Title:
【発明の名称】高純度ビニルメチルエーテルモノマーからのポリ(ビニルメチルエーテル)の液相および水溶液
Document Type and Number:
Japanese Patent JP3416708
Kind Code:
B2
Abstract:
A process is disclosed for the preparation of liquid and aqueous solutions of amorphous colorless poly (vinyl methyl ether) polymer with low level of impurities from purified vinyl methyl ether. The polymer has relatively high molecular weight, narrow molecular weight distribution and does not degrade readily due to the presence of impurities. The purification of the monomer uses a procedure selected from the group consisting of a vapor-liquid separation, a solid-liquid separation and combinations thereof to remove the impurities at a temperature within the range of from -20 DEG C. to +30 DEG C. The aqueous solution is prepared by devolitilization of solvent solutions of the polymerized purified vinyl methyl ether monomer. The solid polymer is prepared by heating the aqueous solution of the poly(vinyl methyl ether). The amorphous polymers of poly(vinyl methyl ether) are particularly suited for adhesive applications.
Inventors:
Crusick, Matthew A
Conning, Paul A
Conning, Paul A
Application Number:
JP50644195A
Publication Date:
June 16, 2003
Filing Date:
July 28, 1994
Export Citation:
Assignee:
Case Western Reserve University
International Classes:
C07C41/34; C07C41/36; C07C41/42; C07C43/16; C08F2/04; C08F2/06; C08F6/00; C08F6/06; C08F6/12; C08F16/16; C08F16/18; (IPC1-7): C08F6/06; C08F2/04; C08F6/12; C08F16/16
Other References:
【文献】米国特許3378537(US,A)
【文献】米国特許3459723(US,A)
【文献】米国特許3718634(US,A)
【文献】米国特許3459723(US,A)
【文献】米国特許3718634(US,A)
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)