Chopped glass fibres for polyester resin-fibre composite moldings, especially reflecting mirrors for car head lamps, impregnated with a sizing agent containing a urethane resin, a vinyl acetate resin and a coupling agent

摘要

Chopped fibres comprising glass fibres impregnated with a sizing agent (I), for use in products molded from unsaturated polyester resin-based BMC materials, in which (I) comprises a urethane resin (A), a vinyl acetate resin (B) and a coupling agent (C), with a wt. ratio of (A)/(B) = 30/70-70/30. An Independent claim is also included for BMC moldings comprising 100 parts by weight (pts. wt.) matrix resin (mainly based on unsaturated polyester) and 30-150 pts. wt. chopped fibres as described above.