Powder compositions of crystalline polyesters containing end methacrylyl groups

Polyester containing tertiary carboxyl groups, preparation method and thermosetting powder compositions containing same

Thermosetting power compositions for the preparation of low-gloss coatings

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° 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°, according to the ASTM D 523 standard is always less than 50%, that is half-gloss or matt coatings.

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

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 β-hydroxylalkylarnide. Said compositions provide coatings with excellent surface appearance, good flexibility and good resistance to poor weather conditions.

Powder compositions with semi-crystalline polyester and acrylic copolymer base containing ethylenically unsaturated groups

Radiation-curable powder compositions, usable as paint or varnish, which comprise a mixture of at least one semi-crystalline polyester containing end methacryloyl groups and of at least one acrylic copolymer containing ethylenically unsaturated groups, these polyesters comprising the reaction products of a glycidyl methacrylate and of a semi-crystalline polyester containing end carboxyl groups.

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing semi-crystalline polyester, at least 10 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give low gloss coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing aliphatic semi-crystalline polyester, an optional and different carboxyl group containing semi-crystalline polyester, at least 5 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give semi-matt coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Radiation curable powder coating compositions

The present invention relates to powder compositions curable by ultraviolet irradiation or by accelerated electron beams. These powder compositions comprise at least one ethylenically unsaturated resin, and lend to the production of paint and varnish coatings exhibiting a unique combination of properties, inter alia good flow and mechanical properties and above all outstanding adhesion to metal substrates, persisting on ageing.

Powder compositions with semicrystalline polyester and acrylic copolymer base containing ethylenically unsaturate groups

Thermosetting powder compositions for coatings

The present invention relates to an isophthalic acid rich carboxyl functionalized polyester, containing linear chain aliphatic (poly)ether diols, and to thermosetting powder compositions comprising a mixture of the polyester with a beta-hydroxylkylamide group containing cross-linking agent. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes for the making of coatings and to coating obtained therewith.

Powder thermosetting compositions for preparing coatings with low gloss finish

Thermosetting acryl powder coating

The present invention relates to a composition for thermosetting powder coating having excellent low temperature curability and good storage stability, being capable of giving a coating with good appearance, flexibility and solvent resistance. The powder coating composition comprises a blend of two different glycidyl group containing acrylic copolymers and a polycarboxylic acid curing agent.

Radiation curable low gloss powder coating compositions

A radiation curable powder coating composition for preparing low gloss coatings, comprises as a binder a mixture of 30 to 90 weight % of one or more (meth)acryloyl group containing amorphous polyester resins having an unsaturated equivalent weight of more than 700 g/double bond and 10 to 70 weight % of one or more (meth)acryloyl group containing acrylic copolymers having an unsaturated equivalent weight of less than 700 g/double bond.

Radiation curable powder coating compositions

The invention relates to powder compositions hardenable by radiation usable for preparing paints and varnishes. These powder compositions contain an ethylenically unsaturated resin, a phosphorous containing compound and, eventually, a monomer or oligomer The powder compositions of the invention are especially suited for coating over metal and combine upon melting at low temperatures and curing by radiation a series of properties such as good flow and film flexibility along with an outstanding adhesion to the substrate.

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing aliphatic semi-crystalline polyester, an optional and different carboxyl group containing semi-crystalline polyester, at least 5 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give semi-matt coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Powder compositions with semicrystalline polyester and amorphous polyester base containing terminal methacryloyl groups

Powdered thermosetting compositions for coatings

Powder compositions

A thermosetting and/or radiation curable powder with a binder prepared from a polyester (PE) obtained from a polyol with lower amounts of neopentyl glycol (NPG). The powder forms smooth defect free coats and is resistant to contamination from conventional NPU-rich PE.

Powder composition

There is described a powder coating composition suitable for food contact use comprising a mix of: (A) a first polyester that is amorphous and COOH functional being obtained from IPA and/or TPA and no more than 10 mole % neopentyl glycol (NPG); (B) a second optional COOH functional polyester obtained from analiphatic diacid and analiphatic diol, and (C) a curing agent that comprises functional groups reactable with the COOH of the polyester(s). The powders are suitable for coating the interior of metal cans especially those holding alcoholic beverages.

Coatings for ceramic substrates

A process for making highly mechanical and chemical resistant ceramic substrates, especially tiles is provided, wherein the process comprises coating said substrates with a base coat layer of a thermosetting or radiation curable powder coating composition, curing the applied powder coating composition, and applying a further layer of a liquid coating composition and curing the composition by exposure to heat. Coated ceramic substrates, in particular tiles are also provided.

COATINGS FOR CERAMIC SUBSTRATES

A process for making highly mechanical and chemical resistant ceramic substrates, especially tiles is provided, wherein the process comprises coating said substrates with a base coat layer of a thermosetting or radiation curable powder coating composition, curing the applied powder coating composition, and applying a further layer of a liquid coating composition and curing the composition by exposure to heat. Coated ceramic substrates, in particular tiles are also provided. 1. A process for coating ceramic substrates which process comprises applying as a base coat layer to the substrate a powder coating composition , curing the applied composition; and applying as a further layer a liquid coating composition , and curing the applied liquid composition by exposure to heat.2. The process according to claim 1 , wherein the powder coating composition comprises at least one polyester having carboxy- and/or hydroxy-functional groups and at least one hardener having functional groups reactable with the polyester functional groups.3. The process according to claim 2 , wherein said polyester is selected from a carboxy functionalized polyester and the hardener is selected from polyepoxy compounds claim 2 , β(beta)-hydroxyalkylamide containing compounds and their mixtures; or wherein said polyester is selected from a hydroxy functionalized polyester and the hardener is selected from blocked isocyanate cross-linking agents.4. The process according to claim 1 , wherein the powder coating composition is a radiation curable powder coating composition which comprises at least one (meth)acryloyl group containing polyester and/or at least one (meth)acryloyl group containing epoxy resin.5. The process according to claim 1 , wherein the ceramic substrate is first preheated to a temperature above the glass transition temperature of the powder coating composition claim 1 , after which the powder coating composition is applied to the substrate and the ceramic substrate containing the ...

Low temperature cure powder coating compositions

The present invention relates to a powder coating composition for low temperature cure which comprises a mixture of a carboxylic acid group containing first polyester; at least one of a second polyester having a glass transition temperature 45° C. and/or a crystalline polycarboxylic acid; a glycidyl group containing acrylic copolymer; a further compound and/or resin having functional groups readable with the carboxylic acid groups; and a thermosetting curing catalyst. These thermosetting powder coatings are designed for coating heat-sensitive substrates such as wood, fiber board and other materials which can not withstand the excessive heat/time conditions necessary to cure traditional coatings. The powder coatings of the invention, when cured at temperatures below 150° C., produce a finish which exhibits a high gloss, smooth surface along with an outstanding hardness and weatherability.

Radiation curable powder coating compositions

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

Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising:a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; andb) hydrolyzing the quaternary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

Powder coating compositions

The present invention relates to powdered thermosetting coating compositions comprising a co-reactable mixture of a glycidyl group containing acrylic copolymer, a carboxylic acid group containing acrylic copolymer, a carboxylic acid group containing polyester, all 3 compounds having a high Tg, along with a low Tg counter part 1 to 3 of these compounds, and a thermosetting catalyst. These thermosetting powder coatings particularly are designed for coating heat-sensitive substrates and produce a finish which exhibits reduced gloss.

POLYMER COMPOSITIONS

There is described a powder composition curable by radiation and thermally, comprising a mixture of (a) from about 1% to about 15%, by weight of the mixture, of a polyester of T g ≦40° C. obtained and/or obtainable by reacting, (i) an acid component comprising (A) from about 70 to about 100 mol % of a first poly carboxylic acid; and (B) from about 0 to about 30 mol % of an optional second poly carboxylic acid different from the first poly carboxylic acid; with (ii) an alcohol component comprising (A) from about 70 to about 100 mol % of a first polyol; and (B) from about 0 to about 30 mol % of an optional second polyol different from the first polyol; and optionally with (iii) one or more glycidyl (meth)acrylate(s), hydroxy functional (meth)acrylate(s) and/or polyisocyanate(s); (b) from about 85% to about 99%, by weight of the mixture, of a copolymer comprising at least one activated unsaturated moiety (such as an acrylic copolymer); and (c) a hardener capable of reacting with the acrylic copolymer and/or the polyester when heated.

