyl functional groups, wherein the graft copolymer is formed by transesterification of the COOR2 group of (I) or (II) with the hydroxyl functional group of the functionalized polyolefin.

    STIMULI RESPONSIVE DISPERSANTS FOR ARCHITECTURAL COATINGS

    公开(公告)号:WO2021016337A1

    公开(公告)日:2021-01-28

    申请号:PCT/US2020/043045

    申请日:2020-07-22

    Abstract: A dispersing agent or dispersant formed as a block copolymer for use in surface coating compositions, such as architectural paint compositions, that can alter its properties as a result of changes in environmental conditions is provided. These stimuli -responsive copolymers are synthesized with properties that can be controlled based on number of blocks and block length and/or as a function of pH and temperature. The addition of these copolymers to coating compositions including other additives, such as pigments and/or fillers, can decrease settling rate, control viscosity, and control interfacial activity of the additives in the compositions.

Patent Agency Ranking