Particles containing reversible covalent bonds which may be sequentially formed and broken multiple times

US9765163B2 · kind B2 · utility

Assignees

• ECOLE SUPERIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS · FR
• Universite Pierre Et Marie Curie (Paris 6) · FR
• CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE · FR

Inventors

• Renaud Nicolay · Verrières-le-Buisson, FR
• Corinne Soulie-Ziakovic · Paris, FR
• Ludwik Leibler · Paris, FR
• Alexandre Prevoteau · Paris, FR
• Nebewia Griffete · Livry-Gargan, FR

Key dates

• Filing date: Oct 23, 2012
• Grant date: Sep 19, 2017
• Expiry date: Oct 23, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B82Y30/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention is directed to a particle-containing entity P-(A--B-M)x wherein P is a solid particle attached to at least one polymer M through one or several reversible covalent bonds -A---B-, wherein A and B are functional groups respectively grafted to P and M thus forming the P-(A---B-M)x particle-containing entity with x being greater than or equal to 1, M has a degree of polymerization comprised between 5 and 1000, preferably ranging from 5 to 500, and wherein the reversible covalent bond -A---B- is chosen among an imine, a disulfide, a boronic ester or an acetal. The invention is also directed to a method of preparing this particle-containing entity, a method for sequentially forming and breaking the reversible covalent bond -A---B- in said particle-containing entity P-(A---B-M)x and dispersions comprising same.