Radiation curable powder 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.

Thermosetting Powder Compositions

The invention relates to thermosetting powder compositions which give coatings proving remarkable weatherability, excellent mechanical properties and an outstanding flow containing a binder which comprises a mixture of amorphous polyesters (A) containing from 50 to 100 mol % of isophthalic acid and from 70 to 100 mol % of neopentyl glycol, and (B) which comprises from 75 to 100 mol % of at least one straight-chain saturated di-carboxylic aliphatic acid having from 4 to 14 carbon atoms and from 75 to 100 mol % of at least one branched chain aliphatic diol.

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

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 ...

Semi-gloss powder coating compositions

The present invention relates to powdered thermosetting compositions comprising as binder a co-reactable particulate mixture of a carboxyl group containing amorphous polyester, a glycidyl group containing acrylic copolymer and a curing agent having functional groups, reactable with the polyester’ carboxyl groups. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes which give semi gloss coatings with an adjustable gloss, providing an outstanding flow, excellent mechanical properties, good solvent resistance and weathering.

Polyesters for coatings

The present invention relates to polyesters that can be prepared from renewable resources and/or recycled materials and the production process thereof. In particular, hydroxyl-functional or carboxyl-functional polyesters containing moieties of terephthalic acid and/or isophthalic acid, ethylene glycol, a dianhydrohexitol, and of one or more linear chain dicarboxylic acids are provided. Further, the polyesters have a number average molecular weight, as measured by gel permeation chromatography, of from 400 to 15000 daltons, more preferably from 550 to 15000 daltons. The polyesters of the invention can basically be prepared from recycled polyethylene terephthalate and from renewable polyacids and/or polyols. The present invention further provides a process to produce such polyesters via glycolysis of a polyethylene terepthalate and/or a polyethylene isophthalate with a dianhydrohexitol.

Powder compositions with semicrystalline polyester and amorphous polyester base containing terminal methacryloyl groups

Radiation-curable powder compositions, usable as paint or varnish, which comprise a mixture of at least one semi-crystalline polyester containing end methacryloyl groups and of at least one amorphous polyester containing end methacryloyl groups, comprising the reaction products of a glycidyl methacrylate and of a semi-crystalline or amorphous polyester containing end carboxyl groups.

POWDER COMPOSITIONS

There is described a thermosetting and/or radiation curable powder with a binder prepared from a polyester (PE) obtained from a polyol with lower amounts of neopentyl glycol (NPG). The powder forms smooth defect free coats and is resistant to contamination from conventional NPG-rich PE. The powder comprises a binder of a co-reactable blend of (i) 40-98% by weight (w/w) at least one OH, COOH or ethylenically functional (fn) PE having acid or OH number 10-100 mg KOH/g, T 9 >40° C., where the PE is obtained from reacting a polyacid comprising 70-100% weight of terephthalic acid (TPA) and/or isophthalic acid (IPA) and 0-30% w/w another polyacid; with a polyol comprising 0-85% w/w NPG and 15-100% w/w another polyhydric polyol; (ii) 2-60% w/w at least one glycidyl or isocyanate fn polyphenoxy resin; polyepoxy and/or β-hydroxyalkylamide crosslinker or ethylenically functional oligomer; and (iii) 0.2-5 % w/w of at least one COOH or OH fn acrylic copolymer with a value of 10-100 mg KOH/g; T 9 >400 C and a number average molecular weight (M n ) 1000-15000 and/or at least one glycidyl or isocyanate fn acrylic copolymer having an fn equivalent weight of from 150 to 1000 g of acrylic copolymer per equivalent of fn group, T 9 >40° C. and M n 1000 to 15000 and/or a non functional acrylic copolymer having T g >400 C and M n 1000 to 15000.

Radiation curable powder coating compositions

The invention relates to powder compositions hardenable by radiation usable for preparing paints and varnishes. These powder compositions contain an ethylenically unsaturated resin, a phosphorous containing compound and, eventually, a monomer or oligomer The powder compositions of the invention are especially suited for coating over metal and combine upon melting at low temperatures and curing by radiation a series of properties such as good flow and film flexibility along with an outstanding adhesion to the substrate.

Radiation Curable Low Gloss Powder Coating Compositions

A radiation curable powder coating composition for preparing low gloss coatings, comprises as a binder a mixture of 30 to 90 weight % of one or more (meth)acryloyl group containing amorphous polyester resins having an unsaturated equivalent weight of more than 700 g/double bond and an isophthalic acid content of from 65 to 100 weight %, calculated on all the acids, and 10 to 70 weight % of one or more (meth)acryloyl group containing acrylic copolymers having an unsaturated equivalent weight of up to 1250 g/double bond.

Thermosetting powder compositions for coatings

The present invention relates to an isophthalic acid rich carboxyl functionalised polyester, containing linear chain aliphatic (poly)ether diols, and to thermosetting powder compositions comprising a mixture of the polyester with a β-hydroxylkylamide group containing cross-linking agent. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes for the making of coatings and to coatings obtained therewith.

Thermosetting powder compositions for coatings

The present invention relates to an isophthalic acid rich carboxyl functionalised polyester, containing linear chain aliphatic diols, and to thermosetting powder compositions comprising a mixture of the polyester with a (3-hydroxyalkylamide group containing cross-linking agent. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes for the making of coatings and to coatings obtained therewith.

Radiation curable powder coating compositions

The invention relates to powder compositions hardenable by radiation usable for preparing paints and varnishes. These powder compositions contain an ethylenically unsaturated resin, a phosphorous containing compound and, eventually, a monomer or oligomer. The powder compositions of the invention are especially suited for coating over metal and combine upon melting at low temperatures and curing by radiation a series of properties such as good flow and film flexibility along with an outstanding adhesion to the substrate.

Radiation curable powder coating compositions

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.

Thermosetting powder compositions

The invention relates to thermosetting powder compositions which give coatings proving remarkable weatherability, excellent mechanical properties and an outstanding flow containing a binder which comprises a mixture of amorphous polyesters (A) containing from 50 to 100 mol % of isophthalic acid and from 70 to 100 mol % of neopentyl glycol, and (B) which comprises from 75 to 100 mol % of at least one straight-chain saturated di-carboxylic aliphatic acid having from 4 to 14 carbon atoms and from 75 to 100 mol % of at least one branched chain aliphatic diol.

Polymeric compositions

There is described a radiation curable powder composition which comprisesa) 10 to 90% weight of an ethylenically unsaturated polyester and/or acrylic copolymer having an “in chain” unsaturation from 0.35 to 3.50 milliequivalents of double bonds per gram resinb) 10 to 90% weight of an ethylenically unsaturated (hydrogenated) polyphenoxy resin having a vinyl group, an allyl group, a(meth)acrylate ester group or a diacid or anhydride containing unsaturated groups; andc) 0 to 30% weight of an ethylenically unsaturated oligomer.

Radiation curable low gloss powder coating compositions

A radiation curable powder coating composition for preparing low gloss coatings, comprises as a binder a mixture of 30 to 90 weight % of one or more (meth)acryloyl group containing amorphous polyester resins having an unsaturated equivalent weight of more than 700 g/double bond and an isophthalic acid content of from 65 to 100 weight %, calculated on all the acids, and 10 to 70 weight % of one or more (meth)acryloyl group containing acrylic copolymers having an unsaturated equivalent weight of up to 1250 g/double bond.

LOW TEMPERATURE CURE POWDER COATING COMPOSITIONS

The present invention relates to a powder coating composition for low temperature cure which comprises a mixture of a carboxylic acid group containing first polyester; at least one of a second polyester having a glass transition temperature ≦45° C. and/or a crystalline polycarboxylic acid; a glycidyl group containing acrylic copolymer; a further compound and/or resin having functional groups readable with the carboxylic acid groups; and a thermosetting curing catalyst. These thermosetting powder coatings are designed for coating heat-sensitive substrates such as wood, fibre board and other materials which can not withstand the excessive heat/time conditions necessary to cure traditional coatings. The powder coatings of the invention, when cured at temperatures below 150° C., produce a finish which exhibits a high gloss, smooth surface along with an outstanding hardness and weatherability.

