Title:
PROCESSES FOR PRODUCING POLYMERIZED ROSIN
Document Type and Number:
WIPO Patent Application WO/2002/062911
Kind Code:
A1
Abstract:
A process for efficiently producing a polymerized rosin through a simple step without the need of an advanced equipment; and a novel process capable of efficiently and economically producing a polymerized rosin by reusing the catalyst recovered. A rosin is polymerized in the presence of particles of a copolymer of (a) an ethylenic monomer with (b) a crosslinking monomer copolymerizable with the monomer (a), the particles having an average particle diameter of 0.1 to 3 mm, a specific surface area of 1 to 70 m?2¿/g, a pore volume of 0.1 to 1 mL/g, an average pore diameter of 100 to 1,500 Å, and a functional acid group content of 2.0 to 7.0 meq/g. The copolymer may be recovered and reused in the rosin polymerization.
Inventors:
MIYAMOTO TAKURO (JP)
FUJIWARA TAKAYUKI (JP)
FUJIWARA TAKAYUKI (JP)
Application Number:
PCT/JP2001/011076
Publication Date:
August 15, 2002
Filing Date:
December 18, 2001
Export Citation:
Assignee:
ARAKAWA CHEM IND (JP)
MIYAMOTO TAKURO (JP)
FUJIWARA TAKAYUKI (JP)
MIYAMOTO TAKURO (JP)
FUJIWARA TAKAYUKI (JP)
International Classes:
C08F4/00; C08F289/00; C09F7/06; C08L93/04; C09D157/00; C09D193/04; C09F1/04; C09J157/00; C09J193/04; (IPC1-7): C09F7/06
Foreign References:
| US4414146A | 1983-11-08 | |||
| JPS59108014A | 1984-06-22 | |||
| US5504234A | 1996-04-02 | |||
| US5663457A | 1997-09-02 | |||
| US4339377A | 1982-07-13 | |||
| US4536333A | 1985-08-20 | |||
| JPS61140534A | 1986-06-27 |
Other References:
See also references of EP 1369462A4
Attorney, Agent or Firm:
Asahina, Sohta (2-22 Tanimachi 2-chom, Chuo-ku Osaka-shi Osaka, JP)
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