Method for producing solid materials on the basis of synthetic polymers and/or biopolymers and use thereof

US8198219B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Simon Champ · Ludwigshafen, DE
• Robert Chapman · Colorado Springs, US

Key dates

• Filing date: Feb 16, 2009
• Grant date: Jun 12, 2012
• Expiry date: Feb 16, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L89/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The use of solid materials based on synthetic polymers and/or biopolymers (A) in natural gas and mineral oil extraction technology. The solid materials are produced by solubilizing at least one synthetic polymer and/or biopolymer (A), or at least one synthetic polymer and/or biopolymer (A) and at least one additive (B), in at least one substantially anhydrous chaotropic liquid (C). The solution or dispersion (AC) or (ABC) is contacted with a liquid (D1) which is miscible with the chaotropic liquid (C), but in which at least the synthetic polymer and/or the biopolymer (A) are substantially insoluble, resulting in a phase (E). The chaotropic liquid (C) is removed from phase (E) to result in a gel (G), which is impregnated with a liquid (D2). The two liquids (D1) and (D2) are removed from the gel (G) by evaporating, producing a solid material based on synthetic polymer and/or biopolymer (A).