Eryazici Ibrahim,Hageman Bradley K.,Hoefler Joseph M.,Nungesser Edwin
申请号：
US201615246583
公开号：
US10100377(B2)
申请日:
2016.08.25
申请国别(地区):
美国
年份:
2018
代理人:
Stauss Kari E.`Cantor Colburn LLP
摘要：
The present invention provides aqueous composition comprising a multi-stage acrylic emulsion polymer having a first stage polymer of from 0.5 to 4 wt. %, based on the total weight of monomers used to make the first stage polymer, of a copolymerized carboxylic acid or salt group containing monomer, and having 10 to 30 wt. %, on total solids of the multi-stage acrylic emulsion polymer, of a second stage polymer of from 3 to 15 wt. % of a copolymerized hydroxyl group containing monomer, the first stage polymer having a glass transition temperature (Tg) by dynamic mechanical analysis (DMA) of less than −10° C. and the second stage polymer having a Tg (DMA) of greater than 80° C.; and (ii) from 25 to 75 wt. %, based on the total solids weight of the multi-stage acrylic polymer, of a polyurethane.
