Non-tacky strand prepreg comprising a resin composition containing a combination of (1) a thermosetting resin and (2) a high molecular weight epoxy resin and a process for forming an article from the same
AssigneeToho Beslon Co., Ltd.
InventorsTsuyoshi Minamisawa, Keitsugu Nohara
Life of this patent
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Abstract
A strand prepreg which comprises (i) a resin composition comprising 100 parts by weight of thermosetting resin having a softening point of 60.degree. C. or less and about 5 to 60 parts by weight of epoxy resin having a number average molecular weight of 5,000 or more and (ii) about 20 to 80% by volume strands of carbon fibers, glass fibers, aromatic polyamide fibers and the like, wherein the strands are impregnated with the resin composition.
Claims18
A flexible, non-tacky strand prepreg which comprises (i) a resin composition comprising 100 parts by weight of thermosetting resin having a softening point of about 60.degree. C. or less and about 5 to 60 parts by weight of an epoxy resin having an average molecular weight of about 10,000 or more and (ii) about 20 to 80% by volume strands, wherein said strands are impregnated with said resin composition.
A process for forming an article which comprises stratifying one or more layers of a flexible non-tacky strand prepreg which comprises a resin composition comprising 100 parts by weight of thermosetting resin having a softening point of 60.degree. C. or less and about 5 to 60 parts by weight of epoxy resin having an average molecular weight of 10,000 or more and about 20 to 80% by volume strands, wherein said strands are previously impregnated with said resin composition, and hardening the resin composition at about 80.degree. to 600.degree. C. and at about 1 to 100 kg/cm.sup.2 pressure.
Dependencies are inferred from the claim text.