Granular calcium carbonate for use as a direct additive for ther

Details Granular calcium carbonate for use as a direct additive for ther Granular calcium carbonate for use as a direct additive for ther

1996-04-25

1998-04-28

Dean, Ralph H.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524424, 524475, 523210, C08K 326

Patent

active

057445303

ABSTRACT:
A thermoplastic granule containing a high proportion of a particulate carbonate filler in a thermoplastic binder, for blending with an end product thermoplastic in which the carbonate filler is to be dispersed. The granule comprises at least 85% by weight of a particulate carbonate which is coated with one or more fatty acids having a carbon chain length of from 12 to 20 carbon atoms. The balance of the granule by weight comprises a thermoplastic polymeric binder which is solid at ambient temperature and is compatible with the end product thermoplastic in which the carbonate filler is to be dispersed. The polymeric binder is an amorphous polyolefins and/or a highly branched polyethylene wax. The PSD of the carbonate is selected to maximize packing.

REFERENCES:
patent: 4803231 (1989-02-01), Seinera et al.
patent: 4898620 (1990-02-01), Rayfield et al.
Chart of Conversions "Characteristics of Particles".
Tsukizaka et al., "Polypropylene Composition", (1974), CA82(12):73958w (CA Abstract Only).
Ling, ". . . High-Content Filled Master Bath . . . ", (1991), CA117(2):9309z (CA Abstract Only).
Mitsuishi et al., "High Loading Effect of Surface-Modified Inorganic Particles in Polymer Materials", (1989), CA111(14): 116163v (CA Abstract Only).

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