公开(公告)号：US20240174903A1

公开(公告)日：2024-05-30

申请号：US18521242

申请日：2023-11-28

申请人： CertainTeed Gypsum, Inc.

发明人： Emma Egli ,  Nicky Chan ,  Melissa Monello ,  Choung-Houng Lai ,  Aldo Glean ,  James N. Gordon

IPC分类号： C09J133/08 ,  C09J11/08

CPC分类号： C09J133/08 ,  C09J11/08 ,  C09J2301/312 ,  C09J2301/408

摘要： In one aspect, the present disclosure relates generally to a set acoustic adhesive composition having a storage modulus at 20° C. of at least 2.0 MPa over a frequency of 1-10 kHz, the set acoustic adhesive composition comprising: a continuous phase of a viscoelastic material present in an amount in the range of 60-95 wt % of the set adhesive composition; and dispersed in the continuous phase, a particulate polymer filler present in an amount in the range of 5-40 wt % of the set adhesive composition, wherein the particulate polymer filler has a storage modulus at 20° C. of at least 50 times a storage modulus at 20° C. of the continuous phase at 20° C., over a frequency of 1-10 kHz; and/or the viscoelastic material of the continuous phase has a glass transition temperature (Tg) no greater than 0° C., and the particulate polymer filler has a glass transition temperature (Tg) of at least 60° C.