POWDER COMPOSITION

There is described a powder coating composition suitable for food contact use comprising a mix of: (A) a first polyester that is amorphous and COOH functional being obtained from IPA and/or TPA and no more than 10 mole % neopentyl glycol (NPG); (B) a second optional COOH functional polyester obtained from analiphatic diacid and analiphatic diol, and (C) a curing agent that comprises functional groups reactable with the COOH of the polyester(s). The powders are suitable for coating the interior of metal cans especially those holding alcoholic beverages.

Polyester containing tertiary carboxyl groups, preparation method and thermosetting powder compositions containing same

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 β-hydroxylalkylamide. Said compositions provide coatings with excellent surface appearance, good flexibility and good resistance to poor weather conditions.

Radiation Curable Low Gloss Powder Coating Compositions

A radiation curable powder coating composition for preparing low gloss coatings, comprises as a binder a mixture of 30 to 90 weight % of one or more (meth)acryloyl group containing amorphous polyester resins having an unsaturated equivalent weight of more than 700 g/double bond and 10 to 70 weight % of one or more (meth)acryloyl group containing acrylic copolymers having an unsaturated equivalent weight of less than 700 g/double bond.

POLYESTERS FOR COATINGS

The present invention relates to polyesters that can be prepared from renewable resources and/or recycled materials, to their use and their production process. In particular there are provided hydroxyl-functional or carboxyl-functional polyesters comprising moieties of (e) terephthalic acid and/or isophthalic acid, (f) ethylene glycol, (g) a dianhydrohexitol, and of (h) one or more linear chain dicarboxylic acids; wherein the polyester has a number average molecular weight, as measured by gel permeation chromatography, of from 400 to 15000 daltons, more preferably from 550 to 15000 daltons. Polyesters of the invention can basically be prepared from recycled polyethylene terephthalate and from renewable polyacids and/or polyols. The present invention further provides a process to produce such polyesters via glycolysis of a polyethylene terepthalate and/or a polyethylene isophthalate with a dianhydrohexitol. 2. The polyester of comprising claim 1 , based on the total weight of the polyester:(a) from 10% to 80% by weight of moieties of terephthalic acid and/or of isophthalic acid,(b) from 5% to 35% by weight of moieties of ethylene glycol,(c) from 5% to 40% by weight of moieties of dianhydrohexitol,(d) from 5% to 40% by weight of moieties of linear chain dicarboxylic acids, and(e) from 0% to 40% by weight of moieties of one or more other polyols (e1) and/or of one or more other polyacids (e2).3. The polyester of claim 2 , wherein the dianhydrohexitol is isosorbide.4. A (meth)acryloyl-functional polyester prepared from a polyester of .5. A coating composition comprising at least one polyester of .6. An article coated claim 5 , partially or entirely claim 5 , with a coating composition of .8. The process of wherein step (2) comprises a step of chain extension and/or carboxylation of a hydroxyl-functional polyester previously obtained.9. The process of wherein for said chain extension and/or said carboxylation one or more linear chain dicarboxylic acids are used.10. The ...

Powder coating of semicrystalline and amorphous polyesters with crosslinker

Thermosetting powder compositions comprising as binder a mixture of polyesters containing carboxyl groups and of a crosslinking agent having functional groups capable of reacting with the carboxyl groups.The polyesters comprise:(a) a semicrystalline polyester containing carboxyl groups, which comprises, with respect to the total amount of alcohols, of from 85 to 100 mol % of 1,4-cyclohexanediol and of from 0 to 15 mol % of at least one other aliphatic and/or cycloaliphatic polyol and, with respect to the total amount of acids, of from 85 to 100 mol % of a straight-chain saturated dicarboxylic aliphatic acid having from 4 to 14 carbon atoms and of from 0 to 15 mol % of at least one other aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acid; and(b) an amorphous polyester containing carboxyl groups, which comprises, with respect to the total amount of acids, of from 70 to 100 mol % of isophthalic acid and of from 0 to 30 mol % of at least one other aliphatic and/or cycloaliphatic ...

Radiation curable powder 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.

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing semi-crystalline polyester, at least 10 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give low gloss coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Radiation Curable Powder Coating Compositions

The present invention relates to powder compositions curable by ultraviolet irradiation or by accelerated electron beams. These powder compositions comprise at least one ethylenically unsaturated resin, and lend to the production of paint and varnish coatings exhibiting a unique combination of properties, inter alia good flow and mechanical properties and above all outstanding adhesion to metal substrates, persisting on ageing.

Powder coating compositions containing anhydride end-capped crystalline polyesters

Thermosetting coating compositions containing amorphous and semi-crystalline polyesters are provided. They are useful in coating compositions, especially for low temperature powder coating applications. Novel semi-crystalline polyesters useful in the above coating compositions are also provided.

Powder thermosetting compositions for preparing coatings with low gloss finish

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° 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°, according to the ASTM D 523 standard is always less than 50%, that is half-gloss or matt coatings.

POWDER COMPOSITION

There is described a powder coating composition suitable for food contact use comprising a mix of: (A) a first polyester that is amorphous and COOH functional being obtained from IPA and/or TPA and no more than 10 mole % neopentyl glycol (NPG); (B) a second optional COOH functional polyester obtained from analiphatic diacid and analiphatic diol, and (C) a curing agent that comprises functional groups reactable with the COOH of the polyester(s). The powders are suitable for coating the interior of metal cans especially those holding alcoholic beverages. 122-. (canceled)23. A powder coating composition comprising as a binder a mixture of:(A) a first polyester that is amorphous and comprises at least one carboxy group; the first polyester having an acid number from 15 to 100 mg KOH/g, a glass transition temperature (Tg) from 45° C. to 80° C. and a viscosity from 5 to 15000 mPa·s, said first polyester being obtained from: (i) from 50 to 100 mole % of a first acid selected from the group consisting of isophthalic acid, terephthalic acid and mixtures thereof, and', '(ii) optionally from 50 to 0 mole % of a second acid selected from the group consisting of:', 'fumaric acid, maleic acid, phthalic anhydride, 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid, succinic acid, adipic acid, glutaric acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, 1,12-dodecanedioic acid, anhydrides thereof, and any mixtures thereof;, '(a) a dicarboxylic acid component comprising, by mole % of total acid,'} (i) from 70 to 100 mole % of propyleneglycol; and', '(ii) optionally from 0 to 30 mole % of a further diol selected from the group consisting of 1,4-butanediol, 1,6-hexanediol, 1,4-cyclohexanediol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, hydrogenated Bisphenol A, and any mixtures thereof; and, '(b) a polyol component comprising(c) from 1 up to 18 mole % of polyacids comprising at least three carboxy groups;(B) a ...

Fluorinated water-oil repellency agents

The present invention relates to an active energy ray curable compound (A) comprising: at least one active energy ray curable group, at least one fluorine-containing moiety (a1) and at least one moiety (a2) comprising at least one portion represented by Formula (1): —[C(═O)—CH(R)—O—C(═O)—CH(R)—O]n- wherein n is an integer from 1 to 10, and wherein R is selected from —H or —CH 3 . The invention further relates to ways of making such compounds and to their use in providing water-oil repellency properties to a coating composition.

APPARATUS AND METHODS OF POSITIONING AN OBJECT USING AN ADJUSTMENT BLOCK

The present application relates to an apparatus and methods of positioning an object using an adjustment block. The apparatus includes at least one adjustment block, wherein each adjustment block comprises a support structure for mounting an object, a base structure, and a plurality of hinged members arranged between the base and the support structures and configured to pivot relative to the support structure. The apparatus also includes an actuator system configured to actuate the adjustment block to move the object to a predetermined location. The apparatus further includes a locking system configured to maintain a position of the adjustment block. 1. An apparatus for positioning an object , the apparatus comprising: a support structure configured to mount an object,', 'a base structure, and', 'a plurality of compliant hinged members arranged between the base structure and the support structure, wherein each hinged member is configured to pivot relative to the support structure;, 'at least one adjustment block, wherein each adjustment block comprises'}an actuator system configured to actuate the adjustment block to move the object to a predetermined position; anda locking system configured to maintain a position of the adjustment block.2. The apparatus of claim 1 , wherein the support structure is configured to move with six degrees of freedom.3. The apparatus of claim 1 , wherein six hinged members are arranged substantially in parallel between the base structure and the support structure.4. The apparatus of claim 1 , wherein the actuator system comprises:a sensor configured to monitor and measure a position of the object and a position of the adjustment block; anda controller configured to actuate the adjustment block to move the object to a predetermined position.5. The apparatus of claim 4 , wherein the controller further comprises a mechanism to move the hinged members individually and collectively.6. The apparatus of claim 1 , wherein the actuator system ...

