公开(公告)号：US11104775B2

公开(公告)日：2021-08-31

申请号：US16097379

申请日：2017-03-22

Applicant: IMERYS TALC AMERICA, INC.

Inventor： Neil Treat

IPC: C08J9/00 ,  C08K3/01 ,  C08K5/098 ,  C08J9/12 ,  C08K3/34 ,  C08K9/04 ,  C08J3/20

Abstract: This disclosure describes processes for producing polymer foams, and compositions of matter relating to these processes. A process includes the steps of dispersing an organic nucleating agent in a dispersing medium to obtain an additive dispersion, contacting the additive dispersion with a mineral nucleating agent to obtain a hybrid nucleating agent containing the organic nucleating agent localized on at least a portion of a surface of the mineral nucleating agent, and contacting the hybrid nucleating agent with a polymer in the presence of a foaming agent to obtain a polymer foam. A foamed polymer of the present disclosure includes a cellular matrix containing a polymer material, and a mineral matrix of particles containing a hybrid nucleating agent dispersed in the cellular matrix, in which the hybrid nucleating agent contains an organic nucleating agent localized on at least a portion of a surface of an inorganic material.