Kathleen Keller,Kimberly B. Kosto,Alan Isamu Nakatani,Miao Wang,Fanwen Zeng
申请号：
US15627640
公开号：
US20170283607A1
申请日:
2017.06.20
申请国别(地区):
US
年份:
2017
代理人:
摘要：
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, andwherein 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.
