发明名称 |
Process for preparing a highly expanded polyvinyl chloride foam product |
摘要 |
An expanded polyvinyl chloride foam is prepared by a process characterized by admixing a polyvinyl chloride resin, which is prepared by emulsion copolymerization of a comonomer having an hydroxyl group, or a group capable of producing an hydroxyl group in the molecule under the processing conditions, with a plasticizer, a cross-linking agent, and a chemical blowing agent, introducing the admixture into a mold at a temperature lower than the melting temperature of said resin, and thereafter heating the resulting molded product to a temperature higher than the melting temperature of said resin to effect foam expansion.
|
申请公布号 |
US4028449(A) |
申请公布日期 |
1977.06.07 |
申请号 |
US19750548924 |
申请日期 |
1975.02.11 |
申请人 |
MITSUBISHI MONSANTO CHEMICAL COMPANY |
发明人 |
KAKITANI, HARUAKI;MAEKAWA, MASAO;KOKUBO, TAKASHI |
分类号 |
C08J9/06;(IPC1-7):B29D27/00 |
主分类号 |
C08J9/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|