Aqueous dispersion of polymer made from multistructured particles for aqueous wall coatings resistant to dirt and wet abrasion
申请人:Arkema France
公开号:US10465078B2
公开(公告)日:2019-11-05
The invention relates to an aqueous dispersion of polymer, based on structured polymer particles, said particles comprising a core polymer phase, based on a polymer P1 with Tg1 ranging from 60 to 120° C., a second polymer phase enveloping said core, based on a polymer P2 with a Tg2 ranging from −60 to 40° C. and a third outer polymer phase (or shell) based on a polymer P3, with a Tg3 ranging from Tg2−5° C. to Tg2+5° C. and having an Mn not exceeding 150 000, with the weight contents of said polymers P1, P2 and P3 being, relative to the total weight of polymer (P1+P2+P3): P1 from 5% to 60%, P2 from 40% to 85%, P3 from 5% to 25% with the sum of said weight contents being 100%.
本发明涉及一种聚合物水分散液,以结构化聚合物颗粒为基础,所述颗粒包括核心聚合物相,以聚合物 P1 为基础,Tg1 为 60 至 120 摄氏度、以聚合物 P3 为基础的第三层外聚合物相(或外壳),其 Tg3 在 Tg2-5 摄氏度到 Tg2+5 摄氏度之间,且 Mn 不超过 150 000:P1 为 5%至 60%,P2 为 40%至 85%,P3 为 5%至 25%,上述重量含量之和为 100%。