Simulated marble products

Details Simulated marble products Simulated marble products

1990-07-11

1992-05-12

Thibodeau, Paul J.

Stock material or miscellaneous articles

Three dimension imitation or 'treated' natural product

428323, 428327, 428330, 428403, 428407, B32B 516

Patent

active

051126575

ABSTRACT:
In the present invention, polymer binder systems are filled with inert fillers, such as calcium carbonate, and with specific thermoplastic microspheres bearing a surface coating of an inert particulate material compatible with the polymer binder system. The preferred inert particulate material on the microspheres is particulate or fibrous forms of calcium carbonate. The microspheres have a very low density, and the inert particulate for fibrous coating is thermally bonded to surface thereof. The microspheres may be employed in proportions up to as much as about 70 volume percent of the casting or molding composition, resulting in a product of exceptionally low weight and density.
The products of the present invention also provide high impact strength, high resistance to cracking and crack propagation, high tensile and yield strength, and a high modulus of elasticity, particularly compared to the usual cast marble products known to the art.

REFERENCES:
patent: 3640787 (1972-02-01), Heller
patent: 4722943 (1988-02-01), Melber et al.
patent: 4829094 (1989-05-01), Melber et al.
patent: 4839394 (1989-06-01), Champion
patent: 4843104 (1989-06-01), Melber et al.
patent: 4849456 (1989-07-01), Champion

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