Radiation curable powder coating compositions

The present invention relates to powder compositions curable by ultraviolet irradiation or by accelerated electron beams. These powder compositions comprise at least one ethylenically unsaturated resin, and lend to the production of paint and varnish coatings exhibiting a unique combination of properties, inter alia good flow and mechanical properties and above all outstanding adhesion to metal substrates, persisting on ageing.

Powder Compositions

There is described a thermosetting and/or radiation curable powder with a binder prepared from a polyester (PE) obtained from a polyol with lower amounts of neopentyl glycol (NPG). The powder forms smooth defect free coats and is resistant to contamination from conventional NPG-rich PE. The powder comprises a binder of a co-reactable blend of (i) 40 - 96 % by weight (w/w) at least one OH, COOH or ethylenically functional (fn) PE having acid or OH number 10 - 100 mg KOH/g, Tg > 40°C, where the PE is obtained reacting polyacid comprising 70 - 100 % weight of terephthalic acid (TPA) and/or isophthalic acid (IPA) and 0 - 30 % w/w another polyacid; with a polyol comprising 0 - 80 % w/w NPG and 20 - 100 % w/w another polyhydric polyol. (ii) 3 - 60 % w/w at least one glycidyl or isocyanate fn polyphenoxy resin; polyepoxy and/or β-hydroxyalkylamide crosslinker or ethylenically functional oligomer ; and (iii) 0.5 - 5 % w/w of at least one COOH or OH fn acrylic copolymer with a value of 10 - 100 mg KOH/g; Tg > 40°C and a number average molecular weight (M n ) 1000 - 15000 and/or at least one glycidyl or isocyanate fn acrylic copolymer having an fn equivalent weight of from 150 to 1000 g of acrylic copolymer per equivalent of fn group, T g > 40°C and M n 1000 to 15000 and/or a non functional acrylic copolymer having Tg > 40°C and M n 1000 to 15000.

Powder compositions

There is described a thermosetting and/or radiation curable powder with a binder prepared from a polyester (PE) obtained from a polyol with lower amounts of neopentyl glycol (NPG). The powder forms smooth defect free coats and is resistant to contamination from conventional NPG-rich PE. The powder comprises a binder of a co-reactable blend of (i) 40 - 98 % by weight (w/w) at least one OH, COOH or ethylenically functional (fn) PE having acid or OH number 10 - 100 mg KOH/g, T9 > 400C, where the PE is obtained from reacting a polyacid comprising 70 - 100 % weight of terephthalic acid (TPA) and/or isophthalic acid (I PA) and 0 - 30 % w/w another polyacid; with a polyol comprising 0 - 85 % w/w NPG and 15 - 100 % w/w another polyhydric polyol; (ii) 2 - 60 % w/w at least one glycidyl or isocyanate fn polyphenoxy resin; polyepoxy and/or β-hydroxyalkylamide crosslinker or ethylenically functional oligomer; and (iii) 0.2 - 5 % w/w of at least one COOH or OH fn acrylic copolymer with a value of 10 - 100 mg KOH/g; T9 > 400C and a number average molecular weight (Mn) 1000 - 15000 and/or at least one glycidyl or isocyanate fn acrylic copolymer having an fn equivalent weight of from 150 to 1000 g of acrylic copolymer per equivalent of fn group, T9 > 40°C and Mn 1000 to 15000 and/or a non functional acrylic copolymer having Tg > 400C and Mn 1000 to 15000.

Radiation curable powder coating compositions

Powder compositions containing cristalline polyesters with terminal methacrylyl groups

on décrit des compositions en poudre durcissables par rayonnement utilisabl es comme peinture ou vernis qui comprennent au moins un polyester cristallin contenant des groupes méthacrylyle terminaux comprenant les produits de réaction du méthacrylate de glycidyle et d'un polyester cristallin contenant des groupes carboxyle terminaux. Le polyester cristallin contenant des groupes carboxyle terminaux est soit (a) un polyester qui est le produit de réaction de (1) un constituant acide qui contient (a.1.1) 85 à 100 moles % d'acide téréphtalique ou d'acide 1,4- cyclohexanedicarboxylique et (a.1.2) 0 à 15 moles % d'au moins un autre acide di- ou polycarboxylique aliphatique, cycloaliphatique ou aromatique ayant de 4 à 14 atomes de carbone, et (2) un constituant alcoolique qui contient (a.2.1) 85 à 100 moles % d'un diol aliphatique saturé à chaîne droite ayant de 2 à 12 atomes de carbone et (a.2.2) 0 à 15 moles % d'au moins un autre di- ou polyol aliphatique ou cycloaliphatique ayant de 2 à 15 atomes de carbone; soit (b) un polyester qui est le produit de réaction de (1) un constituant acide qui contient (b.1.1) 85 à 100 moles % d'un acide dicarboxylique aliphatique saturé à chaîne droite ayant de 4 à 14 atomes de carbone et (b.1.2) 0 à 15 moles % d'au moins un autre acide di- ou polycarboxylique aliphatique, cycloaliphatique ou aromatique ayant de 4 à 14 atomes de carbone, et, (2) un constituant alcoolique qui contient (b.2.1) 85 à 100 moles % de 1,4-cyclohexanediol, de 1,4- cyclohexanediméthanol ou d'éthylène glycol et (b.2.2) 0 à 15 moles % d'au moins un autre di- ou polyol aliphatique ou cycloaliphatique ayant de 2 à 15 atomes de carbone.

Powdered thermosetting compositions for coatings

Powdered thermosetting compositions including a binder consisting of a mixture of polyesters containing carboxyl groups, and a cross-linking agent with functional groups capable of reacting with the carboxyl groups, are disclosed. The polyesters include (a) a semi-crystalline polyester containing carboxyl groups and consisting of 85-100 mol % of 1,4-cyclohexanediol and 0-15 mol % of at least one other aliphatic and/or cycloaliphatic polyol, based on the total of alcohols, and 85-100 mol % of a straight-chain saturated dicarboxylic aliphatic acid having 4-14 carbon atoms, and 0-15 mol % of at least one other aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acid, based on the total of acids; and (b) an amorphous polyester containing carboxyl groups and consisting of 70-100 mol % of isophthalic acid and 0-30 mol % of at least one other aliphatic and/or cycloaliphatic and/or aromatic polycarboxylic acid, based on the total of acids, and 70-100 mol % of neopentylglycol and/or 2-butyl-2-ethyl-1,3-propanediol, and 0-30 mol % of at least one other aliphatic and/or cycloaliphatic polyol, based on the total of alcohols. Said powdered thermosetting compositions are particularly useful for preparing powdered varnishes and paints, and provide coatings having remarkable weather resistance, high gloss and excellent mechanical properties.

Semi-gloss powder coating compositions

The present invention relates to powdered thermosetting compositions comprising as binder a co-reactable particulate mixture of a carboxyl group containing amorphous polyester, a glycidyl group containing acrylic copolymer and a curing agent having functional groups, reactable with the polyester' carboxyl groups. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes which give semi gloss coatings with an adjustable gloss, providing an outstanding flow, excellent mechanical properties, good solvent resistance and weathering.

