Title:
PRODUCTION OF ALPHA-PINENE RESIN HAVING HIGH SOFTENING POINT
Document Type and Number:
Japanese Patent JP3558172
Kind Code:
B2
Abstract:
PURPOSE: To produce an α-pinene resin having a softening point as high as 140°C or above in yields as high as 80% or above.
CONSTITUTION: This production process is one for producing an α-pinene resin by polymerizing α-pinene in the presence of a catalyst system comprising aluminum chloride and antimony chloride in an inert solvent, which process comprises separately adding a mixture prepared by adding 0.5-1.5 pts. wt. antimony chloride to an inert solvent and α-pinene to a dispersion prepared by dispersing 1 pt.wt. aluminum chloride within the scope in which the total amount of the catalyst system used is 1-2wt.% based on the α-pinene to polymerize the α-pinene and further adding aluminum chloride and antimony chloride to the reaction system to polymerize the α-pinene.
Inventors:
Yoji Oyama
Katsuzo Tanioku
Katsuzo Tanioku
Application Number:
JP19175094A
Publication Date:
August 25, 2004
Filing Date:
July 22, 1994
Export Citation:
Assignee:
Arakawa Chemical Industry Co., Ltd.
International Classes:
C08F4/52; C08F4/42; C08F32/00; C08F32/08; (IPC1-7): C08F32/08; C08F4/52
Domestic Patent References:
| JP52095793A | ||||
| JP57036108A | ||||
| JP47021578B1 | ||||
| JP49090788A | ||||
| JP36020741B1 | ||||
| JP60044514A |
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