Concentrated inverse latex, process for preparing it and industrial use thereof

US8765822B2 · kind B2 · utility

Assignee

• SOCIETE D'EXPLOITATION DE PRODUITS POUR LES INDUSTRIES CHIMIQUES SEPPIC · FR

Inventors

• Olivier Braun · Castres, FR
• Paul Mallo · Croissy-sur-Seine, FR

Key dates

• Filing date: Feb 24, 2012
• Grant date: Jul 1, 2014
• Expiry date: Feb 24, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/585
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A composition in the form of a positive latex includes: a) 50-80 wt. % of at least one cross-linked, branched, or linear organic polymer (P), b) 5-10 wt. % of a water-in-oil (W/O) emulsifying system (S1), c) 5-45 wt. % of at least one oil, and d) 0-5 wt. % of water. Between 0.01 mol. % and 10 mol. % of the monomeric patterns of the monomer P include at least one neutral monomer of formula (I): C(R1)(R3)═C(R2)—C(═O)—O—(CH2—CH2—O)n—R4 (I) wherein the radicals R1, R2 and R3, which are the same or different, independently represent a hydrogen atom or a linear or branched alkyl radical including between 1 and 4 carbon atoms, the radical R4 represents a linear or branched, saturated or unsaturated, aliphatic radical including between 6 and 30 carbon atoms, and n represents a number between 1 and 50. A production method and use are also described.