Title:
PROCESS FOR HYDROTREATING RESIN TO LIGHTEN COLOR
Document Type and Number:
Japanese Patent JP3971468
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lighten the color of a specific hydrocarbon resin having carbon- carbon double bonds by bringing it into contact with hydrogen under specified conditions in the presence of a catalyst.
SOLUTION: This method for lightening the color of a substantially amorphous hydrocarbon resin having carbon-carbon double bonds and contg. color bodies essentially comprises obtaining a substantially amorphous hydrocarbon resin having a wt. average mol.wt. of about 250 - about 10,000 and bringing the resin into contact with hydrogen under a hydrogen pressure of 1-20 bar (14.5-290 psi) in the presence of a catalyst that promotes the hydrogenation of the color bodies without substantially changing the softening point or the content of carbon-carbon double bonds in the resin. The hydrogen pressure is pref. 1-15 bar (14.5-218 psi), still pref. 1-10 bar (14.5-145 psi). The catalyst is pref. at least one selected from the group consisting of Ni/Zn, Ni, Pd, and oxides thereof, Ni/ZnO being esp. pref.
Inventors:
Eric Belevoez
Yang Vern Drongelen
Yang Vern Drongelen
Application Number:
JP1869996A
Publication Date:
September 05, 2007
Filing Date:
February 05, 1996
Export Citation:
Assignee:
Eastman Chemical Resins, Inc.
International Classes:
C08F6/02; C08F6/00; C08F8/04; C08F6/28; C08G61/02; C08J9/36; (IPC1-7): C08F8/04
Domestic Patent References:
| JP6298845A | ||||
| JP5155918A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita
Hiroaki Noya
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita
Hiroaki Noya
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