Dynamit Nobel Aktiengesellschaft

Gerhard Schade

Norbert Vollkommer

Gerhard Bier

Peter Uckert

Robert Kuhnrich

Egon N Petersen

Werner Schmidt

Herbert Klinkenberg

Helmut Aus Der Funten

Helmut Wulff

Bernd Elmenthaler

Franz Blaschke

Norbert Volkommer

Gunter Tews

Martin Schmitthenner

Hans Melin

Manfred Fritz

Helmut Wemheuer

A method for the preparation of mixed polyesters with the use of titanium catalysts, wherein addition products prepared from phosphorous acid and monoepoxides are utilized, especially in the esterification stage and the subsequent polycondensation stage of the process. The resulting polyester is free from discoloration.

Method for the preparation of light-colored polyesters with the use of

Thermosetting coating substances containing as binding agent 5 to 35 weight-percent of triazine resins, especially benzoguanamine resins, or blocked polyisocyanate resins, and 95 to 65 weight-parts of saturated polyesters of terephthalic and/or isophthalic acids and 100 to 70 mole-% of bis-(hydroxymethyl)-tricyclodecane and 0 to 30 mole-% of additional diols, especially 2,2-dimethylpropanediol-1,3, yield varnish coatings on metals, which coatings are stable under sterilization conditions against acid contents in containers, especially acid foodstuff preparations.

Polyester varnishes

A polyether ester having a melting point of 95.degree. to 125.degree. C. based on 1,4-butanediol, terephthalic acid and isophthalic acid in a molar ratio of 48 to 55:52 to 45 and a content of 10.5 to 25 wt % of polyethylene glycol with a molar mass of 0.4 to 6 kg/mol is presented as a suitable fusion adhesive for textiles. The bonds prove to be resistant to hot water and perchloroethylene.

Polyether esters for the cementing of textiles

A method of preparing a dispersion of a crystalline linear saturated polyester of high molecular weight which comprises contacting said polyester with a high boiling organic liquid whose boiling point is at or above the melting point of the polyester, the weight ratio of polyester to high boiling organic liquid being between 40:60 and 60:40 and heating the resultant mixture at elevated temperature until a homogeneous mass forms, cooling the resultant mass with stirring too such an extent that the melt material is still able to flow or be stirred and then allowing the material to further cool and stiffen without further stirring; or before or during further cooling diluting the mixture while it is still capable of flowing or being stirred, with an additional amount of a high boiling organic liquid or a liquid miscible therewith and thereafter further cooling the resultant mixture.

Method of preparing dispersions of crystallizable polyesters of high

A process for preparing a poly-(alkylpentamethyleneterephthalamide) which comprises heating an aqueous solution of the corresponding nylon salt and still water soluble low molecular weight oligomer, the mixture of nylon salt and oligomer having 20 to 50 mole percent carbonamide groups and 50 to 80 mole percent salt groups, from a temperature at least as low as 150.degree. C. at atmospheric pressure up to a polycondensation temperature of at least 250.degree. C.

Method of preparing modified or unmodified

A powder lacquer composition comprising a hydroxyl group containing polyester resin which is solid at room temperature and, as a crosslinking agent, a titanium chelate which is solid at room temperature.

Crosslinking powder lacquers of polyesters

A polymeric formal having the general formula ##STR1## wherein p is 0 or 1, n is a positive integer from 2 to 200 and R represents optionally halogen-substituted straight-chained or branched-chained alkyl radicals having 3 to 8 carbon atoms, an aryl radical or an aralkyl radical which can be substituted on one or both sides with alkyl or hydroxyalkyl ether groups; improved methods for the preparation of such formals, tetrabromoxylylene-bis-(.beta.-hydroxyethylether) compounds employed in the preparation of such formals and the use of such polymeric and oligomeric formals as flame retardant agents in plastic compositions especially thermoplastic and polycondensation plastic compositions.

Polymeric and oligomeric formals

A polyamide composition, useful in the preparation of transparent sheets, having improved resistivity toward solvents containing moieties of terephthalic acid and 2-methylpentamethylenediamine, said polyamide characterized by a content of moieties of 2-ethyltetramethyldiamine and/or of isophthalic acid in a concentration totalling 15 to 30 mole percent, with respect to the sum of all diamine moieties or all dicarboxylic acid moieties, as the case may be.

Transparent polyamides

A water-dispersible polycondensation polyester resin having moieties of at least one polycarboxylic acid and at least one polyvalent alcohol having a terminal hydroxyl group, said polyester having a molecular weight between 300 and 3,000, a softening point between 30.degree. and 60.degree. C, said polyester additionally containing an amount of 1 to 5 mole percent based upon the moieties of polycarboxylic acid or polyvalent alcohol; moieties of an alkali metal-sulfo group containing polycarboxylic acid or polyvalent alcohol; aqueous dispersions of such water-dispersible polyester resin and the use of such water dispersions as baked upon lacquer compositions.

Water-dispersible ester resin containing a moiety of polyacid or

A process for producing a linear polyester which comprises:

Process for the production of polyesters of 1,4-butanediol

A process for the manufacture of wire insulation varnish resins suitable for application from the melted state which comprises:

Process for the manufacture of wire insulation varnish resins suitable

A stabilized polyamide composition comprising a random polyester amide containing the following moieties: ##EQU1## where A is an aliphatic, cycloaliphatic or aromatic residue or mixtures therof, B is an aliphatic or cycloaliphatic residue or mixtures thereof, and Y is an aliphatic or cycloaliphatic residue, the moieties I being present in an amount of 20 to 80 mole percent, the structural moieties II, III or mixtures thereof being present in an amount of 80 to 20 mole percent, and:

Growing community of inventors

Witten, Germany

Gerhard Schade