Directly moldable resin compositions for composite plastics

Details Directly moldable resin compositions for composite plastics Directly moldable resin compositions for composite plastics

1984-01-27

1985-06-18

Lilling, Herbert J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523215, 523216, 523217, 523218, 523220, 523221, 523205, C08K 900, C08K 700

Patent

active

045241600

ABSTRACT:
A directly moldable resin composition for a composite plastic is disclosed, which comprises a predetermined amount of a mixture of pellets of a thermoplastic synthetic resin having an average size of 2.0 mm or larger and particles of a thermoplastic resin having an average size in a predetermined range, or particles of a thermoplastic resin alone having an average size of below 900 microns, and the balance of at least one filler such as particulate inorganic fillers or fibrous fillers. The particles of a thermoplastic resin should preferably be contained in an amount equal to or higher than 100% by volume of the at least one filler. When determined by a suspending tensile failure method at a tension speed of 2 mm/cm.sup.2, a particulate filler should preferably have an adhesion force in the range of below 4 g/cm.sup.2. Greater amounts of the mixture or the particles of thermoplastic resins can be used when the filler is treated on the surface thereof with organic compounds with a H.L.B. value below 13 so as to improve affinity for synthetic resins.

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