Allnex Netherlands B.v.

Nuplex Resins B.v.

Other

Ferry Ludovicus Thys

Richard Hendrikus Gerrit Brinkhuis

Elwin Aloysius Cornelius Adrianus De Wolf

Antonius Johannes Wilhelmus Buser

Petrus Johannes Maria David Elfrink

Michael Anthony Gessner

Nicole Mangnus-Verhagen

Rien Goedegebuure

Mohamad D Shalati

Dirk Emiel Paula Mestach

Ramesh Subramanian

William Jay Degooyer

Paulus Jozef Dolphijn

David James Sauer

James Henry McBee

The invention relates to the use of Real Michael Addition (RMA) crosslinkable composition for the preparation of a floor coating, to special RMA crosslinkable compositions with long working time and very short service time and low VOC and to specific floor compositions, in particular for use in high build floor coating applications.

Floor coating compositions

The invention relates to a process for the preparation of a RMA crosslinkable composition comprising at least one crosslinkable component comprising reactive components A and B each comprising at least 2 reactive groups wherein the at least 2 reactive groups of component A are acidic protons C&#x2014;H in activated methylene or methine groups and the at least 2 reactive groups of component B are activated unsaturated groups C&#x2550;C and base catalyst C and one or more N&#x2014;H group containing reactivity moderating component D that are also a Michael addition donor reactable with component B under the action of catalyst C, characterized in that the one or more reactivity moderating components D have a melting temperature above 60&#xb0; C. and is first dissolved in one or more crosslinkable components comprising reactive components A or B and the obtained pre-dissolved product is later mixed with other components of the RMA crosslinkable composition.

Process for the manufacture of a crosslinkable composition

The invention relates to an adhesion promotor for improving adhesion on a substrate surface of an RMA crosslink able composition comprising one or more crosslinkable components comprising a reactive component A with at least two acidic protons C&#x2014;H in activated methylene or methine groups, a reactive component B with at least two activated unsaturated C&#x2550;C groups, a catalyst C for catalyzing the RMA crosslinking reaction between components A and B, said adhesion promotor P comprising a moiety comprising one or more functional groups X or precursors thereof readable with component A or component B and a moiety comprising one or more functional groups Y or precursors thereof that adsorb or react with the substrate surface not being an alkoxysilane group. The invention also relates to a RMA crosslinkable composition, also in the form of a kit of parts, to a premix for use as a part in the kit of parts.

Adhesion promotor for real michael addition crosslinkable compositions

A method for applying a RMA crosslinked coating with improved adhesion, comprising the steps of applying on the substrate surface a layer of a modified epoxy primer comprising an epoxy functional polymer binder and a crosslinker, wherein adhesion of the RMA crosslinked coating to the epoxy primer layer is improved by said primer comprising after curing functional groups X reactable with crosslinkable components of the RMA crosslinkable composition or a precursor of functional groups X, preferably a moisture deblockable precursor. The invention also relates to modified epoxy primers, compositions for improving adhesion of epoxy primers and use thereof to improve adhesion of RMA crosslinkable coatings.

Method for applying RMA crosslinkable coating on modified epoxy primer coating

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&#x2014;H) in activated methylene or methine groups and the at least 2 reactive groups of component B are activated unsaturated groups (C&#x2550;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.

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

A crosslinkable composition crosslinkable by Real Michael Addition (RMA) reaction comprising a component with at least 2 activated unsaturated groups and a component with at least 2 acidic protons C&#x2014;H in activated methylene or methine which components can react to form a crosslinked network.

Composition crosslinkable by Real Michael Addition (RMA) reaction

The present invention relates to a crosslinkable composition crosslinkable by Real Michael Addition (RMA) reaction comprising a component with at least 2 activated unsaturated groups (hereafter referred to as the RMA acceptor groups) and a component with at least 2 acidic protons C&#x2014;H in activated methylene or methane groups (hereafter referred to as the RMA donor groups) which components can react to form a crosslinked network.

Composition crosslinkable by real michael addition (RMA) reaction

An RMA crosslinkable composition for making thick coating layers having at least one crosslinkable component comprising reactive components A and B each including at least 2 reactive groups wherein the at least 2 reactive groups of component A are acidic protons (C&#x2014;H) in activated methylene or methine groups, and the at least 2 reactive groups of component B are activated unsaturated groups (C&#x2550;C), to achieve crosslinking by Real Michael Addition reaction, the composition further including a base catalyst (C), an X&#x2014;H group containing component (D) that is also a Michael addition donor reactable with component B under the action of catalyst C, wherein X is C, N, P, O or S and a sag control component (E). A crosslinkable composition is also disclosed for preparing thick coating layers having a dry thickness of at least 70 mu having a surface appearance and hardness of the resulting cured composition.

Crosslinkable composition

A crosslinkable composition including a component A with at least 2 acidic protons C&#x2014;H in activated methylene or methine groups (the RMA donor group), and a component B with at least 2 activated unsaturated groups (the RMA acceptor group), and a catalyst system C that contains, or is able to generate a basic catalyst capable of activating the RMA reaction between components A and B, characterised in that the cross-linkable composition further includes an X&#x2014;H group containing component D that is also a Michael addition donor reactable with component B under the action of catalyst C, wherein X is N, P, O, S or wherein X is C as part of an acidic methyl (CH3) group. A component D and catalyst additive mixtures for the manufacture of RMA crosslinkable composition.

Crosslinkable composition crosslinkable by real michael addition (RMA) reaction

Reactive, non-isocyanate coating compositions prepared by mixing epoxy, tertiary amine, anhydride, hydroxy- and, optionally, acid functional compounds, a system of making the coating composition, a method of coating the composition on a substrate and a substrate coated with the composition.

Growing community of inventors

Stevens-Woluwe, Belgium

Ferry Ludovicus Thys