公开(公告)号：US20230312972A1

公开(公告)日：2023-10-05

申请号：US18022766

申请日：2021-08-26

Applicant: Arkema Inc.

Inventor： Yuting LI ,  Robert P. EISENHARDT ,  Wenjun WU ,  Michael DREWERY ,  Jeffrey P. ARDENT

IPC: C09D147/00 ,  C08F220/10 ,  C08F2/44

CPC classification number: C09D147/00 ,  C08F220/10 ,  C08F2/44 ,  C08F2438/00

Abstract: Multi-stage polymeric particles are prepared as a water-borne emulsion, including a first-formed lower Tg soft stage and a second-formed higher Tg hard stage. The polymeric particles include, in both stages: one or more free radical polymerizable ethylenically unsaturated monomers; 0 to 3 wt % of free radical polymerizable surfactant monomer; 0 to 4 wt % of free radical poly-merizable monomer having a beta dicarbonyl functionality; 0 to 2 wt % of monomer selected from acrylamide, diacetone acrylamide, 2-hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylates, and hydroxybutyl (meth)acrylates and mixtures thereof; 0-1.9 wt % of free radical polymerizable polyethylenically unsaturated monomers; 0.1 to 1.9% of free radical polymerizable monomer containing phosphorus acid or a salt thereof in the first stage, and 0.1 to 5 wt % of a free radical polymerizable monomer containing phosphorus acid or salt thereof in the second stage. Multi-stage polymeric-particle-based-resin is formulated into direct to metal coatings, having good block, corrosion and excellent humidity resistance.

公开(公告)号：US20180346735A1

公开(公告)日：2018-12-06

申请号：US15777690

申请日：2016-11-30

Applicant: Arkema Inc.

Inventor： Wenjun WU ,  Karen L. WALLACE ,  Jeanne L. STALLINGS

IPC: C09D5/02 ,  C08F220/12 ,  C09D133/14

CPC classification number: C08F220/14 ,  C09D143/02 ,  C08F2220/1825 ,  C08F2220/1808 ,  C08F230/02

Abstract: Emulsion polymers and coating compositions made therefrom that exhibit exceptional roller stability and stain resistance to both hydrophilic and hydrophobic stains, without sacrificing scrub resistance. The emulsion polymers include, as polymerized units formed at a pH between 3 and 9: a) at least one nonionic or anionic unsaturated monomer in an amount ranging between about 78 wt. % to less than 100 wt. % based on the overall weight of the polymer composition b) one or more strong acid monomer in an amount ranging from about 0.01 wt. % to 2 wt. % based on the overall weight of the polymer composition; and c) at least one lower alkyl acrylate monomer in an amount ranging between about 1 wt. % to 20 wt. % based on the overall weight of the polymer composition.