Title:
POLYARYLENE SULFIDE AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2007/034800
Kind Code:
A1
Abstract:
The invention provides an industrially useful polyarylene sulfide which has a narrow molecular weight distribution, a high molecular weight, and a high purity; and a process for the production thereof, namely, a polyarylene sulfide characterized by a weight-average molecular weight of 10,000 or above and a weight loss on heating satisfying the relationship: ΔWr = (W1 - W2)/W1 × 100 < 0.18 (%) (wherein ΔWr is weight loss (%); W1 is the weight of sample at the point of time of reaching 100°C; and W2 is the weight of sample at the point of time of reaching 330°C); and a process for the production thereof, characterized by heating a polyarylene sulfide prepolymer which comprises at least 50% by weight of cyclic polyarylene sulfides and has a weight-average molecular weight of less than 10,000 to convert the prepolymer into a high-polymerization-degree polymer having a weight-average molecular weight of 10,000 or above.
More Like This:
| JPH0335023 | PRODUCTION OF POLYARYLENE SULFIDE |
| JP2006219666 | POLYARYLENE SULFIDE RESIN COMPOSITION |
Inventors:
HORIUCHI SHUNSUKE (JP)
YAMAUCHI KOJI (JP)
YAMAUCHI KOJI (JP)
Application Number:
PCT/JP2006/318567
Publication Date:
March 29, 2007
Filing Date:
September 20, 2006
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
HORIUCHI SHUNSUKE (JP)
YAMAUCHI KOJI (JP)
HORIUCHI SHUNSUKE (JP)
YAMAUCHI KOJI (JP)
International Classes:
C08G75/02; C08G75/0209
Foreign References:
| JPH06172530A | 1994-06-21 | |||
| JP2003113242A | 2003-04-18 | |||
| JP2000281786A | 2000-10-10 | |||
| JPH05163349A | 1993-06-29 | |||
| JP2000508359A | 2000-07-04 | |||
| JP2004182840A | 2004-07-02 | |||
| JP2001261831A | 2001-09-26 | |||
| JPH09286860A | 1997-11-04 | |||
| JPH0341152A | 1991-02-21 | |||
| JP2000246733A | 2000-09-12 |
Other References:
POLYMER, vol. 37, no. 14, 1996
See also references of EP 1927615A4
See also references of EP 1927615A4
Attorney, Agent or Firm:
IWAMI, Tomonori (TORAY INDUSTRIES INC., 1-1, Sonoyama 1-chom, Otsu-shi Shiga, JP)
Download PDF:
Previous Patent: FLAT ORGANIC ELECTROLYTE BATTERY
Next Patent: FLEXIBLE PRINTED WIRING BOARD AND METHOD FOR MANUFACTURING SAME
Next Patent: FLEXIBLE PRINTED WIRING BOARD AND METHOD FOR MANUFACTURING SAME