公开(公告)号：US20170327660A1

公开(公告)日：2017-11-16

申请号：US15533794

申请日：2015-12-04

Applicant: COLORMATRIX HOLDINGS, INC.

Inventor： Mark Dixon ,  Christopher Small ,  Patrick Brown

IPC: C08J9/10

CPC classification number: C08J9/105 ,  C08J9/0066 ,  C08J2201/024 ,  C08J2201/03 ,  C08J2203/02 ,  C08J2203/04 ,  C08J2300/22 ,  C08J2327/06

Abstract: A method of preparing a foamed thermoplastic polymer comprises contacting a chemical blowing agent (A) which is a semi-carbazide with a thermoplastic polymer or a precursor of a thermoplastic polymer. Blowing agent (A) is preferably p-toluenesulfonyl semi-carbazide and said polymer is preferably PVC. Formulations, including liquid formulations which include the blowing agent (A) and other ingredients, are also described.