公开(公告)号：US20180037784A1

公开(公告)日：2018-02-08

申请号：US15532521

申请日：2015-12-02

Applicant: Arkema France

Inventor： Mario LUGLI ,  Umberto AMADEI ,  Simona FERRETTI ,  Luca RESTA ,  Leo Mario SAIJA

IPC: C09J151/04 ,  C08L51/04 ,  C09J7/02 ,  C08F253/00

CPC classification number: C09J151/04 ,  C08F2/22 ,  C08F253/00 ,  C08F279/02 ,  C08L51/04 ,  C08L2201/50 ,  C09J7/381 ,  C09J7/383 ,  C09J7/385 ,  C09J2203/30 ,  C09J2205/114 ,  C09J2407/00 ,  C09J2433/00 ,  C09J2451/00 ,  C08F220/18 ,  C08F2220/1816

Abstract: The invention relates to an aqueous polymer dispersion comprising: a) an aqueous polymer dispersion comprising grafted rubber polymeric particles from rubber polymer being selected from natural or synthetic rubber, b) an aqueous polymer dispersion with polymeric particles of a second polymer comprising monomeric units derived front a monomeric composition b) comprising: b1) a (meth)acrylate of a linear or branched alcohol in C4 to C10 or a mixture of such (meth)acrylates, said (meth)acrylate having Tgb1 lower than −30° C., b2) optionally, at least one comonomer having Tgb2 higher than −30° C., with said grafted rubber polymeric particles being grafted in an aqueous dispersion by a part of said monomeric composition b) as defined above. The invention covers a process of preparation of said dispersion, an adhesive composition comprising said dispersion, the use of said dispersion in pressure sensitive adhesives, and the resulting adhesive.

公开(公告)号：US20210363394A1

公开(公告)日：2021-11-25

申请号：US17394445

申请日：2021-08-05

Applicant: Arkema France

Inventor： Mario LUGLI ,  Umberto AMADEI ,  Simona FERRETTI ,  Luca RESTA ,  Leo Mario SAIJA

IPC: C09J151/04 ,  C08F253/00 ,  C08F279/02 ,  C09J7/38 ,  C08F2/22 ,  C08L51/04

Abstract: The invention relates to an aqueous polymer dispersion which comprises: a) an aqueous polymer dispersion comprising grafted rubber polymeric particles from rubber polymer being selected from natural or synthetic rubber, b) an aqueous polymer dispersion with polymeric particles of a second polymer comprising monomeric units derived from a monomeric composition b) comprising: b1) a (meth)acrylate of a linear or branched alcohol in C4 to C10 or a mixture of such (meth)acrylates, said (meth)acrylate having Tgb1 lower than −30° C., b2) optionally, at least one comonomer having Tgb2 higher than −30° C.,
with said grafted rubber polymeric particles being grafted in an aqueous dispersion by a part of said monomeric composition b) as defined above. The invention covers also a specific process of preparation of said dispersion, an adhesive composition comprising said dispersion, the use of said dispersion in pressure sensitive adhesives and the resulting adhesive.