公开(公告)号：US20230082890A1

公开(公告)日：2023-03-16

申请号：US17987928

申请日：2022-11-16

Applicant: Rohm and Haas Company

Inventor： Kathleen Keller ,  Kimberly B. Kosto ,  Alan Isamu Nakatani ,  Miao Wang ,  Fanwen Zeng

IPC: C08L51/00 ,  A61K8/81 ,  A61Q5/06 ,  C08F265/04 ,  C08F265/06

Abstract: A method for styling hair comprises placing the hair in a desired configuration and applying a hair styling composition to the hair. The hair styling composition comprises a powder of a multistage polymer of a soft polymer of Tg 40° C., and at least 10° C. higher than the Tg of the soft polymer wherein the hard polymer forms a complete or partial shell around the soft polymer the weight ratio of hard polymer to soft polymer being 1.01:1 to 2:1. After exposure to liquid water and drying at temperatures below 100° C., a maximum thermal transition temperature of the multistage polymer in an atmosphere of 0% relative humidity that differs by 20° C. or less from the maximum thermal transition temperature in an atmosphere of 75% relative humidity.

公开(公告)号：US20170283607A1

公开(公告)日：2017-10-05

申请号：US15627640

申请日：2017-06-20

Applicant: Rohm and Haas Company

Inventor： Kathleen Keller ,  Kimberly B. Kosto ,  Alan Isamu Nakatani ,  Miao Wang ,  Fanwen Zeng

IPC: C08L51/00 ,  A61Q5/06 ,  C08F265/06 ,  A61K8/81 ,  C08F265/04

CPC classification number: C08L51/003 ,  A61K8/8152 ,  A61K8/8158 ,  A61K2800/594 ,  A61Q5/06 ,  C08F265/04 ,  C08F265/06 ,  C08L2666/02

Abstract: There is provided a powder that comprises a multistage polymer that comprises (a) at least one soft polymer having glass transition temperature of 40° C. or lower, and (b) at least one hard polymer having glass transition temperature higher than 40° C., wherein the glass transition temperature of said hard polymer is at least 10° C. higher than the glass transition temperature of said soft polymer, wherein the weight ratio of said hard polymer to said soft polymer is from 1.01:1 to 100:1, and wherein said multistage polymer, after exposure to liquid water followed by drying at temperatures below 100° C., shows maximum thermal transition temperature in an atmosphere of 0% relative humidity that differs by 20° C. or less from the maximum thermal transition temperature in an atmosphere of 75% relative humidity.