Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2009-08-18
2011-12-13
Gulakowski, Randy (Department: 1766)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S431000, C525S537000
Reexamination Certificate
active
08076423
ABSTRACT:
A process for producing a polyphenylene sulfide resin composition includes melt-kneading about 99 to about 60 wt % of a polyphenylene sulfide resin (a) and about 1 to about 40 wt % of a polyamide resin (b), and about 0.1 to 10 parts by weight of a compatibilizing agent (c) per 100 parts by weight in total of the polyphenylene sulfide resin (a) and the polyamide resin (b), using a double screw extruder with two or more kneading portions at a temperature of the range from a melting peak temperature of the polyphenylene sulfide resin+10° C. to a melting peak temperature of the polyphenylene sulfide resin+70° C., wherein the polyamide resin (b) is excluded nylon 46 and has a relative viscosity of 1.5 or more measuring in concentrated sulfuric acid at a concentration of 1% and at 25° C., wherein the compatibilizing agent (c) is a compound having one or more types of groups selected from epoxy groups, amino group and isocyanate group, and wherein the resin composition has a morphology that the polyphenylene sulfide resin (a) in the resin composition forms a sea phase while the polyamide resin (b) in the resin composition forms an island phase, and the number average dispersed particle size of the polyamide resin (b) is kept at less than about 500 nm after the resin composition is melted and allowed to reside at 300° C. for 30 minutes.
REFERENCES:
patent: 4528346 (1985-07-01), Sugie et al.
patent: 4652138 (1987-03-01), Inoue et al.
patent: 4772664 (1988-09-01), Ueda et al.
patent: 5387652 (1995-02-01), Kawaki et al.
patent: 5759732 (1998-06-01), Nakamura et al.
patent: 5786422 (1998-07-01), Mizutani et al.
patent: 5859176 (1999-01-01), Nakahashi et al.
patent: 6241375 (2001-06-01), Wang
patent: 6545075 (2003-04-01), Nishihata et al.
patent: 6713545 (2004-03-01), Petiniot et al.
patent: 6890091 (2005-05-01), Murakami et al.
patent: 6900272 (2005-05-01), Matsuoka et al.
patent: 7018574 (2006-03-01), Koyama
patent: 7098273 (2006-08-01), Yamada et al.
patent: 7115312 (2006-10-01), Matsuoka et al.
patent: 2002/0107335 (2002-08-01), Nishihata et al.
patent: 2003/0113562 (2003-06-01), Bartsch et al.
patent: 59-155462 (1987-09-01), None
patent: 63-189458 (1988-08-01), None
patent: 3-056561 (1991-03-01), None
patent: 3-081367 (1991-04-01), None
patent: 3-231969 (1991-10-01), None
patent: 5-051532 (1993-03-01), None
patent: 10-120902 (1998-05-01), None
patent: 11-293109 (1999-10-01), None
patent: 2001-302918 (2001-10-01), None
patent: 2003-113307 (2003-04-01), None
patent: 2003-261687 (2003-09-01), None
patent: 2004-059757 (2004-02-01), None
Original document and Machine Translation of JP 2003-113307 A Kobayashi et al.
Utracki, L.A. Polymer Blends Handbook, vols. 1-2.. Springer-Verlag. Chapter 10.4.2.1 Processing Parameters: Screw and Barrel p. 691. Online version available at: http://knovel.com/web/portal/browse/display?—EXT—KNOVEL—DISPLAY—bookid=1117&VerticalID=0.
Ishio Atsushi
Kobayashi Sadayuki
Saitoh Kei
DLA Piper (LLP) US
Dollinger Mike M
Gulakowski Randy
Toray Industries Inc.
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