Title:
METHOD FOR PRODUCING MODIFIED SULFUR CONTAINING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2003/076359
Kind Code:
A1
Abstract:
A method for producing a modified sulfur containing material, which comprises a step (A) of melting and reacting 100 parts by weight of sulfur and 0.1 parts by weight or more and less than 2 parts by weight of a sulfur modifying agent in a closed vessel, and a step (B1) of admixing an aggregate with a reaction product formed in the step (A) which contains a modified sulfur melt having an average molecular weight of 320 to 500 in an amount of 5 to 45 wt %, or a step (B2) of admixing an aggregate with a reaction product formed in the step (A) which contains a modified sulfur melt having an average molecular weight of 320 to 500 and has a viscosity of 20 to 200 mPa·s at 140°C. The method allows the production with good efficiency of a modified sulfur containing material in a molten state being improved in workability and a modified sulfur containing material in a solid state being improved in surface properties, mechanical strength, water-intercepting property, ignition resistance, the resistance to sulfur oxidizing bacteria, and the like.
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Inventors:
HASHIMOTO HIROSHI (JP)
Application Number:
PCT/JP2002/002214
Publication Date:
September 18, 2003
Filing Date:
March 08, 2002
Export Citation:
Assignee:
NIPPON OIL CORP (JP)
IDOMCO CORP (JP)
HASHIMOTO HIROSHI (JP)
IDOMCO CORP (JP)
HASHIMOTO HIROSHI (JP)
International Classes:
C04B28/36; C08G75/00; (IPC1-7): C04B28/36; C04B12/00; C08G75/00
Foreign References:
| JP2002097059A | 2002-04-02 | |||
| JP2002097060A | 2002-04-02 | |||
| JP2001163649A | 2001-06-19 | |||
| US4311826A | 1982-01-19 | |||
| JPS5542957B2 | 1980-11-04 | |||
| US4026719A | 1977-05-31 | |||
| US4129453A | 1978-12-12 |
Attorney, Agent or Firm:
Sakai, Hajime (7 Kojimachi 5-chom, Chiyoda-ku Tokyo, JP)
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