Powder compositions containing cristalline polyesters with terminal methacrylyl groups

On décrit des compositions en poudre durcissables par rayonnement utilisables comme peinture ou vernis qui comprennent au moins un polyester cristallin contenant des groupes méthacrylyle terminaux comprenant les produits de réaction du méthacrylate de glycidyle et d'un polyester cristallin contenant des groupes carboxyle terminaux. Le polyester cristallin contenant des groupes carboxyle terminaux est soit (a) un polyester qui est le produit de réaction de (1) un constituant acide qui contient (a.1.1) 85 à 100 moles % d'acide téréphtalique ou d'acide 1,4cyclohexanedicarboxylique et (a.1.2) 0 à 15 moles % d'au moins un autre acide di- ou polycarboxylique aliphatique, cycloaliphatique ou aromatique ayant de 4 à 14 atomes de carbone, et (2) un constituant alcoolique qui contient (a.2.1) 85 à 100 moles % d'un diol aliphatique saturé à chaîne droite ayant de 2 à 12 atomes de carbone et (a.2.2) 0 à 15 moles % d'au moins un autre di- ou polyol aliphatique ou cycloaliphatique ayant de 2 à 15 atomes de carbone; soit (b) un polyester qui est le produit de réaction de (1) un constituant acide qui contient (b.1.1) 85 à 100 moles % d'un acide dicarboxylique aliphatique saturé à chaîne droite ayant de 4 à 14 atomes de carbone et (b.1.2) 0 à 15 moles % d'au moins un autre acide di- ou polycarboxylique aliphatique, cycloaliphatique ou aromatique ayant de 4 à 14 atomes de carbone, et, (2) un constituant alcoolique qui contient (b.2.1) 85 à 100 moles % de 1,4-cyclohexanediol, de 1,4cyclohexanediméthanol ou d'éthylène glycol et (b.2.2) 0 à 15 moles % d'au moins un autre di- ou polyol aliphatique ou cycloaliphatique ayant de 2 à 15 atomes de carbone. Radiation curable powder compositions for use as a paint or varnish are described which comprise at least one crystalline polyester containing terminal methacrylyl groups comprising the reaction products of glycidyl methacrylate and a crystalline polyester containing terminal carboxyl groups. The ...

Powder thermosetting compositions for preparing coatings with low gloss finish

Compositions de revêtement thermodurcissables en poudre comprenant (a) un polyester amorphe contenant des groupes carboxyle, riche en acide isophtalique et en néopentylglycol, éventuellement ramifié par un acide polycarboxylique ou par un polyol contenant au moins 3 groupes fonctionnels; (b) un polyester semicristallin contenant des groupes carboxyle préparé à partir d'un ou plusieurs acides dicarboxyliques aliphatiques saturés à chaîne linéaire, et d'un diol aliphatique saturé à chaîne linéaire ou cyclique éventuellement ramifié par un acide polycarboxylique ou par un polyol contenant au moins 3 groupes fonctionnels, et ayant un point de fusion (Tm) d'au moins 40 ~C et un indice d'acide de 5 à 50 mg de KOH/g, et (c) un agent de réticulation. Ces compositions sont utiles pour la préparation de peintures et vernis en poudre fournissant des revêtements d'excellente qualité dont la brillance, mesurée sous un angle de 60~, selon la norme ASTM D 523 est toujours inférieure à 50 %, c'est-à-dire des revêtements satinés ou mats.

Process for preparing enantiomerically pure imidazo¬4,5,1-jk|¬1,4|benzodiazepin-2(1h)-thiones

Process for preparing enantiomerically pure imidazo[4,5,1-jk][1,4]benzodiazepin-2(1H^_)-thiones of formula (I), starting from 2,6-dihalo-3-nitrobenzyl derivatives (II) and suitably N^_-protected 1,2-diaminopropanes (III). Novel enantiomerically pure intermediates of formulas (III) and (IV) prepared in the course of the present process.

Powder compositions

There is described a thermosetting and/or radiation curable powder with a binder prepared from a polyester (PE) obtained from a polyol with lower amounts of neopentyl glycol (NPG). The powder forms smooth defect free coats and is resistant to contamination from conventional NPG-rich PE. The powder comprises a binder of a co-reactable blend of (i) 40 - 98 % by weight (w/w) at least one OH, COOH or ethylenically functional (fn) PE having acid or OH number 10 - 100 mg KOH/g, T 9 > 40 0 C, where the PE is obtained from reacting a polyacid comprising 70 - 100 % weight of terephthalic acid (TPA) and/or isophthalic acid (I PA) and 0 - 30 % w/w another polyacid; with a polyol comprising 0 - 85 % w/w NPG and 15 - 100 % w/w another polyhydric polyol; (ii) 2 - 60 % w/w at least one glycidyl or isocyanate fn polyphenoxy resin; polyepoxy and/or β-hydroxyalkylamide crosslinker or ethylenically functional oligomer; and (iii) 0.2 - 5 % w/w of at least one COOH or OH fn acrylic copolymer with a value of 10 - 100 mg KOH/g; T 9 > 400C and a number average molecular weight (M n ) 1000 - 15000 and/or at least one glycidyl or isocyanate fn acrylic copolymer having an fn equivalent weight of from 150 to 1000 g of acrylic copolymer per equivalent of fn group, T 9 > 40°C and M n 1000 to 15000 and/or a non functional acrylic copolymer having T g > 400C and M n 1000 to 15000.

Synthesis of cisapride

This invention concerns a new process of preparing cisapride, and the pharmaceutically acceptable acid addition salts thereof, by reductively aminating 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinone in the presence of benzylamine under hydrogen in a reaction-inert solvent, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of about 93/7, which is enriched in the amount of cis-stereoisomer by converting it into its acid addition salt, by treatment with a suitable inorganic acid, in an appropriate solvent, subsequent crystallisation and conversion to its free base form by treatment with an appropriate base, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of equal to or higher than 98/2. Subsequently, cis-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine is reacted with the mixed anhydride of 4-amino-5-chloro-2-methoxy-benzoic acid and ethyl chloroformate in a reaction-inert solvent yielding cisapride.

Radiation curable powder 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.

Powder composition

There is described a powder coating composition suitable for food contact use comprising a mix of: (A) a first polyester that is amorphous and COOH functional being obtained from IPA and/or TPA and no more than 10 mole% neopentyl glycol (NPG); (B) a second optional COOH functional polyester obtained from analiphatic diacid and analiphatic diol, and (C) a curing agent that comprises functional groups reactable with the COOH of the polyester(s). The powders are suitable for coating the interior of metal cans especially those holding alcoholic beverages.

THERMOENDURECIBLE POWDER COMPOSITIONS FOR THE PREPARATION OF WEAK GLOSS COATINGS.

Composiciones de revestimientos termoendurecibles en polvo que comprenden como aglutinante una mezcla de un poliéster amorfo, un poliéster semicristalino y un agente de reticulación, caracterizadas porque el aglutinante comprende (a) un poliéster amorfo que contiene grupos carboxilo, rico en ácido isoftálico, preparado a partir de un constituyente ácido, que comprende de 55% a 100% en moles de ácido isoftálico, de 0% a 45% en moles de al menos un ácido dicarboxílico diferente del ácido isoftálico y de 0% a 10% en moles de un ácido policarboxílico que contiene al menos 3 grupos carboxilo, y de un constituyente alcohólico, que comprende de 60% a 100% en moles de neopentilglicol, de 0% a 40% en moles de al menos un compuesto dihidroxilado diferente del neopentilglicol y de 0% a 10% en moles de un compuesto polihidroxilado que contiene al menos 3 grupos hdroxilo, teniendo dicho poliéster amorfo una temperatura de transición vítrea (Tg) de al menos 50ºC y un índice de ácido de 15 a 100 mg de KOH/g. Compositions of thermosetting powder coatings comprising as a binder a mixture of an amorphous polyester, a semi-crystalline polyester and a crosslinking agent, characterized in that the binder comprises (a) an amorphous polyester containing carboxyl groups, rich in isophthalic acid, prepared from of an acid constituent, comprising 55% to 100 mol% of isophthalic acid, 0% to 45 mol% of at least one dicarboxylic acid other than isophthalic acid and 0% to 10 mol% of a polycarboxylic acid containing at least 3 carboxyl groups, and of an alcoholic constituent, comprising from 60% to 100 mol% of neopentyl glycol, from 0% to 40 mol% of at least one dihydroxy compound other than neopentyl glycol and from 0% to 10 mole% of a polyhydroxy compound containing at least 3 hdroxyl groups, said amorphous polyester having a glass transition temperature (Tg) of at least 50 ° C and an index of acid of 15 to 100 mg KOH / g.

Low temperature cure powder coating compositions

TERMOENDURECIBLE POWDER COMPOSITION FOR COATINGS.

