Covestro (netherlands) B.v.

Dsm IP Assets B.v.

Alfred Jean Paul Bückmann

Gerardus Cornelis Overbeek

Daan Van Der Zwaag

Patrick Johannes Maria Stals

Jan Van Riel

Stella Josette Van Dijk

Michael Arnoldus Jacobus Schellekens

Josephus Christiaan Van Oorschot

Jurgen Scheerder

Jacobus Willem Griffioen

Danny Visser

Rob Looijmans

Johannes Jacobus Julius Van Den Biggelaar

Kristel De Vos-Verschuren

Hermanus Adrianus Langermans

Kristel De Vos Verschuren

The present invention relates to a multi-aziridine compound having: a) at least 2 of the following structural units (A) whereby Ris H; Rand Rare independently chosen from H, a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; Ris chosen from a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; or Rand R(in case Ris different than H) may be part of the same cyclic group containing from 3 to 8 carbon atoms; R' and R″ are independently H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms; and b) a molecular weight of at least 600 Daltons, wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.

Multi-aziridine compound

The present invention relates to a multi-aziridine crosslinker composition, characterized in that the multi-aziridine crosslinker composition is an aqueous dispersion having a pH ranging from 8 to 14 and comprises a multi-aziridine compound in dispersed form, wherein said multi-aziridine compound has: a. from 2 to 6 of the following structural units A: whereby Ris H, Rand Rare independently chosen from H or an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, R a is an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, m is 1, b. one or more linking chains wherein each one of these linking chains links two of the structural units A; and c. a molecular weight in the range from 500 to 10000 Daltons wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.

Waterborne crosslinker composition

The present invention relates to a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): whereby R′, R″ are as defined herein m is an integer from 1 to 6; b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 840 Daltons to 5000 Daltons. The multi-aziridine compound can be used for example for crosslinking of for example carboxylic acid functional polymers dissolved and/or dispersed in an aqueous medium.

The present invention relates to a two-component coating system comprising a first component and a second component each of which is separate and distinct from each other, wherein the first component comprises a carboxylic acid functional polymer dissolved and/or dispersed in an aqueous medium, and the second component comprises a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): b) whereby m is an integer from 1 to 8; and R' and R″ are both H b) one or more linking chains wherein each one of these linking chains links two of the structural units A; c) one or more connecting groups whereby each one of the connecting groups connects two of the structural units A; and d) a molecular weight in the range from 840 Daltons to 5000 Daltons, wherein the molecular weight is measured using MALDI-TOF mass spectrometry.

Two-component coating system

The present invention relates to a multi-aziridine crosslinker composition, including an aqueous dispersion having a pH ranging from 9 to 14 and including a multi-aziridine compound in dispersed form. The multi-aziridine compound has: a. from 2 to 6 of the following structural units A: (A) whereby R1, R2, R3 and R4 are H; m is 1, R′ and R″ are according to (1) or (2): (2) R′=H or an aliphatic hydrocarbon group containing from 1 to 14 carbon atoms, and R″=an alkyl group containing from 1 to 4 carbon atoms, CH2-O—(C═O)—R′″ or CH2-O—R″″, whereby R′″ is an alkyl group containing from 4 to 12 carbon atoms and R″″ is an alkyl group containing from 1 to 14 carbon atoms, (2) R′ and R″ form together a saturated cycloaliphatic hydrocarbon group containing from 5 to 8 carbon atoms.

The present invention relates to a multi-aziridine compound having: a) at least 2 of the following structural units (A): (A) whereby Ris H; Rand Rare independently chosen from H, a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; Ris chosen from a linear group containing from 1 to 8 carbon atoms and optionally containing one or more heteroatoms, a branched or cyclic group containing from 3 to 8 carbon atoms and optionally containing one or more heteroatoms, phenyl, benzyl, or pyridinyl; or Rand R(in case Ris different than H) may be part of the same cyclic group containing from 3 to 8 carbon atoms; R' and R″ are independently H or an aliphatic hydrocarbon group containing from 1 to 12 carbon atoms; and b) a molecular weight from 600 to 20000 Daltons, wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.

The present invention relates to a multi-aziridine compound having: ⋅a) from 2 to 6 of the following structural units (A): whereby Ris H, Rand Rare independently chosen from H or an aliphatic hydrocarbon group containing from 1-4 carbon atoms, Ris an aliphatic hydrocarbon group containing from 1-4 carbon atoms, R'═H or an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms; R″ and R′″ are independently chosen from an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, a cycloaliphatic hydrocarbon group containing from 4 to 12 carbon atoms or an aromatic hydrocarbon group containing from 6 to 12 carbon atoms, b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 600 Daltons to 5000 Daltons.

The present invention relates to a multi-aziridine compound having: The multi-aziridine compound can be used for example for crosslinking of for example carboxylic acid functional polymers dissolved and/or dispersed in an aqueous medium.

The present invention relates to a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): (A) whereby R′, R″, R, R, Rand Rare as defined herein m is an integer from 1 to 6; b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 600 Daltons to 5000 Daltons. The multi-aziridine compound can be used for example for crosslinking of for example carboxylic acid functional polymers dissolved and/or dispersed in an aqueous medium.

The current invention relates to an one-pack aqueous coating composition comprising dispersed carbonyl functional vinyl polymer(s) particles, characterized in that the coating composition further comprises carbodihydrazide, whereby (i) the equivalent molar ratio of hydrazide groups to carbonyl groups is from 0.1 to 0.95, (ii) the ratio of number-average molecular weight of the carbonyl functional vinyl polymer(s) to acid value of the carbonyl functional vinyl polymer(s) is higher than 400, and (iii) the acid value of the carbonyl functional vinyl polymer(s) is from 2 to 100 mg KOH/gram carbonyl functional vinyl polymer.

Aqueous crosslinkable coating composition

A radiation curable liquid coating composition comprising 1 to 90 wt % of at least one multifunctional (meth)acrylated oligomer; 10 to 80 wt % of at least one Cto Cmonofunctional aliphatic alkyl (meth)acrylate; 0 to 40 wt % of at least one monomeric reactive diluent wherein (a)+(b)+(c)=100%; and additionally comprising 0.1 to 15 wt % of matting agent by weight of the coating composition.

Radiation curable liquid composition for low gloss coatings

A radiation curable composition comprising 15 to 85 wt % of at least one solvent comprising &#x2266;20 wt % of water; 5 to 50 wt % of at least one radiation curable material having a Mn in the range of from 50 to 10,000 g/mol; and 10 to 70 wt % of at least one polyurethane having a Mw in the range of from 4,000 to 70,000 g/mol, the polyurethane having 0 to 5 wt % of isocyanate-reactive component(s) bearing ionic or potentially ionic water-dispersing groups and a free isocyanate group content &#x2266;0.5 wt %.

Radiation curable composition

A conductive ink comprising 10 to 75 wt % of at least one solvent comprising &#x2266;20 wt % water; 0 to 50 wt % of at least one radiation curable material having a Mn in the range of from 50 to 10,000 g/mol; 5 to 70 wt % of at least one polyurethane having a Mw in the range of from 4,000 to 70,000 g/mol, 0 to 5 wt % of isocyanate-reactive component(s) bearing ionic or potentially ionic water-dispersing groups and a free isocyanate group content &#x3c;0.5 wt % and 20 to 85 wt % of a conductive material.

Growing community of inventors

Waalwijk, Netherlands

Alfred Jean Paul Bückmann