Multifunctional acrylic oligomers of branched structure, by polyaddition between multifunctional amines and acrylates

US10125223B2 · kind B2 · utility

Assignee

• ARKEMA FRANCE · FR

Inventors

• Philippe CICERON · Senlis, FR
• Charles BOURROUSSE · Paris, FR
• Catherine M. Leroy · Lille, FR

Key dates

• Filing date: Jun 15, 2015
• Grant date: Nov 13, 2018
• Expiry date: Jun 27, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D4/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An acrylated oligomer, having a number-average acrylate functionality fo>2, of branched structure results from the polyaddition reaction of at least one amine A) having a functionality fA of N—H groups of at least 2, to at least one multifunctional acrylate B) having a functionality fB of acrylate groups of at least 2, with an average functionality per mole of all of the components A)+B) of greater than 2 and with the oligomer comprising in its repeating unit structure at least one —O2C—CH2—CH2—N═ aminoacrylate group resulting from the polyaddition and with a content of nitrogen resulting from the amine A) of greater than or equal to 0.35 mEq/g and an initial ratio r=acrylate/N—H of between rinf and 1.1 rsup with rinf=0.90*(fA−1)*(fB−1) and rsup=2*fA+2*fB−6 and the average number nav of repeating units per oligomer nav=1/[(r*fA/fB)+1−fA].