Title:
METHOD FOR PREPARING VINYL CHLORIDE-BASED POLYMER AND VINYL CHLORIDE-BASED POLYMER PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2017/188594
Kind Code:
A1
Abstract:
The present invention provides a method for preparing a vinyl chloride-based polymer, and a vinyl chloride-based polymer prepared thereby, and thus has a high degree of polymerization and an excellent melt processability, the method comprising a step of suspension-polymerizing a vinyl chloride-based monomer, wherein after adding the vinyl chloride-based monomer, an aromatic hydrocarbon-based compound including a hydroxyl group and a reactive functional group having a carbon-carbon double bond is added at the point in time in which a pressure change is 0.5kg/cm2 to 1.5kg/cm2 on the basis of the equilibrium pressure at a polymerization temperature within a polymerization reactor.
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Inventors:
LIM JOONG CHUL (KR)
HA HYUN KYOU (KR)
JEON YANG JUN (KR)
JU JIN HYUCK (KR)
KANG MIN JEONG (KR)
HA HYUN KYOU (KR)
JEON YANG JUN (KR)
JU JIN HYUCK (KR)
KANG MIN JEONG (KR)
Application Number:
PCT/KR2017/002764
Publication Date:
November 02, 2017
Filing Date:
March 14, 2017
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F2/18; C08F2/44; C08F14/06; C08K5/138
Foreign References:
| US3160619A | 1964-12-08 | |||
| JPS6238378B2 | 1987-08-18 | |||
| KR20020045353A | 2002-06-19 | |||
| KR20150042727A | 2015-04-21 |
Other References:
SABAA, M. W. ET AL.: "Organic Thermal Stabilizers for Rigid Poly (vinyl chloride) VIII. Phenylurea and Phenyl Thiourea Derivatives", POLYMER DEGRADATION AND STABILITY, vol. 81, no. 1, 2003, pages 37 - 45, XP004425571
See also references of EP 3333197A4
See also references of EP 3333197A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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