Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Basf Se Corporation

Andreas Valet

Mario Slongo

Jean-Luc Birbaum

Jean Rody

Roger Meuwly

Vien V Toan

David G Leppard

Pascal Hayoz

Godwin Berner

Gerhard Rytz

Manfred Kohler

Franciszek Sitek

Manfred K&ouml;hler

Roland A E Winter

Ramanathan Ravichandran

Roland A Winter

Stephen Mark Andrews

Rita Pitteloud

Dirk Simon

Tunja Jung

Thomas Bolle

Markus Grob

Peter Simmendinger

Ljubomir Misev

Daniel Rogez

Rolf Tiefenauer

Walter Knupp

Norbert W Urms

Norbert W&uuml;ms

The Application relates to a method of curing various polymerisable compositions, comprising a suitable photoinitiator, the curing being effected by means of a plasma in plasma discharge chamber.

Curing of coating induced by plasma

Compounds of the general formula I' in which R, Rand Rindependently of one another, are H or &#x2014;Y&#x2014;T as defined in claimwhere T is a reactive group selected from OH, acryl- and methacryloxy and arylcarbonate groups, and further symbols are as defined in claimare effective as crosslinking agents for polymeric networks, especially as in flexographic printing plates, coatings, and plastic containers or films. Further provided is a method of protecting the content of a clear or lightly colored plastic container or film against the deleterious effects of ultraviolet radiation, which method comprises permanently and covalently bonding one or more UV absorbing moieties of a durable s-triazine UV absorber via condensation to a suitable polymer component.

2-hydroxyphenyl-s-triazine crosslinkers for polymer networks

Coating compositions stabilized against damage by light, heat and oxygen

By of means of a curing process combining thermal and UV curing it is possible, using compositons comprising (A) a coating system based on a polyacrylate polyol or polyester polyol with melamine, or a polyacrylate polyol and/or polyester with a blocked or unblocked polyisocyanate, or a carboxyl-, anhydride- or amino-functional polyester and/or polyacrylate with an epoxy-functional polyester or polyacrylate, (B) an OH, NH -,COOH-, Epoxy- or NCO-functional resin containing, in addition, at least one ethylenically unsaturated double bond, which is separated from the functional group by a spacer group, and (C)at least one photoinitiator, to obtain coatings having good surface properties.

Process for curing a polymerizable composition

Triazine, benzotriazole and benzophenone derivatives which are substituted or bridged with polyoxyalkylene groups, according to claim 1, and their use as UV absorbers, especially in photographic materials, in inks, including inkjet inks and printing inks, in transfer prints, in paints and varnishes, organic polymeric materials, plastics, rubber, glass, packaging materials, in sunscreens of cosmetic preparations and in skin protection compositions.

Polyoxyalkylene substituted and bridged benzotriazole derivatives

By means of a curing process combining thermal and UV curing it is possible, using compositions comprising (A) a coating system based on a polyacrylate polyol or polyester polyol with melamine, or a polyacrylate polyol and/or polyester polyol with a blocked or unblocked polyisocyanate, or a carboxyl-, anhydride- or amino-functional polyester and/or polyacrylate with an epoxy-functional polyester or polyacrylate, (B) an OH&mdash;, NH &mdash;, COOH&mdash;, epoxy- or NCO-functional resin containing, in addition, at least one ethylenically unsaturated double bond, which is separated from the functional group by a spacer group, and (C) at least one photoinitiator, to obtain coatings having good surface properties.

Stabilized organic material

Triazine, benzotriazole and benzophenone derivatives which are substituted or bridged with polyoxyalkylene groups, according to claim and their use as UV absorbers, especially in photographic materials, in inks, including inkjet inks and printing inks, in transfer prints, in paints and varnishes, organic polymeric materials, plastics, rubber, glass, packaging materials, in sunscreens of cosmetic preparations and in skin protection compositions.

Polyoxyalkylene substituted and bridged triazine, benzotriazole and benzophenone derivatives as UV absorbers

Photoinitiator mixtures and compositions with alkylphenylbisacylphosphine oxides

Alkylphenylbisacylphosphine oxides and photoinitiator mixtures

o-Hydroxyphenyl-s-triazines of the formula I

Compounds of the formula I ##STR1## in which R.sub.1 is C.sub.1 -C.sub.4 alkyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy and R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 independently of one another are hydrogen, halogen, C.sub.1 -C.sub.20 alkyl, cyclopentyl, cyclohexyl, C.sub.2 -C.sub.12 alkenyl, C.sub.2 -C.sub.18 alkyl which is interrupted by one or more oxygen atoms, or are phenyl-substituted C.sub.1 -C.sub.4 alkyl, or are phenyl which is unsubstituted or is mono- or disubstituted by C.sub.1 -C.sub.4 alkyl and/or C.sub.1 -C.sub.4 alkoxy with the provisos that at least one of the radicals R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 is other than hydrogen and that, if R.sub.1 and R.sub.2 are methyl, R.sub.3 and R.sub.6 are not methyl, and mixtures of such compounds with .alpha.-hydroxy ketones, benzophenones and .alpha.-amino ketones, are suitable as photoinitiators.

There are described compounds of formula A wherein

Hydroxyphenyltriazines

Compositions based on synthetic organic polymers or prepolymers are effectively stabilized against the damaging effects of light, oxygen and/or heat by addition of a compound of the formula I ##STR1## in which Z is a group of one of the formulae II or III, ##STR2## R.sub.7 and R.sub.17, independently of one another, are a radical of one of the formulae IV, V and VI ##STR3## and the remaining symbols are as defined in claim 1.

Oligomeric or polymeric siloxanes of the formula I ##STR1## if X is a monovalent radical, or which are correspondingly crosslinked, if X is a polyvalent radical, whose repeating units are arranged randomly or in blocks, which contain hydroxy-phenyl-diaryl-s-triazine moieties, are useful as stabilizers for organic material against damage thereto by light, oxygen and heat; and especially as stabilizers for coating materials.

Growing community of inventors

Binzen, Germany

Andreas Valet