Ucb S.a.

Surface Specialties, S.a.

Amcor Flexibles Transpac N.v.

Cytec Surface Specialties, S.a.

Amcor Flexibles Transpac

Kris Buysens

Luc Moens

Daniel Maetens

Tony Malfait

Nele Knoops

Gerard Fonteyne

Erik Bögels

Erik Bölgels

The present invention relates to a tamper-evident push-through packaging secured against fraudulent reuse comprising: &#x2014;a polymer base web () comprising at least one pocket; &#x2014;a multilayer lidding film () covering said pocket, said multilayer lidding film () comprising on its seal side a coextruded polymer film, said coextruded polymer film comprising a push-through polymer layer () sealed on the base web by a permanent seal and a peelable protective polymer layer (), the polymers of both layers () being incompatible and in direct contact with each other, without interlayer, the adhesion between said push-through polymer layer () and said peelable protective polymer layer () being lower than the seal strength between said polymer base web () and said push-through polymer layer (), wherein, in use, the push-trough layer leaves a seal seam (), after removing the part of the push-trough layer () covering the pocket and wherein said protective layer () cannot be resealed by a heat sealing process on said seal seam ().

Tamper-evident push-through packaging

A radiation curable powder coating composition is disclosed, which comprises a blend of (meth)acryloyl group containing polyphenoxy resin, a (meth)acryloyl group containing resin other than the polyphenoxy resin and other than a (meth)acryloyl group containing amorphous polyester and, eventually, a (meth)acryloyl group containing monomer or oligomer. These powders give coatings with improved chemical resistance and flexibility.

Radiation curable powder coating compositions

Powder compositions hardenable by radiation usable for preparing paints or varnishes, specific amorphous polyesters which are comprised within these powder compositions, the use of the paints or varnishes comprising the powder compositions for coating an article as well as articles coated with the hardened paints or varnishes are disclosed. The powder compositions of the invention are especially suited for coating over metal and heat-sensitive substrates and combine, upon melting at low temperatures and curing by radiation, a series of properties such as good flow and film hardness along with an outstanding solvent resistance.

Radiation curable powder compositions

The invention concerns a polyester bearing tertiary carboxyl groups, characterised in that it consists of: (a) 8.1 to 35 moles of an aliphatic or cycloaliphatic of a polyol; (b) 9.1 to 36 moles of an aliphatic, cycloaliphatic or aromatic polycarboxylic acid; (c) 1.6 to 2.8 moles of an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is prepared in several steps, the first steps consisting in the preparation of a polyester by condensation between (a) an aliphatic or cycloaliphatic polyol, and (b) an aliphatic, cycloaliphatic or aromatic polycarboxylic acid, the final step consisting in condensing said polyester with (c) an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is used in thermosetting powder compositions, mixed with a crosslinking agent which is more particularly a &bgr;-hydroxylalkylarnide. Said compositions provide coatings with excellent surface appearance, good flexibility and good resistance to poor weather conditions.

Polyester containing tertiary carboxyl groups, process for its preparation and thermosetting powder compositions containing it

The invention concerns powder thermosetting coating compositions comprising (a) an amorphous polyester containing carboxyl groups, rich in isophthalic acid and neopentylglycol, optionally branched with a polycarboxylic acid or a polyol containing at least three functional groups; (b) a semicrystalline polyester containing carboxyl groups prepared from one or several saturated aliphatic dicarboxylic acids with linear chain, and from a saturated aliphatic diol with linear or cyclic chain optionally branched with a polycarboxylic acid or with a polyol containing at least three functional groups, and having a melting point (Tm) of at least 40&deg; C. and an acid value of 5 to 50 mg of KOH/g, and (c) a cross-linking agent. Said compositions are useful for preparing powder paints and varnishes providing excellent quality coatings whereof the brilliance, measured at an angle of 60&deg;, according to the ASTM D 523 standard is always less than 50%, that is half-gloss or matt coatings.

Powder thermosetting compositions for preparing coatings with low gloss finish

The invention concerns a polyester bearing tertiary carboxyl groups, characterised in that it consists of: (a) 8.1 to 35 moles of an aliphatic or cycloaliphatic of a polyol; (b) 9.1 to 36 moles of an aliphatic, cycloaliphatic or aromatic polycarboxylic acid; (c) 1.6 to 2.8 moles of an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is prepared in several steps, the first steps consisting in the preparation of a polyester by condensation between (a) an aliphatic or cycloaliphatic polyol, and (b) an aliphatic, cycloaliphatic or aromatic polycarboxylic acid, the final step consisting in condensing said polyester with (c) an aliphatic, cycloaliphatic or aromatic compound comprising a tertiary carboxyl group and either a primary or secondary carboxyl group, or a primary or secondary hydroxyl group. Said polyester is used in thermosetting powder compositions, mixed with a crosslinking agent which is more particularly a &bgr;-hydroxylalkylamide. Said compositions provide coatings with excellent surface appearance, good flexibility and good resistance to poor weather conditions.

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Oudenaarde, Belgium

Kris Buysens