Dynamit Nobel Aktiengesellschaft

Huels Troisdorf Ag

Hans Huber

Norbert Vollkommer

Hartmut Muller

Gerhard Geier

Giselher Franzmann

Claus Dietrich Seiler

Bernd Elmenthaler

Edward Hansel

Hartmut M/u/ Ller

Eduard Hansel

Radiation-setting (meth)acrylate-functional polyesters prepared from base polyesters which are fluid at room temperature and have molecular weights of 1,000 or more as well as aliphatic side chains bound to the main chain by ester bridges and, in some cases, ether bridges, and in which a maximum of 90% of the original hydroxyl groups of the base polyester are functionalized, are usable for coatings and especially as adhesives free of solvents.

Radiation-curable macromers based on (meth)acrylate-functional

Pressure-sensitive adhesives composed of radiation-cured (meth)acrylic-functional polyesters are prepared from base polyesters, fluid at room temperature, which have molecular weights of 1,000 to 10,000 and branched main chain, and/or from new polyesters having aliphatic side chains bound by ester bridges or, in some cases, ether bridges to the main chain, followed by functionalization of a maximum of 90% of the original hydroxyl groups of the base polyesters by reaction with (meth)acrylate compounds, and crosslinked by electron beam or ultraviolet radiation in a thin coating on a support. The new pressure-sensitive adhesives have the property and the advantage of being cross-linkable by radiation without the use of solvents or diluents.

Pressure-sensitive adhesives based on radiation-curable polyesters

Disclosed is a thermosetting adhesive and sealant composition of:

Thermosetting adhesive and sealant compositions

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.

Polyesters containing side chains and the use thereof

New alkenylacyloxysilanes in which the acyloxy grouping is derived from benzoic acid and a method for making the new compounds are disclosed. The present invention also relates to the use of these new alkenylacyloxysilanes in making pressure-sensitive adhesives which are prepared by copolymerizing these new compounds with at least two other ethylenically unsaturated compounds. The crosslinking of these new pressure-sensitive adhesives is performed preferably with the aid of known crosslinking catalysts and/or by high-energy radiation.

Alkenylbenzoyloxysilanes and their use in pressure-sensitive adhesives

Thermosetting adhesive and sealing compositions are described, consisting of:

Thermosetting adhesive and sealing compounds

The present invention relates to resin mixtures which are fluid at temperatures up to 100.degree. C. and which crosslink either at elevated temperature or under the influence of moisture. Thermal crosslinking takes place at temperatures of 100.degree. C. and up, preferably at about 120.degree. C. The mixtures contain one or more mutually compatible polymers containing hydroxyl groups, in which at least 5% and not more than 90% of the hydroxyl groups are replaced by alkoxysilyl groups. The introduction of the alkoxysilyl groups is accomplished by the reaction of a diisocyanate with a hydroxyl group on the polymer, on the one hand, and with an aminosilane or mercaptosilane ester on the other. On the basis of their fluid-to-viscous consistency at room temperature or moderately elevated temperature, the resins can be applied in a thin coating and easily crosslinked in situ.

Growing community of inventors

Lohmar, Germany

Hans Huber