Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Reexamination Certificate
2008-02-22
2010-11-02
Edwards, N. (Department: 1782)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
C428S370000, C428S374000, C428S378000, C428S297400, C524S609000
Reexamination Certificate
active
07824770
ABSTRACT:
This invention relates to: a molding material comprising a bundle of continuous reinforcing fibers (A), a polyarylene sulfide prepolymer (B) comprising at least 50% by weight of cyclic polyarylene sulfide and having the weight average molecular weight of less than 10,000 or polyarylene sulfide (B′) having the weight average molecular weight of 10,000 or greater and the degree of dispersion of 2.5 or lower, and thermoplastic resin (C); a prepreg comprising a resin composition comprising the polyarylene sulfide prepolymer (B) impregnated into a reinforcing fiber; and a method for producing a fiber-reinforced molding substrate comprising step (I) of continuously feeding a bundle of continuous reinforcing fibers, step (II) of combining cyclic polyarylene sulfide with the reinforcing fiber bundle, step (III) of heating the composite obtained in step (II) to subject the cyclic polyarylene sulfide to ring-opening polymerization to convert into polyarylene sulfide, and step (IV) of cooling the composite obtained in step (III) and withdrawing the same.
REFERENCES:
patent: 4680224 (1987-07-01), O'Connor
patent: 5093155 (1992-03-01), Miyazaki et al.
patent: 5286809 (1994-02-01), Heinz et al.
patent: 5397608 (1995-03-01), Soens
patent: 5488084 (1996-01-01), Kadoi et al.
patent: 5679456 (1997-10-01), Sakai et al.
patent: 5789073 (1998-08-01), Odagiri et al.
patent: 5869599 (1999-02-01), Hay et al.
patent: 6027794 (2000-02-01), Ozaki et al.
patent: 6455143 (2002-09-01), Ishibashi et al.
patent: 6828374 (2004-12-01), Ishibashi et al.
patent: 6949288 (2005-09-01), Hodge et al.
patent: 7750111 (2010-07-01), Horiuchi et al.
patent: 2010/0068518 (2010-03-01), Honma et al.
patent: 2010/0137531 (2010-06-01), Horiuchi
patent: 3-88828 (1991-04-01), None
patent: 5-39371 (1993-02-01), None
patent: 5-163349 (1993-06-01), None
patent: 8-118489 (1996-05-01), None
patent: 9-25346 (1997-01-01), None
patent: 10-77408 (1998-03-01), None
patent: 10-138379 (1998-05-01), None
patent: WO2007/034800 (2007-03-01), None
International Search Report dated Apr. 8, 2008, application No. PCT/JP2008/053014.
“Polymerization of poly (p-phenylene sulfide) from a cyclic precursor”, Dean A. Zimmerman, et al., Polymer, vol. 37, No. 14, pp. 3111-3116, 1996.
Honda Shiro
Honma Masato
Horiuchi Shunsuke
Yamauchi Koji
Edwards N.
RatnerPrestia
Toray Industries Inc.
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