Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1996-09-27
1998-05-05
Wilson, Donald R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523427, 523436, 523440, 523443, 523444, 523467, 523457, 525 65, 525902, C08L 6300, C08L 3306, C08G 5942, C08K 322
Patent
active
057475571
ABSTRACT:
A method of manufacturing a castable epoxy resin composition which comprises as components an epoxy resin, an acid anhydride in an amount sufficient for hardening, an inorganic filler, and acrylic rubber particles having a thermoplastic resin skin, said thermoplastic resin skin being 1 to 50 wt % of said acrylic rubber particles, wherein each of said acrylic rubber particles has epoxy groups on a surface thereof, and said acrylic rubber particles are present in an amount ranging between 2 and 40 parts by weight based on 100 parts by weight of said epoxy resin, wherein said inorganic filler is an alumina powder having a mean particle size by volume of 6 to 16 .mu.m, and a particle size of at least 10 volume % of said alumina powder particles is 20 .mu.m or greater, and wherein at least 90 volume % of said rubber particles are dispersed as discrete particles with a particle size by volume of 1 .mu.m or less, said method comprising the steps of:
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Hanyu Koshi
Yoshizumi Akira
Kabushiki Kaisha Toshiba
Wilson Donald R.
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