Thomas C Gandolfo350 Emerald Forest Blvd, Covington, LA 70433

7331533, Feb 19, 2008

Mar 22, 2004

10/806026

John C. Bayer - Covington LA, US
Thomas C. Gandolfo - Covington LA, US

Compositech, L.L.C. - Fort Worth TX

E01B 9/14

238 84, 238 85, 2641772

A process is provided for making thermoplastic-composites from recycled thermoplastics (polyolefins) together with phosphogypsum waste by-product from the phosphate fertilizer wet process or, in an equally preferred embodiment with fluorogypsum waste by-product from fluorine production wet process to produce lumber profiles. The process involves (a) admixing phosphogypsum (calcium sulfate) and/or fluorogypsum (calcium fluoride) waste byproduct and/or Flue Gas Desulfurization (FGD) gypsum and/or crude gypsum and/or calcined gypsum with thermoplastics and a functionalized compound with or without coupling agents to produce a filled thermoplastic-composite composition, and (b) melt processing the composition to produce a filled thermoplastic-composite article. The articles are preferably in the form of railroad cross ties or construction articles such as common lumber profiles, panels, tiles, poles, utility poles, crossarms for utility poles, roofing tiles, pipeline skids, pilings, marine fender-piles (including light emitting piles), bulkheads, revetments, and are useful for constructing various structures, such as oilfield board roads and equipment mats. The process avoids the accumulation of undesired phosphogypsum/fluorogypsum “stacks” and provides environmentally friendly useful products which require no chemical preservatives to prevent insect infestation or decay from the elements.

2008017, Jul 31, 2008

Jan 31, 2008

12/023742

John C. BAYER - Baton Rouge LA, US
Thomas C. Gandolfo - Covington LA, US

COMPOSITECH, L.L.C. (a Louisiana Limited Liability Company) - Fort Worth TX

C09K 11/02
C08K 3/30
E01B 3/00
E01B 29/00
E02D 5/24

238 84, 524423, 238 1, 405231

A process is provided for making thermoplastic-composites from recycled thermoplastics (polyolefins) together with phosphogypsum waste by-product from the phosphate fertilizer wet process or, in an equally preferred embodiment with fluorogypsum waste by-product from fluorine production wet process to produce lumber profiles. The process involves (a) admixing phosphogypsum (calcium sulfate) and/or fluorogypsum (calcium fluoride) waste byproduct and/or Flue Gas Desulfurization (FGD) gypsum and/or crude gypsum and/or calcined gypsum with thermoplastics and a functionalized compound with or without coupling agents to produce a filled thermoplastic-composite composition, and (b) melt processing the composition to produce a filled thermoplastic-composite article. The articles are preferably in the form of railroad cross ties or construction articles such as common lumber profiles, panels, tiles, poles, utility poles, crossarms for utility poles, roofing tiles, pipeline skids, pilings, marine fender-piles (including light emitting piles), bulkheads, revetments, and are useful for constructing various structures, such as oilfield board roads and equipment mats. The process avoids the accumulation of undesired phosphogypsum/fluorogypsum “stacks” and provides environmentally friendly useful products which require no chemical preservatives to prevent insect infestation or decay from the elements. Tailings from ore processing can also be used as a filler.

6001491, Dec 14, 1999

Feb 11, 1998

9/022226

John C. Bayer - Folsom LA
Thomas C. Gandolfo - Covington LA

Polysum Technologies, L.L.C. - Covington LA

B32B 2700

428500

A composite marine piling is provided comprising (a) a core element comprising filler and a thermoplastic resin and (b) a sheath comprising thermoplastic resin and a light absorbing/emitting material. The filled thermoplastic composition of the core element is melt processed (for example injection or compression molded) to produce the filled thermoplastic composite marine piling core element. The sheath covers top of the core element to provide the top portion of the piling with a light responsive sheath to enhance the visibility of the piling to ship operators. The piling is a useful replacement for wood pilings and has several physical property advantages and preferably being suitable made from recycled plastic and waste byproduct filler.