Granules with a narrow particle size distribution comprising fil

Details Granules with a narrow particle size distribution comprising fil Granules with a narrow particle size distribution comprising fil

1982-11-09

1984-06-19

Ives, P.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428331, 428404, 428406, 428407, 428516, 428520, 264241, B32B 516, B32B 2706

Patent

active

044553447

ABSTRACT:
Granules containing 60 wt. % or more filler, having such particle size distribution that 90 wt. % or more granular particles have a particle size of (1/3)d.sub.50.sup.b to 3d.sub.50.sup.b (d.sub.50.sup.b : mean particle size of the granules), and being produced by blending (a) 60 to 90 parts by weight of a filler having a mean particle size of 0.05 to 100.mu., (b) 5 to 35 parts by weight of crystalline polyolefin powder having a mean particle size (d.sub.50.sup.a) of 150 to 1,000.mu. and having such particle size distribution that 90 wt. % or more particles thereof have a particle size of (1/2)d.sub.50.sup.a to 2d.sub.50.sup.a, (c) 5 to 35 parts by weight of a binder having a melting point lower than that of said crystalline polyolefin powder by a least 10.degree.C., and optionally, (d) a compounding additive, at a temperature lower than the melting point of the crystalline polyolefin powder and higher than the melting point of the binder, is disclosed.

REFERENCES:
patent: 3971753 (1976-07-01), Frechtling et al.
patent: 4336301 (1982-06-01), Shaw

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