Sun Chemical Corporation

David Biro

Mikhail Laksin

Mathew Charles Mathew

Katsuji Takahashi

Hisatomo Yonehara

Yoshinobu Sakurai

Subhankar Chatterjee

Jean Dominique Turgis

Juanita M Parris

John Rooney

Ryszard Sprycha

Doreen E Smith

Aldo Bruccoleri

Gregory Pace

The present invention provides energy curable compositions comprising self-initiating oligomers, amine synergists and Group IV metal chelates. The compositions optionally comprise acrylate monomers having carbonate ester, carbamate, or oxazolidinone groups. The compositions of the present invention exhibit improved cure, and are suitable for packaging, such as food packaging.

Self-initiated energy curable ink compositions

The present invention provides energy curable compositions that are curable using UV LED radiation. The compositions comprise vinyl methyl oxazolidinone (VMOX), as well as other components generally found in energy curable inks, such as ethylenically unsaturated monomers (in addition to VMOX), acrylated oligomers, and photoinitiators. The compositions are suitable for high speed flexographic or gravure printing.

LED energy curable ink compositions

Described herein are inks and coating compositions curable by exposure to UV energy sources including UV-LED energy sources, which include a polymerizable component selected from an ethylenically unsaturated materials, a photoinitiator component that is one or more photoinitiators, one of which is an acyl phosphine oxide photoinitiator; and a Group IV metal chelating agent. Improved cured is realized for the described inks and coating compositions.

Group IV metal chelates and their use in radiation curable ink and coating compositions

The present invention provides energy curable ink and coating compositions that comprise polymerizable compounds, photoinitiators, and colorants. The polymerizable compounds comprise one or more polymerizable monomers and/or oligomers, wherein at least a portion is 3-methyl-1,5-pentanediol diacrylate. The inks and coatings of the invention exhibit excellent print properties after UV-LED, standard UV mercury vapor lamp, and electron beam cure.

Low migration energy curable inks

An apparatus and method for measuring the drying rate of a liquid or liquid film in air or other gaseous media by either: a) measuring changes in the print density of the liquid; b) measuring changes in the dynamic surface tension of the liquid; c) measuring the differential pressure between an inert gas required to displace a sample of the liquid drawn into a capillary tube from a reservoir of the liquid and the pressure required for a bubble of the gas to form in the reservoir; and d) measuring the electrical conductance or resistance of the liquid.

Apparatus and method for quantitatively measuring liquid film drying rates on substrates

The present invention provides a method for producing a low-odor, printed packaging material and the printed packaging material produced thereby. The printed packaging material of the present invention is especially suitable for packaging of substances, such as food, drugs and tobacco, which require low odor from printing inks. In this process, the printed ink is activated by exposure to actinic radiation, such as UV light, before an actinic-radiation curable coating is applied thereto. The exposure of the printed ink to UV light reduces residual solvent content and odor of the packaging material and improves the friction resistance and gloss of the printed images. Furthermore, the exposure of the printed packaging material to UV light provides an additional benefit of reducing microbial count, thereby extending a shelf-life of the packaged substance, such as food and drugs.

Method of manufacturing of low-odor packaging materials

A method for producing a solvent resistant, low-extractable, film from an actinic radiation curable homogenous aqueous composition containing a water soluble compound, having at least one alpha, beta-ethylenically unsaturated radiation polymerizable double bond, and water as essential components.

Radiation curable aqueous compositions

A method for controlling the cure rate of a water compatible non emulsion, non dispersing, actinic radiation curable composition containing a maleimide derivative

Water compatible energy curable compositions containing malemide derivatives

Active water compatible actinic radiation curable printing ink or coating compositions comprised of maleimide derivatives, water compatible resins and water, which are capable of curing at a practical intensity and energy level and a method for curing same.

A method for curing an active single phase water compatible actinic radiation curable composition, comprising: irradiating a water compatible non emulsion, non dispersing compound, water, and a maleimide derivative.

A method for producing a low-extractable film packaging from an actinic radiation curable aqueous composition containing a water soluble compound having at least one &agr;, &bgr;-ethylenically unsaturated, radiation polymerizable group and water as essential components carried out by applying the aqueous composition to a surface which is then irradiated in a single step with actinic radiation in the presence of the water thereby forming a cured film wherein less than 50 ppb of the water soluble compound or its residual components are extractable by a food simulant.

Radiation curable aqueous compositions for low extractable film packaging

Active water compatible energy curable compositions comprised of maleimide derivatives, water compatible resins and water which are capable of curing at a practical intensity and energy level and a method for curing same.

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Rockaway, NJ, United States of America

David Biro