摘要:
A thermoplastic composite having a multiplicity of layers and comprising: I) a layer of a polyamide molding composition, II) a layer of a polyester molding composition, and III) a layer of an adhesion promoter adherent to I and II comprising at least 50% by weight of a blend of: a) from 20 to 80% by weight of a polyamide, prepared from &agr;) at least one diamine having from 6 to 12 carbon atoms, and &bgr;) an essentially stoichiometrically equivalent amount of at least one dicarboxylic acid comprising at least 5 mol % of a dicarboxylic acid having from 10 to 36 carbon atoms, and b) from 80 to 20% by weight of a polyester, prepared from &agr;) a mixture of from 30 to 95 mol % of an aromatic dicarboxylic acid having from 6 to 20 carbon atoms and from 70 to 5 mol % of the same dicarboxylic acid as in the polyamide of the adhesion promoter, having from 10 to 36 carbon atoms, and &bgr;) at least one diol having from 2 to 12 carbon atoms.
摘要:
A description is given of moisture-crosslinking hotmelt adhesives for the immediate further processing of the bonded substrates, the adhesives comprising reaction products of difunctional and/or polyfunctional (poly)isocyanates with hydroxyl polyesters formed from polyols and dicarboxylic acids, use being made as dicarboxylic acid of a linear aliphatic dicarboxylic acid having from 13 to 22 methylene groups.
摘要:
A radiation curable powder coating composition, comprising I.) a binder comprising A) 60-90% by weight of at least one amorphous urethane acrylate; and B) 10-40% by weight of at least one crystalline urethane acrylate; wherein a Tg of a mixture of A) and B) is at least 35° C.; and II.) an auxiliary and an additive, excluding an UV initiator, crosslinks to yield a lightfast and weather-stable film.
摘要:
New hydroxyl polyesters fluid at room temperature, with low viscosities at relatively high molecular weight and very low setting points have alkyl side chains in substantially regular arrangement along preferably unbranched or only slightly branched polyester chains, and are formed by the reaction of monocarboxylic acids and/or monoalkanols or their esters of ethers or polyester building components with additional polyester-forming derivatives. The new polyesters can be used to special advantage, after functionalization, for coatings or as adhesives. Especially advantageous is the fact that they can be used without solvents or with a very low solvent content.
摘要:
A radiation-curable powder coating compositions based on crystalline urethane acrylates, which crosslink to light-stable and weather-stable coating films.
摘要:
The invention relates to unsaturated, amorphous polyesters based on certain dicidol isomers and on saturated and/or unsaturated dicarboxylic acids.
摘要:
A UV curable powder coating composition having a binder containing A) 60-90% by weight of at least one amorphous urethane acrylate and B) 10-40% by weight of at least one crystalline urethane acrylate; and having an auxiliary, crosslinks to form a light- and weather-stable paint film that possesses excellent gloss.
摘要:
A solvent-containing coating composition contains at least one hydroxyl-containing saturated copolyester, a phenol-formaldehyde resin, a benzoguanamine-formaldehyde resin and/or a blocked polyisocyanate, a catalyst and at least one solvent, and can further contain aids and additives.
摘要:
A radiation curable powder coating composition that contains a) a binder having at least one amorphous urethane acrylate having a glass transition temperature of at least 35° C. and a melting point of from 50 to 120° C.; and b) an auxiliary, can be crosslinked by radiation to produce a lightfast and weather-stable film.