Title:
PREPARATION OF VINYL CHLORIDE POLYMER
Document Type and Number:
Japanese Patent JPS5490385
Kind Code:
A
Abstract:
Vinyl chloride polymers with a large BET surface area and good plasticizer absorption are prepared by suspension polymerization of vinyl chloride in the presence of a primary suspension agent and as a secondary suspension agent, a polyvinyl alcohol having a degree of polymerization of at least 250 and the percent of solvolysis in the range of 40 to 70 moles % which is narrowly distributed. The vinyl chloride polymer so produced has a relatively narrow particle size distribution and a uniformity factor of at least 4.
Inventors:
PIITAA YAN REMUSUTORA
ROBAATO KOOSUCHIAAN TEITO
ZEJINASU KUREIMAASU
ROBAATO KOOSUCHIAAN TEITO
ZEJINASU KUREIMAASU
Application Number:
JP15677678A
Publication Date:
July 18, 1979
Filing Date:
December 18, 1978
Export Citation:
Assignee:
STAMICARBON
International Classes:
C08F2/00; C08F2/18; C08F14/00; C08F8/12; C08F14/06; (IPC1-7): C08F2/20; C08F14/06
Domestic Patent References:
| JPS53136089A | 1978-11-28 | |||
| JPS543187A | 1979-01-11 |
Previous Patent: キラル化合物の調製方法
Next Patent: CONTINUOUS PREPARATION OF POLYOLEFIN HAVING BROAD MOLECULAR WEIGHT DISTRIBUTION
Next Patent: CONTINUOUS PREPARATION OF POLYOLEFIN HAVING BROAD MOLECULAR WEIGHT DISTRIBUTION