Process for producing high-swellability polymer composites

US9834486B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Francisco Javier Lopez Villanueva · Schifferstadt, DE
• Tina Mark · Haßloch, DE
• Alexandra Wiedemann · Weisenheim am Berg, DE
• Alexander Wissemeier · Speyer, DE
• Michael Seufert · Bad Dürkheim, DE
• Jorge SANZ-GOMEZ · Heidelberg, DE
• Alban Glaser · Mannheim, DE

Key dates

• Filing date: Apr 28, 2014
• Grant date: Dec 5, 2017
• Expiry date: Apr 28, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2312/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing polymer composites suitable for absorbing and storing aqueous liquids, to the polymer composites obtainable by this process, and to the use of the polymer composites. The process comprises free-radical polymerization of a monomer composition M comprising 50 to 100% by weight, based on the total amount of monomers A and B, of at least one monomer A having one ethylenic double bond and at least one neutralizable acid group, 0 to 50% by weight of optionally one or more comonomers B which are different than the monomers A and have one ethylenic double bond, and 1 to 10% by weight, based on the total amount of monomers A and B, of at least one crosslinker C.