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US 6,387,985 B1Granted
Acrylic based formulation for improved temperature and impact performance employing crushed natural stone
AssigneeE. I. Du Pont de Nemours and Company
InventorsSteven P. Wilkinson, Larry L. Burchfield
Life of this patent
Estimating the term…
Abstract
An acrylic and quartz based composition for surfacing material that improves temperature and impact performance over the polyester composition of the prior art.
Claims8
A composition for a surfacing material comprising by weight:
- (a) 5% to 15% of an acrylic resin matrix wherein the degree of cross-linking is controlled by addition of 0.5% to 10%, by weight, of a tri-functional acrylic monomer;
- and
- (b) 85% to 95% of a filler comprised of crushed natural stone.
A composition for a crushed-stone filled acrylic resin surfacing material comprising by weight:
- (a) 5% to 15% of an acrylic resin matrix comprised of:
- (i) 20 to 65 parts of an ethylenically unsaturated monomer;
- and
- (ii) 5 to 65 parts of an acrylic oligomer;
- and
- (iii) 15 to 30 parts of an acrylic polymer;
- and
- (iv) 1 to 5 parts of a tri-functional acrylic monomer, and
- (v) 1 to 2 parts peroxide initiator;
- and
- (vi) 0.01 to 20 parts pigment;
- and
- (vii) 1 to 2 parts of a silane coupling agent,
- (b) 85% to 95% of a filler comprised of crushed natural stone;
- and
- (c) 0% to 4% of decorative additives.
13 more elements
A composition for a crushed-stone filled acrylic resin surfacing material comprising by weight:
- (a) 6% to 10% of an acrylic resin comprised of:
- (i) 60 parts of an ethylenically unsaturated monomer;
- and
- (ii) 17 to 20 parts of an acrylic oligomer;
- and
- (iii) 19 to 20 parts of an acrylic polymer;
- and
- (iv) 3 parts of a tri-functional monomer and
- (v) 1 to 2 parts peroxide initiator;
- and
- (vi) 0.01 to 20 parts pigment;
- and
- (vii) 1 to 2 parts silane coupling agent,
- (b) 90% to 94% parts of a filler comprised of crushed natural stone;
- and
- (c) 0 to 2% of decorative additives.
13 more elements
Dependencies are inferred from the claim text.