Title:
PROCESS FOR PRODUCING MODIFIED PHENOLIC RESIN
Document Type and Number:
WIPO Patent Application WO/2000/034349
Kind Code:
A1
Abstract:
A process for producing a modified phenolic resin which comprises heating and stirring a heavy oil or pitch together with a formaldehyde compound and a phenol represented by the formula (I) (wherein R?1¿ is a C¿2-10?, linear or branched, unsaturated hydrocarbon group having one or two unsaturated bonds; p is 1 or 2; X is C¿1-5? alkyl; and q is 0 or 1) in the presence of an acid catalyst to conduct polycondensation, the amounts of the formaldehyde compound and the phenol being 0.3 to 25 mol in terms of formaldehyde amount and 0.5 to 50 mol, respectively, per mol of the heavy oil or pitch. The modified phenol obtained by the process has flowability around room temperature because it has a far lower melting point than conventional modified phenolic resins obtained from a heavy oil or pitch. It further has a low melt viscosity and hence excellent moldability. When used in combination with an epoxy resin, the modified phenol can give a molded article excellent not only in heat resistance, moisture resistance, corrosion resistance, adhesion, etc. but also in dimensional stability and mechanical properties including strength.
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Inventors:
TAKEDA MITSUNORI (JP)
SATO MASAMICHI (JP)
SATO MASAMICHI (JP)
Application Number:
PCT/JP1999/005450
Publication Date:
June 15, 2000
Filing Date:
October 04, 1999
Export Citation:
Assignee:
KASHIMA OIL (JP)
TAKEDA MITSUNORI (JP)
SATO MASAMICHI (JP)
TAKEDA MITSUNORI (JP)
SATO MASAMICHI (JP)
International Classes:
C08G8/28; C08G10/04; C08G14/04; C08G59/62; C08L63/00; (IPC1-7): C08G8/28; C08G10/04; C08G14/04; C08G16/04; C08G59/62
Foreign References:
| EP0859374A2 | 1998-08-19 | |||
| JPH10251363A | 1998-09-22 | |||
| JPH10251364A | 1998-09-22 | |||
| JPH10316732A | 1998-12-02 |
Other References:
See also references of EP 1055690A4
Attorney, Agent or Firm:
Suzuki, Shunichiro (Nishigotanda 7-chome Shinagawa-ku, Tokyo, JP)
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