公开(公告)号：US11111329B2

公开(公告)日：2021-09-07

申请号：US16822292

申请日：2020-03-18

Applicant: Rohm and Haas Company

Inventor： Matthew Carter ,  Ralph C. Even ,  Andrew Hejl

IPC: C08F218/08 ,  C08L31/04

Abstract: The present invention relates to a method comprising the steps of a) contacting under emulsion polymerization conditions vinyl acetate; a cyclic ketene acetal monomer; and a monoethylenically unsaturated acid monomer or a salt thereof; to form an aqueous dispersion of copolymer particles comprising structural units of vinyl acetate, the cyclic ketene acetal, and the monoethylenically unsaturated acid monomer or a salt thereof; wherein the cyclic ketene acetal monomer is characterized by following structure: where n and the R groups are as defined herein. The method of the present invention provides a water-borne dispersion that is substantially free of volatile organic solvents and that provides a readily degradable polymer that is useful, for example, in the manufacture of biodegradable packaging products.

公开(公告)号：US12264213B2

公开(公告)日：2025-04-01

申请号：US17632073

申请日：2020-08-10

Applicant: Dow Global Technologies LLC ,  Dow Silicones Corporation ,  Rohm and Haas Company

Inventor： Hilda G. Buss ,  Matthew Carter ,  Ralph C. Even ,  Bryan L. McCulloch ,  Jodi Mecca ,  Richard P. Woodworth ,  Fanwen Zeng

IPC: C08F220/18 ,  C07F7/08 ,  C08F2/22 ,  C08F220/06 ,  C08F220/14 ,  C08F230/08

Abstract: The present invention relates to a method for preparing an aqueous dispersion of acrylate-siloxane copolymer particles as described herein. The polymer particles comprise structural units of an acrylate monomer; an acid monomer; and a siloxane acrylate monomer of formula I: where R, R1, R2, Y and x are as defined herein. The method provides an efficient way to prepare a high solids content aqueous dispersion of siloxane-acrylate hybrid copolymers with efficient incorporation of siloxane acrylate monomers, low residual monomer, and low generation of unwanted coagulum. The dispersion is useful for forming coatings with improved hydrophobicity, stain resistance, and aesthetic/haptic properties compared with conventional all-acrylic compositions.

公开(公告)号：US20240384086A1

公开(公告)日：2024-11-21

申请号：US18692564

申请日：2022-11-01

Applicant: Rohm and Haas Company ,  Dow Global Technologies LLC

Inventor： Ligeng Yin ,  Matthew Carter ,  Stephanie Barbon ,  Wen-Shiue Young ,  James Defelippis

IPC: C08L33/08 ,  C08F220/18

Abstract: The present invention relates to a composition comprising an aqueous solution of a copolymer of (meth)acrylic acid and a cyclic ketene acetal monomer. The copolymer is useful as a biodegradable dispersant.

公开(公告)号：US20220275123A1

公开(公告)日：2022-09-01

申请号：US17632048

申请日：2020-08-05

Applicant: Dow Global Technologies LLC ,  Dow Silicones Corporation ,  Rohm and Haas Company

Inventor： Hilda G. Buss ,  Matthew Carter ,  Ralph C. Even ,  Matthew Jeletic ,  Nanguo Liu ,  Bryan L. McCulloch ,  Jodi Mecca ,  Muhunthan Sathiosatham ,  Richard P. Woodworth ,  Fanwen Zeng

IPC: C08F220/18 ,  C08F220/14

Abstract: The present invention relates to a composition comprising an aqueous dispersion of acrylate-siloxane copolymer particles comprising structural units of an acrylate monomer; an acid monomer; and a siloxane acrylate monomer of formula I: where R, R1, R2, Y and x are as defined herein. The composition has a high solids content, a low concentration of siloxane acrylate monomer and low coagulum levels. The composition is useful for forming coatings with improved hydrophobicity, stain resistance, and aesthetic/haptic properties compared with conventional all-acrylic compositions.

公开(公告)号：US20240392052A1

公开(公告)日：2024-11-28

申请号：US18692612

申请日：2022-11-01

Applicant: Rohm and Haas Company ,  Dow Global Technologies LLC

Inventor： Ligeng Yin ,  Matthew Carter ,  Stephanie Barbon ,  Wen-Shiue Young ,  James Defelippis

IPC: C08F220/18

Abstract: The present invention relates to a method for preparing a copolymer comprising structural units of acrylic acid and a cyclic ketene acetal monomer. The copolymer is useful as a biodegradable dispersant.

公开(公告)号：US20230096043A1

公开(公告)日：2023-03-30

申请号：US17796119

申请日：2021-02-10

Applicant: Dow Global Technologies LLC ,  Dow Silicones Corporation ,  Rohm and Haas Company

Inventor： Hilda G. Buss ,  Matthew Carter ,  Ralph C. Even ,  Jason S. Fisk ,  Matthew Jeletic ,  Tzu-Chi Kuo ,  Tian Lan ,  Nanguo Liu ,  Bryan L. McCulloch ,  Jodi Mecca ,  Arash R. Nowbahar ,  Tanvi S. Ratani ,  Muhunthan Sathiosatham ,  Richard P. Woodworth ,  Fanwen Zeng

IPC: C08F230/08 ,  C08F2/30 ,  C08F2/26

Abstract: The present invention is a composition comprising an aqueous dispersion of copolymer particles comprising structural units of a) an acrylate monomer; b) an acid monomer; and c) a siloxane-acrylate monomer of formula I: where R, R1, R2, Y and x are defined herein. The composition, which also comprises a nonionic and anionic surfactant as described herein, is useful in a variety of applications ranging from architectural coatings to personal care products.

公开(公告)号：US20220275124A1

公开(公告)日：2022-09-01

申请号：US17632073

申请日：2020-08-10

Applicant: Dow Global Technologies LLC ,  Dow Silicones Corporation ,  Rohm and Haas Company

Inventor： Hilda G. Buss ,  Matthew Carter ,  Ralph C. Even ,  Bryan L. McCulloch ,  Jodi Mecca ,  Richard P. Woodworth ,  Fanwen Zeng

IPC: C08F220/18 ,  C08F220/14

Abstract: The present invention relates to a method for preparing an aqueous dispersion of acrylate-siloxane copolymer particles as described herein. The polymer particles comprise structural units of an acrylate monomer; an acid monomer; and a siloxane acrylate monomer of formula I: where R, R1, R2, Y and x are as defined herein. The method provides an efficient way to prepare a high solids content aqueous dispersion of siloxane-acrylate hybrid copolymers with efficient incorporation of siloxane acrylate monomers, low residual monomer, and low generation of unwanted coagulum. The dispersion is useful for forming coatings with improved hydrophobicity, stain resistance, and aesthetic/haptic properties compared with conventional all-acrylic compositions.

公开(公告)号：US20200325260A1

公开(公告)日：2020-10-15

申请号：US16822256

申请日：2020-03-18

Applicant: Rohm and Haas Company

Inventor： Matthew Carter ,  James DeFelippis ,  Ralph C. Even ,  Andrew Hejl

IPC: C08F218/08 ,  C08L31/04

Abstract: The present invention relates to a composition comprising an aqueous dispersion of copolymer particles comprising structural units of vinyl acetate, a cyclic ketene acetal monomer, and a monoethylenically unsaturated acid monomer, or a salt thereof; wherein the cyclic ketene acetal monomer is characterized by following structure: where n and the R groups are as defined herein. The composition of the present invention provides a water-borne dispersion that is substantially free of volatile organic solvents and that provides a readily degradable polymer that is useful, for example, in the manufacture of biodegradable packaging products.