US 10,647,876 B2Granted

Crosslinkable composition cross-linkable by real Michael addition reaction and resins for use in said composition

AssigneeAllnex Netherlands B.V.

InventorsRichard Hendrikus Gerrit Brinkhuis, Antonius Johannes Wilhelmus Buser, Petrus Johannes Maria David Elfrink, Ferry Ludovicus Thys, Nicole Mangnus-Verhagen, Elwin Aloysius Cornelius Adrianus De Wolf

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Abstract

An RMA crosslinkable composition having at least one crosslinkable component including reactive components A and B each including at least 2 reactive groups, the at least 2 reactive groups of component A being acidic protons (C—H) in activated methylene or methine groups and the at least 2 reactive groups of component B are activated unsaturated groups (C═C) and a base catalyst (C) which reactive components A and B crosslink by Real Michael Addition (RMA) reaction under action of the base catalyst, characterised in that the at least one crosslinkable component including reactive components A and B in the composition have a total hydroxy number of less than 60, preferably less than 40 and more preferably less than 20 mg KOH/g solids. Further, specific resins A and B having a low hydroxy number for use in RMA cross-linkable compositions and a process for the manufacture thereof.

Claims13

Dependent claims

A polymeric or oligomeric resin A, comprising one or more reactive components A having a structure according to formula 1:

wherein R is hydrogen or an alkyl, aralkyl or aryl substituent and Y and Y′ are same or different alkyl, aralkyl or aryl (R*), alkoxy (—OR*) groups or a polymer backbone or wherein the —C(═O)—Y and/or —C(═O)—Y′ is replaced by CN or phenyl,
wherein the polymeric or oligomeric resin A is a polyester, polyether, polyepoxy, polyurethane or polycarbonate, comprising reactive component A,
wherein the resin A is produced by transesterification of a polyester, polyether, polyepoxy, polyurethane, or polycarbonate polyol with an acetoacetate or malonate reactive component A in the form of a carboxylic acid ester,
and wherein the obtained resin A has a hydroxy number of less than 60 mg KOH/g solids, has a number average molecular weight between 100-20000 g/mol, an equivalent weight per reactive component A of 100-2000 g/mol and an acid number less than 4 mg KOH/g.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 15/889,291Filed 6 Feb 2018 · division
Priority: EP 111844397 Oct 2011
Published: US 2018/0155573 A17 Jun 2018
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

C09D 167/00
Coating compositions based on polyesters obtained by reactions forming a carboxylic ester
B01J 31/0205
Oxygen-containing compounds: comprising carbonyl groups or oxygen-containing derivatives, e.g. acetals, ketals, cyclic peroxides
B01J 31/0239
Nitrogen containing compounds: quaternary ammonium compounds
B01J 31/0268
Phosphines or phosphonium compounds, i.e. phosphorus bonded to at least one carbon atom, including e.g. sp2-hybridised phosphorus compounds such…:…

Family

PCT/EP2012/069904Parent of this continuation · filed 8 Oct 2012
Application14/246,229Parent of this division · filed 7 Apr 2014
US 2018/0155573 A1Pre-grant publication · published 7 Jun 2018
Application14/246,229Parent of this continuation
US 10,597,556 B2Related patent
US 2014/0221542 A1Published application
US 10,647,876 B2This patent

From the US filing history. Foreign family members aren’t listed.