Composición termoendurecible en polvo que incluye un aglutinante que comprende (a) un poliéster amorfo que contiene ácido isoftálico que contiene grupo carboxilo, (b) un poliéster semicristalino que contiene grupo carboxilo, (c) al menos 10 partes en peso, basado en el peso total del aglutinante, de un copolímero acrílico que contiene grupo glicidilo, comprendiendo dicho copolímero al menos 10% en moles de un monómero que contiene grupo glicidilo y con un peso molecular medio numérico (Mn) de al menos 10.000, y (d) un agente de curado con grupos funcionales reactivos con los grupos carboxilo de los poliésteres. Thermosetting powder composition including a binder comprising (a) an amorphous polyester containing isophthalic acid containing carboxyl group, (b) a semi-crystalline polyester containing carboxyl group, (c) at least 10 parts by weight, based on weight total of the binder, of an acrylic copolymer containing glycidyl group, said copolymer comprising at least 10 mol% of a monomer containing glycidyl group and having a number average molecular weight (Mn) of at least 10,000, and (d) an agent curing with functional groups reactive with the carboxyl groups of the polyesters.

Powdery compositions based on semi-crystalline and amorphous polyesters containing methacryloyl end groups

Pulverized preparations based on semi-crystalline polyesters and amorphous polyesters containing terminal methacryloyl groups

Zářenímvytvrditelný práškový prostředek sestává ze směsi nejménějednoho polykiystalického polyesteru a nejméně zjednoho amorfního polyesteru, obsahujících vždy koncové methaktyloylové skupiny, přičemž tyto polyesteryjsou vyrobitelné z glicydylmethakiylátu a polokiystalického nebo amorfního polyesteru, obsahujícího koncové karboxylové skupiny, kteiýje volen ze souboru zahrnujícího: (a) polyester, kletýje reakčním produktem (1) kyselé složky, kteiý obsahuje tereňalovou kyselinu, 1,4-cyklohexandikarboxylovou kyselinu nebo 1,12-dodekandioovou kyselinu a popř. nejménějednu jinou alifatickou, cykloalifatickou nebo aromatickou dikarboxylovou nebo polykarboxylovou C4-I4kyselinu a (2) alkoholové složky, která obsahuje nasycený alifatický diol s přímýmřetězcem se 2 až 12 atomy uhlíku a popř. alespoň jedenjiný alifatický nebo cykloalifaticky diol nebo C,. 15polyol; (b) polyester, kterýje reakčnímproduktem(1) kyselé složky, která obsahuje nasycenou alifatickou diakrboxylovou kyselinu s přímýmřetězcem se 4 až 14 atomy uhlíku a popř. alespoňjednujinou alifatickou, cykloalifatickou nebo The radiation curable powder composition consists of a mixture at least one polycrystalline polyester and at least one amorphous polyester, each of which has a terminal polyester methactyloyl groups, wherein the polyesters are made from glicydyl methacrylate and semi - crystalline or. \ t amorphous polyester containing terminal carboxylic acids groups selected from: (a) polyester, it is ground by the reaction product (1) of the acid component which contains it tartaric acid, 1,4-cyclohexanedicarboxylic acid or 1,12-dodecanedioic acid and optionally least one other aliphatic, cycloaliphatic or aromatic dicarboxylic or polycarboxylic C 4-14 acid and (2) an alcohol component that contains a saturated aliphatic diol with a straight chain of from 2 to 12 carbon atoms and optionally a at least another aliphatic or cycloaliphatic diol or C 1-6 alkyl; 15polyol; (b) polyester, which is the reaction product ...

Thermosetting acryl powder coating

The present invention relates to a composition for thermosetting powder coating having excellent low temperature curability and good storage stability, being capable of giving a coating with good appearance, flexibili ty and solvent resistance. The powder coating composition comprises a blend of two different glycidyl group containing acrylic copolymers and a polycarboxylic acid curing agent.

Powder compositions

Synthesis of an acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

A process of preparing an acid addition salt of delta-aminolevulinic acid comprising: dissolving a lower alkyl 5-bromolevulinate and an alkali metal diformylamide in an organic solvent selected from the group consisting of acetonitrile, methanol, tetrahydrofuran, 2-methyltetrahydrofuran and methylformate or mixtures thereof to form a suspension of an alkyl 5-(N,N-diformylamino) levulinate ester; and hydrolyzing said alkyl 5-(N,N-diformylamino) levulinate with an inorganic acid to form an acid addition salt of delta-amino levulinic acid.

HALF SHINY POWDER COATING COMPOSITIONS

Cycloaliphatic polyesters with carboxyl end groups for the preparation of powder coatings

Powdered thermosetting compositions for coatings comprising a semicrystalline polyester and an amphorous polyester containing carboxyl groups

Powder compositions with semicrystalline polyester and amorphous polyester base containing terminal methacryloyl groups

Compositions en poudre durcissables par rayonnement utilisables comme peintu re ou vernis qui comprennent un mélange d'au moins un polyester semi-cristallin contenant des groupes méthacryloyle terminaux e t d'au moins un polyester amorphe contenant des groupes méthacryloyle terminaux, comprenant les produits de réaction d'un méthacryla te de glycidyle et d'un polyester semi-cristallin ou amorphe contenant des groupes carboxyle terminaux.

Radiation curable low gloss powder coating compositions

Radiation curable powder coating compositions

The present invention relates to powder compositions curable by ultraviolet irradiation or by accelerated electron beams. These powder compositions comprise at least one ethylenically unsaturated resin, and lend to the production of paint and varnish coatings exhibiting a unique combination of properties, inter alia good flow and mechanical properties and above all outstanding adhesion to metal substrates, persisting on ageing.

Thermosetting powder compositions for preparing coatings with slight shine low brilliance

The invention concerns thermosetting powder compositions comprising as binding agent a mixture of a hyperbranched polyol, a polyester containing hydroxyl groups, optionally a semi-crystalline polyester containing hydroxyl groups and a blocked isocyanate as crosslinking agent. Said thermosetting powder compositions produce coatings with low brilliance when they are cured.

Reusable sealing-closure system for a container

SEALING-CLOSURE SYSTEM FOR A CONTAINER HAVING AN OPENING IN THE FORM OF A NECK, COMPRISING A CAP (1) CONNECTED TO A PLUG (8) TO BE INSERTED IN SAID OPENING WHEN THE CAP IS PUT IN PLACE ON THE OPENING, CHARACTERISED IN THAT THE CAP (1) AND PLUG (8) HAVE MEANS (7, 19, 10, 19) PROVIDED WITH CONNECTION MEANS (10, 11) WHICH BY MUTUAL INTERACTION ENSURE A LOOSE, CAPTIVE CONNECTION OF THE CAP (1) WITH THE PLUG (8). THE CAP AND THE PLUG REMAIN LOOSELY HELD TOGETHER WHEN REMOVED FROM THE OPENING AND THE SEALING- CLOSURE SYSTEM: REUSABLE. (FIG. 1)

Composition for powder coatings thermosetting.

Compositions thermodurcissables en poudre comprenant d'une part, un mélange d'un polyester semi-cristallin contenant des groupes carboxyle et d'un copolymère acrylique contenant des groupes carboxyle et, d'autre part, un agent de réticulation ayant des groupes fonctionnels capables de réagir avec les groupes carboxyle, dans lesquelles le mélange comprend: (A) 5 à 45 parties en poids d'un polyester semi-cristallin contenant des groupes carboxyle, constitué, par rapport au total des alcools, de 85 à 100 moles % de 1,4-cyclohexanediol et de 0 à 15 moles % d'au moins un autre polyol aliphatique et/ou cycloaliphatique, et, par rapport au total des acides, de 85 à 100 moles % d'un acide aliphatique dicarboxylique saturé à chaîne linéaire ayant de 4 à 14 atomes de carbone et de 0 à 15 moles % d'au moins un autre acide polycarboxylique aliphatique, et/ou cycloaliphatique et/ou aromatique, et (b) 55 à 95 parties en poids d'un copolymère acrylique ayant un Tg élevé de 45 à 100 degré C et constitué de 1 à 30 % en poids de monomères éthyléniquement insaturés contenant au moins un groupe carboxyle, de 25 à 99 % en poids d'au moins un ester acrylique ou méthacrylique... Thermosetting powder compositions comprising on the one hand, a mixture of a semi-crystalline polyester containing carboxyl groups and of an acrylic copolymer containing carboxyl groups and, on the other hand, a crosslinking agent having functional groups capable of react with the carboxyl groups, in which the mixture comprises: (A) 5 to 45 parts by weight of a semi-crystalline polyester containing carboxyl groups, consisting, relative to the total of alcohols, of 85 to 100 mol% of 1 , 4-cyclohexanediol and from 0 to 15 mole% of at least one other aliphatic and / or cycloaliphatic polyol, and, relative to the total of the acids, from 85 to 100 mole% of a saturated straight chain dicarboxylic aliphatic acid having from 4 to 14 carbon atoms and from 0 to 15 mol% of at least ...

