Sun Chemical Corporation

Jürgen Dieker

Kai-Uwe W Gaudl

Derek Ronald Illsley

Shaun Lawrence Herlihy

Stephen Anthony Hall

Michael J Jurek

Robert Deighton

Lars Keller

Florian Maesing

Leonora Nurcaj-Dreshaj

Kai-Uwe W Gaudi

The present invention relates to amine synergists comprising the structure element of a substituted 1,3-propanedione and their use in radiation or energy curing by actinic light. The amine synergists of the present invention are particularly useful for printing and coating materials wherein low migration and/or low odor is required, such as food packaging and other sensitive packaging applications.

Amine synergists with UV—a absorption

The invention relates to photoactive oligomeric aminoketones for compositions and inks curable with ultraviolet (UV) light. The oligomeric ketones are particularly useful for printing or coating materials wherein a low migration of photoinitiators, and reduced transfer of ink from the printed to another surface are desired, such as, for example, food packaging.

Oligomeric aminoketones and their use as photoinitiators

The present invention is drawn to low migration energy-curable compositions including epoxy acrylates derived from the reaction of poly(alkylene oxide) containing glycidyl ethers with acrylic acid. The compositions of the invention are particularly useful for the printing or coating of food packaging.

Energy curable compositions comprising reaction products of poly(alkylene oxide)-containing glycidyl ethers and acrylic acid

Energy curable composition including partially acrylated polyols, and one or more monofunctional or multifunctional free-radically polymerizable ethylenically unsaturated monomer and/or oligomers.

Energy curable compositions comprising partially acrylated polyols

The present invention provides water-soluble or water-dispersible polyester resins prepared by depolymerizing a terephthalate plastic material in an alcoholysis/glycolysis reaction, and re-polymerizing the product by reacting with a polybasic acid and/or anhydride. The polyester resins of the invention contain 70% to 95% by weight of the terephthalate material, based on the total weight of the composition. The polyester resins of the present invention are useful as dispersants, for example in pigment preparations, and as binders in let-down varnishes, inks, coatings, etc, and as adhesion promoters in aqueous-based inks.

Water-soluble or dispersible polyester resins made from terephthalate plastic materials useful as dispersant resins for inks

Energy curable compositions including polyols, and any blend of ethylenically unsaturated monomers and oligomers. The polyols of the invention are essentially free of any ethylenically unsaturated groups. It is preferred that the polyol substances according to the invention have greater than one hydroxy group and preferably have boiling points in excess of 170&#xb0; C. The compositions of the invention are particularly useful for the printing or coating of food packaging and may be applied via any printing or coating method, although inkjet printing is a preferred method.

Energy curable compositions comprising polyols

The invention relates to photoactive oligomeric aminoketones of general Formulae I and II, for compositions and inks curable with ultraviolet (UV) light. The oligomeric aminoketones of the general Formula I are made by condensation of aminoketones with aldehydes, and aminoketones of the general Formula II are made by acylation of aromatic amines with phthalic anhydride, followed by esterification with a polyol. The aminoketones provide good curability of energy curable coatings and inks with UV-A light, and are proposed for photoinitiator systems for low migration inks. 

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Karlstein am Main, Germany

Jürgen Dieker