Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-04-12
1995-12-19
Dean, Ralph H.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525422, 525423, 525431, 525474, 525476, 525902, C08G 6548
Patent
active
054769086
ABSTRACT:
A cured resin product has a strain energy release rate (GIC) of at least 400 J/m.sup.2, a flexural modulus of at least 300 Kg/mm.sup.2, and a glass transition temperature (Tg) of at least 120.degree. C. The cured resin composition comprises a thermoset resin component (A), optionally including a curing agent (B), and a thermoplastics resin component (C), the thermoplastics resin and thermoset resin components (C) and (A) being present at least partly in respective phases (1) and (2) each being elongate in at least one direction and each preferably having a three dimensionally continuous structure. Phase (1) may contain a silicon containing compound providing a concentration therein of elemental silicon higher than that in any other phase, and/or the cured resin product may additionally include regions where one of the phases (1) and (2) essentially surrounds the other. The thermoplastics resin (C) may be a block or graft copolymer comprising a molecular chain compatible with, and molecular chain incompatible with, the thermoset resin (A). A composition containing the above components (A) to (C) may be compounded with fibrous reinforcement to provide a prepreg curable to obtain a high strength fiber reinforced plastics material.
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Kishi Hajime
Odagiri Nobuyuki
Tobukuro Kuniaki
Dean Ralph H.
Toray Industries Inc.
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