公开(公告)号：US11084953B2

公开(公告)日：2021-08-10

申请号：US16750049

申请日：2020-01-23

Applicant: Allnex Netherlands B.V.

Inventor： Jaap Michiel Akkerman ,  Dirk Emiel Paula Mestach ,  Wincenty Lambertus Stanislaw Pilaszek ,  Rob Adolphs

IPC: C09D133/12 ,  C08F220/18 ,  C08F220/28 ,  C08F283/00 ,  C08G18/34 ,  C08G18/62 ,  C08G18/69 ,  C08G18/75 ,  C09D133/14 ,  C09D151/08 ,  C09D175/14 ,  C08G18/08

Abstract: The invention relates to a method of making an aqueous coating composition comprising a blend of at least a first aqueous polymer dispersion and a second aqueous polymer dispersion comprising a film-forming second polymer wherein the first aqueous polymer dispersion comprises a first polymer having a number average molecular weight, Mn, of from 2000 to 120000, an acid value of 30 to 150 mg KOH/g, a glass transition temperature Tg of at least 20° C. as calculated with the Fox formula, and an ethylene-oxide content of from 1 to 20 wt %, the method comprising blending an aqueous dispersion of the first polymer having a solids content of 25 to 50 wt % and a pH of 4.5 to 8.0 with an aqueous dispersion of the second polymer having a solids content of 25 to 55 wt % and a pH of 4.5 to 8.0.

公开(公告)号：US10047232B2

公开(公告)日：2018-08-14

申请号：US15110752

申请日：2015-01-16

Applicant: ALLNEX NETHERLANDS B.V.

Inventor： Jaap Michiel Akkerman ,  André Roelofs ,  Richard Van Der Horst ,  Robert Van Egmond

IPC: C08F226/00 ,  C09D7/12 ,  C09D7/65 ,  C09D5/02 ,  C08F220/54 ,  C08F220/56 ,  C09D133/26 ,  C09D139/06 ,  C09D175/04 ,  C08L75/04 ,  C08L101/12 ,  C08G18/65 ,  C08G18/69 ,  C08G18/75 ,  C08G18/08 ,  C08G18/34 ,  C08G18/36 ,  C08F220/12 ,  C08F226/10 ,  C09D133/00

CPC classification number: C09D7/65 ,  C08F220/12 ,  C08F220/54 ,  C08F220/56 ,  C08F226/10 ,  C08G18/0823 ,  C08G18/348 ,  C08G18/36 ,  C08G18/6541 ,  C08G18/6547 ,  C08G18/6576 ,  C08G18/69 ,  C08G18/755 ,  C08L75/04 ,  C08L101/12 ,  C08L2201/54 ,  C09D5/022 ,  C09D133/00 ,  C09D133/26 ,  C09D139/06 ,  C09D175/04 ,  C08L39/06 ,  C08F2220/1808 ,  C08F220/14 ,  C08F220/58 ,  C08F220/06 ,  C08F226/06 ,  C08F220/20

Abstract: The invention relates to an aqueous coating composition comprising a film-forming first polymer and a second polymer for improving the open time, the wet edge time, adhesion and/or hardness of the resulting coating. The invention further relates to said novel second polymer, its use in coating compositions for improving the open time and coalescence. The water soluble second polymer is an addition polymer comprising 25-95 wt % specific non-ionic hydrophilic monomers A and 5-75 wt % of hydrophobic monomers B which second polymer is sparingly water soluble and a solution of only said second polymer in water has a substantially Newtonian flow behavior in a wide solid contents range.