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
2007-02-12
2009-02-17
Sellers, Robert (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C428S130000, C428S137000, C428S138000, C525S480000, C525S523000, C525S524000, C525S525000
Reexamination Certificate
active
07491774
ABSTRACT:
A production method of granular epoxy resin includes an epoxy resin preparing step of preparing an epoxy resin which is solid at ordinary temperature by reaction between a phenol compound and epihalohydrin; a purifying processing step of refining the prepared epoxy resin which is solid at ordinary temperature so that the total content of compounds having a molecular weight of 200 or less is 0.28% by mass or less of the entire epoxy resin; and a pulverizing step of pulverizing the refined epoxy resin obtained by the purifying processing step under conditions so as not to make the total content of compounds having a molecular weight of 200 or less exceeding 0.3% by mass, wherein the epoxy resin which is solid at ordinary temperature prepared by the epoxy resin preparing step is mainly composed of at least one selected from oligomers represented by the following general formula (1) and oligomers represented by the following general formula (2).
REFERENCES:
patent: 3554770 (1971-01-01), Lipsky et al.
patent: 5008137 (1991-04-01), Nugent, Jr. et al.
patent: 5149730 (1992-09-01), Murata et al.
patent: 5739186 (1998-04-01), Hayakawa et al.
patent: 6046284 (2000-04-01), Shinohara et al.
patent: 6255365 (2001-07-01), Hayakawa et al.
patent: 6548620 (2003-04-01), Murata
patent: 2004/0202864 (2004-10-01), Murata et al.
patent: S57-031924 (1982-02-01), None
patent: S59-230069 (1984-12-01), None
patent: H08-104757 (1996-04-01), None
patent: 8 283688 (1996-10-01), None
patent: H09-328558 (1997-12-01), None
patent: 11 323099 (1999-11-01), None
patent: 2002-178438 (2002-06-01), None
patent: 2003-080631 (2003-03-01), None
patent: 555776 (2003-10-01), None
patent: 200640975 (2006-12-01), None
Hayakawa Atsuhito
Itou Akihiro
Murata Yasuyuki
Japan Epoxy Resins Co., Ltd.
Kanesaka Manabu
Sellers Robert
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