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions includi ng a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing aliphatic semi- crystalline polyester, an optional and different carboxyl group containing semi-crystalline polyester, at least 5 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give semi- matt coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Reusable closure and seal system for a container.

Improved synthetic methods of making fused heterocyclic compounds as orexin receptor modulators

Processes for preparing (((3aR,6aS)-5-(4,6-dimethylpyrimidin-2-yl)hexahydropyrrolo[3,4-c]pyrrol-2(1H)-yl)(2-fluoro-6-(2H-1,2,3-triazol-2-yl)phenyl) methanone are described, which are useful for commercial manufacturing. Said compound is an orexin receptor modulator and may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia and depression.

PROCESS FOR PREPARING ENANTIOMERICALLY PURE IMIDAZO[4,5,1-jk][1,4]-BENZODIAZEPIN-2(1H^_)-THIONES

Process for preparing enantiomerically pure imidazo[4,5,1-jk][1,4]benzodiazepin-2(1H^_)-thiones of formula (I), starting from 2,6-dihalo-3-nitrobenzyl derivatives (II) and suitably N^_-protected 1,2-diaminopropanes (III). Novel enantiomerically pure intermediates of formulas (III) and (IV) prepared in the course of the present process.

Synthesis of cisapride

A new Process of preparing cisapride, and the pharmaceutically acceptable acid addition salts thereof, by reductively aminating 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinone in the presence of benzylamine under hydrogen in a reaction-inert solvent, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of about 93/7, which is enriched in the amount of cis-stereoisomer by converting it into its acid addition salt, by treatment with a suitable inorganic acid, in an appropriate solvent, subsequent crystallisation and conversion to its free base form by treatment with an appropriate base, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of equal to or higher than 98/2.

hiv inhibitors 2-(4-cyanophenylamino)pyrimidine derivatives, pharmaceutical composition comprising them and their preparation processes

derivados de 2-(4-cianofenilamino)pirimidina inibidores de hiv inibidores de replicação de hiv de fórmula (1), sais de adição farmaceuticamente aceitáveis ou formas este reoquim icamente isoméricas destes, em que x é nr4, s, so ou s02; a preparação destes compostos assim como composições farmacêuticas compreendendo estes compostos; o uso destes compostos para a prevenção ou o tratamento de infecção por hiv. 2-(4-cyanophenylamino)pyrimidine derivatives hiv inhibitors hiv replication inhibitors of formula (1), pharmaceutically acceptable addition salts or stereochemically isomeric forms thereof, wherein x is nr4, s, so or s02; the preparation of these compounds as well as pharmaceutical compositions comprising these compounds; the use of these compounds for the prevention or treatment of hiv infection.

POWDERY THERMAL-ACRYLIC COATING

Powdered thermosetting composition for coatings

The present invention relates to powdered thermosetting compositions including a binder which comprises a carboxyl group containing amorphous isophthalic acid containing polyester, a carboxyl group containing semi-crystalline polyester, at least 10 parts by weight, based on the total weight of the binder, of a specific glycidyl group containing acrylic copolymer and a curing agent having functional groups reactive with the polyesters' carboxyl groups. The powdered thermosetting compositions are useful for the preparation of powdered paints and varnishes which give low gloss coatings having an outstanding flow, a remarkable weatherability and excellent mechanical properties.

Radiation curable powder coating compositions

The present invention relates to powder compositions curable by ultraviolet irradiation or by accelerated electron beams. These powder compositions comprise at least one ethylenically unsaturated resin, and lend to the production of paint and varnish coatings exhibiting a unique combination of properties, inter alia good flow and mechanical properties and above all outstanding adhesion to metal substrates, persisting on ageing.

Thermosetting compositions for powder coatings

Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; and hydrolyzing the quatenary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

Powder compositions with semicrystalline polyester and acrylic copolymer base containing ethylenically unsaturate groups

The invention concerns powder compositions hardenable by radiation usable as paint or varnish comprising a mixture of at least a semicrystalline polyester containing terminal methacryloyl groups and of at least an acrylic copolymer containing ethylenically unsaturate groups, these polyesters comprising the reaction products of a glycidyl methacrylate and of a semicrystalline polyester containing terminal carboxyl groups.

Synthesis of cisapride

A new Process of preparing cisapride, and the pharmaceutically acceptable acid addition salts thereof, by reductively aminating 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinone in the presence of benzylamine under hydrogen in a reaction-inert solvent, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of about 93/7, which is enriched in the amount of cis-stereoisomer by converting it into its acid addition salt, by treatment with a suitable inorganic acid, in an appropriate solvent, subsequent crystallisation and conversion to its free base form by treatment with an appropriate base, yielding 1-[3-(4-fluorophenoxy)-propyl]-3-methoxy-4-piperidinamine having a cis/trans ratio of equal to or higher than 98/2.

Thermosetting powder compositions for the preparation of low-gloss coatings

Semi-gloss powder coating compositions

The present invention relates to powdered thermosetting compositions comprising as binder a co-reactable particulate mixture of a carboxyl group containing amorphous polyester, a glycidyl group containing acrylic copolymer and a curing agent having functional groups, reactable with the polyester' carboxyl groups. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes which give semi gloss coatings with an adjustable gloss, providing an outstanding flow, excellent mechanical properties, good solvent resistance and weathering.

Process for preparing enantiomerically pure imidazo[4,5,1-jk]-[1,4]-benzodiazepin-2(1H)-thiones

Process for preparing enantiomerically pure imidazo[4,5,1-jk][1,4]benzodiazepin-2(1 H )-thiones of formula starting from 2,6-dihalo-3-nitrobenzyl derivatives (II) and suitably N -protected 1,2-diaminopropanes (III) Novel enantiomerically pure intermediates of formula (III) and (IV) prepared in the course of the present process.

Improved synthetic methods of making fused heterocyclic compounds as orexin receptor modulators

Processes for preparing (((3aR,6aS)-5-(4,6-dimethylpyrimidin-2-yl)hexahydropyrrolo[3,4-c]pyrrol-2(1H)-yl)(2-fluoro-6-(2H-1,2,3-triazol-2-yl)phenyl)methanone are described, which are useful for commercial manufacturing. Said compound is an orexin receptor modulator and may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia and depression.

Powder thermosetting compositions for preparing coatings with low gloss finish

Compositions de revêtement thermodurcissables en poudre comprenant (a) un polyester amorphe contenant des groupes carboxyle, riche en acide isophtalique et en néopentylglycol, éventuellement ramifié par un acide polycarboxylique ou par un polyol contenant au moins 3 groupes fonctionnels; (b) un polyester semi-cristallin contenant des groupes carboxyle préparé à partir d'un ou plusieurs acides dicarboxyliques aliphatiques saturés à chaîne linéaire, et d'un diol aliphatique saturé à chaîne linéaire ou cyclique éventuellement ramifié par un acide polycarboxylique ou par un polyol contenant au moins 3 groupes fonctionnels, et ayant un point de fusion (Tm) d'au moins 40 °C et un indice d'acide de 5 à 50 mg de KOH/g, et (c) un agent de réticulation. Ces compositions sont utiles pour la préparation de peintures et vernis en poudre fournissant des revêtements d'excellente qualité dont la brillance, mesurée sous un angle de 60°, selon la norme ASTM D 523 est toujours inférieure à 50 %, c'est-à-dire des revêtements satinés ou mats.

