Kuraray Co., Ltd.

Bayer Materialscience Ag

Universitéde Liége

Luxembourg Institute of Science and Technology

Allnex IP S.a.r.l.

Universitè Catholique De Louvain

Christophe Detrembleur

Wolfgang Fischer

Jan Weikard

Dorota Greszta-Franz

Frank Richter

Germaine Zocchi

Holger Mundstock

Jörg Schmitz

Kazuhiko Maekawa

Takumi Takayama

Christine Jerome

Antoine Debuigne

Yusuke Amano

Patrick Choquet

Laetitia Urbanczyk

Nicolas Boscher

Maryline Moreno-Couranjou

Aurelia Charlot

Cecile Vandeweerdt

Cécile Van De Weerdt

Christelle Vreuls

Rodolphe Mauchauffe

Thomas Pardoen

Isabelle Huynen

Robert Jerome

Christian Bailly

Quentin Furnemont

Nicolas Quievy

Isabel Molenberg

Stéphanie Eggermont

A polyvinyl alcohol has a number-average molecular weight (Mn) from 4,400 to 440,000, a molecular weight distribution (Mw/Mn) from 1.05 to 1.70, a degree of saponification from 80 to 99.99 mol %, wherein the polyvinyl alcohol contains an end group represented by a formula (I) below, and a molar ratio (X) of the end group based on total monomer units and the number-average molecular weight (Mn) satisfy a formula (1) below. Such a polyvinyl alcohol has a narrow molecular weight distribution and a high number-average molecular weight with hue good. (In the formula, Rdenotes an optionally substituted aromatic group having a carbon number from 6 to 20, and Rdenotes a hydrogen atom, an alkyl group having a carbon number from 1 to 20, or an optionally substituted aromatic group having a carbon number from 6 to 20.)X&#xb7;Mn/44&#x2265;0.5&#x2003;&#x2003;(1)

Polyvinyl alcohol and method for producing polyvinyl alcohol

A solvent-free plasma method for depositing an adherent catechol and/or quinone functionalised layer to an inorganic or organic substrate from a precursor which comprises at least a quinone group; a protected or unprotected catechol group; a molecule substituted by a quinone group and/or a protected or unprotected catechol group; and/or a natural or synthetic derivative of a catechol group and/or a quinone group; wherein the quinone group is a 1,2-benzoquinone group and the catechol group is a 1,-dihydroxybenzene group.

Plasma deposition method for catechol/quinone functionalised layers

A polyvinyl alcohol is produced in a method comprising: a polymerization step comprising polymerizing vinyl ester monomers by controlled radical polymerization in the presence of a radical initiator and an organic cobalt complex to obtain a polymer solution containing a polyvinyl ester; an extraction step comprising extracting a cobalt complex from the polymer solution by contacting an aqueous solution containing a water-soluble ligand with the polymer solution; and a saponification step comprising saponifying the polyvinyl ester after the extraction step to obtain a polyvinyl alcohol. A method for producing a polyvinyl alcohol is thus provided that has a narrow molecular weight distribution and a high number-average molecular weight with good hue and further good solubility in water.

Polyvinyl alcohol and method for producing same

The invention relates to a process for preparing binders which contain 1) allophanate groups, 2) groups that react with ethylenically unsaturated compounds with polymerization on exposure to actinic radiation (radiation-curing groups) and 3) optionally NCO-reactive groups, by reacting at temperatures &#x2266;130&#xb0; C. The present invention also relates to the binders obtained by the process of the invention.

Radiation-curing binders and a process for their preparation

The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting, at temperatures of &#x2266;130&#xb0; C., A) one or more compounds containing uretdione groups with B) one or more OH-functional compounds which contain groups which react, with polymerization, with ethylenically unsaturated compounds on exposure to actinic radiation (radiation-curing groups), C) optionally NCO-reactive compounds other than B), in the presence of D) a catalyst containing at least one zinc compound, to form allophanate groups by opening the uretdione ring. The present invention also relates to the binders obtained by the process of the invention and to coating compositions containing these binders.

Low viscosity allophanates containing actinically curable groups

The present invention relates to a process for preparing radiation-curing binders containing allophanate groups by reacting at temperatures of &#x2266;130&#xb0; C.

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Liege, Belgium

Christophe Detrembleur