Carboxyl group-terminated polyesteramides

Carboxyl group-terminated polyesteramides comprising the reaction products of at least one diamine and a carboxyl group-terminated polyester selected from (a) a polyester prepared from at least one aliphatic and/or cycloaliphatic dicarboxylic acid and at least one polyol: (b) a polyester which is the reaction product of (i) at least one aliphatic and/or cycloaliphatic dicarboxylic acid and/or isophthalic acid, with (ii) a hydroxyl group-terminated polyester, and (c) a polyester which is the reaction product of (i) at least one aliphatic and/or cycloaliphatic dicarboxylic acid, with (ii) a polyester containing both terminal hydroxyl and terminal carboxyl groups, prepared by esterification of (iii) isophthalic acid with (iv) a hydroxyl group-terminated polyester, processes for preparing the same, and the powdered thermosetting compositions based on these polyesteramides and polyepoxy compounds for the production of powdered varnishes and paints which can be applied with a triboelectric spray gun.

RADIATION-CURABLE POWDER COATING COMPOSITIONS

Coatings for ceramic substrates

Fluorinated water-oil repellency agents

The present invention relates to an active energy ray curable compound (A) comprising: at least one active energy ray curable group, at least one fluorine-containing moiety (a1) and at least one moiety (a2) comprising at least one portion represented by Formula (1): -[C(=O)-CH(R)-O-C(=O)-CH(R)-O]n- wherein n is an integer from 1 to 10, and wherein R is selected from -H or -CH 3 . The invention further relates to ways of making such compounds and to their use in providing water-oil repellency properties to a coating composition.

Polymer compositions

There is described a powder composition curable by radiation and thermally, comprising a mixture of (a) from about 1 % to about 15%, by weight of the mixture, of a polyester of Tg ≤ 40°C obtained and/or obtainable by reacting, (i) an acid component comprising (A) from about 70 to about 100 mol % of a first poly carboxylic acid; and (B) from about 0 to about 30 mol % of an optional second poly carboxylic acid different from the first poly carboxylic acid; with (ii) an alcohol component comprising (A) from about 70 to about 100 mol % of a first polyol; and (B) from about 0 to about 30 mol % of an optional second polyol different from the first polyol; and optionally with (iii) one or more glycidyl (meth)acrylate(s), hydroxy functional (meth)acrylate(s) and/or polyisocyanate(s); (b) from about 85% to about 99%, by weight of the mixture, of a copolymer comprising at least one activated unsaturated moiety (such as an acrylic copolymer); and (c) a hardener capable of reacting with the acrylic copolymer and/or the polyester when heated.

Polyesters for coatings

The present invention relates to polyesters that can be prepared from renewable resources and/or recycled materials, to their use and their production process. In particular there are provided hydroxyl-functional or carboxyl-functional polyesters comprising moieties of (e) terephthalic acid and/or isophthalic acid, (f) ethylene glycol, (g) a dianhydrohexitol, and of (h) one or more linear chain dicarboxylic acids; wherein the polyester has a number average molecular weight, as measured by gel permeation chromatography, of from 400 to 15000 daltons, more preferably from 550 to 15000 daltons. Polyesters of the invention can basically be prepared from recycled polyethylene terephthalate and from renewable polyacids and/or polyols. The present invention further provides a process to produce such polyesters via glycolysis of a polyethylene terepthalate and/or a polyethylene isophthalate with a dianhydrohexitol.

Semi-gloss powder coating compositions

The present invention relates to powdered thermosetting compositions comprising as binder a co-reactable particulate mixture of a carboxyl group containing amorphous polyester, a glycidyl group containing acrylic copolymer and a curing agent having functional groups, reactable with the polyester' carboxyl groups. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes which give semi gloss coatings with an adjustable gloss, providing an outstanding flow, excellent mechanical properties, good solvent resistance and weathering.

POWDER COMPOSITION BASED ON SEMI-CRYSTAL POLYESTER AND ACRYLIC COCOLYMER THAT CONTAINS ETHLY UNOFFICIAL CLUSTERS

Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

Powder composition

There is described a powder coating composition suitable for food contact use comprising a mix of: (A) a first polyester that is amorphous and COOH functional being obtained from IPA and/or TPA and no more than 10 mole% neopentyl glycol (NPG); (B) a second optional COOH functional polyester obtained from analiphatic diacid and analiphatic diol, and (C) a curing agent that comprises functional groups reactable with the COOH of the polyester(s). The powders are suitable for coating the interior of metal cans especially those holding alcoholic beverages.

Power compositions based on semi-crystalline polyesters and on amorphous polyesters containing end methacryloyl groups

Thermosetting powder compositions for coatings

The present invention relates to an isophthalic acid rich carboxyl functionalised polyester, containing linear chain aliphatic (poly)ether diols, and to thermosetting powder compositions comprising a mixture of the polyester with a β-hydroxylkylamide group containing cross-linking agent. The invention also relates to the use of said compositions for the preparation of powdered paints and varnishes for the making of coatings and to coatings obtained therewith.

Coatings for ceramic substrates

A process for making highly mechanical and chemical resistant ceramic substrates, especially tiles is provided, wherein the process comprises coating said substrates with a base coat layer of a thermosetting or radiation curable powder coating composition, curing the applied powder coating composition, and applying a further layer of a liquid coating composition and curing the composition by exposure to heat. Coated ceramic substrates, in particular tiles are also provided.

OBTAINING AND SEALING SYSTEM

Pulverzusammensetzungen aus methacrylylendgruppen enthaltenden kristallinenen polyestern

Thermosetting powder coating compositions comprising a co-reactable mixture

Disclosed herein is a thermosetting powder coating composition comprising a co-reactable blend of (i) 5 to 50 weight percent of at least one of glycidyl group containing acrylic copolymer chosen between glycidyl group containing acrylic copolymers (A) having a glass transition temperature in the range of from +45 to +100 DEG C and a number average molecular weight in the range of from 2000 to 5000, glycidyl group containing acrylic copolymers (A') having a glass transition temperature in the range of from -50 to+ 40 DEG C, and their mixtures; (ii) 5 to 90 weight percent of at least one carboxylic acid group containing polyester chosen between carboxylic acid group containing polyesters (B) having an acid number in the range of from 15 to 100 mg KOH/g and a glass transition temperature in the range of from +45 to +100 DEG C, carboxylic acid group containing polyesters (B') having an acid number in the range of from 15 to 100 mg KOH/g and a glass transition temperature of from -50 to +40 DEG C, and their mixtures; (iii) 5 to 50 weight percent of at least one carboxylic acid group containing acrylic copolymer chosen between carboxylic acid group containing acrylic copolymers (C) having a glass transition temperature in the range of from +45 to +100 DEG C, an acid number of from 10 to 90 mg KOH/g and a number average molecular weight in the range of from 2000 to 5000, carboxylic acid group containing acrylic copolymers (C') having a glass transition temperature in the range of from -50 to +40 DEG C, an acid number of from 10 to 90 mg KOH/g, and their mixtures; the weight percentages being calculated on the whole of the components (A), (A'), (B), (B'), (C) and (C'); and (iv) a thermosetting catalyst (D); provided that at least one of the low glass transition temperature polymers (A'), (B') and (C') is present in the composition. These thermosetting powder coatings are particularly designed for coating heat-sensitive substrates and ...

Wärmehärtbare pulverförmige überzugsmittelzusammensetzung

Wärmehärtbare pulverförmige zusammensetzungen auf der basis von polyestern und acrylcopolymeren

Heisshärtbare pulverzusammensetzungen für beschichtungen

Strahlungshärtbare glanzarme pulverlacke

Hiv-inhibierende 2-(4- cyanophenylamino)pyrimidinderivate

Pulverlacke

Verfahren zur herstellung eines zwischenprodukts in der cisapridsynthese

Heisshärtbare pulverzusammensetzungen für lacke

Wärmehärtende pulverzusammensetzungen zur herstellung von überzügen mit schwachem glanz

Halb-glänzende pulverbeschichtungszusammensetzungen

Pulverzusammensetzungen auf basis von teilkristallinen polyestern und acrylpolymeren mit äthylenisch ungesättigten gruppen

Verfahren zur herstellung von enantiomer reinem imidazo (4,5,1-jk) (1,4)-benzodiazepin-2(1h)- thionen