Abstract: A biologically active compound can be solubilized by reaction in different sequences to form a derivative carrying the active moiety, a linking group such as an optionally substituted diisocyanate radical, a polyether moiety such as a polyoxyethylene radical, and a terminal group such as a butyl radical, e.g. ##STR1## n=1 to 400. The active materials can be agricultural chemicals, pharmaceuticals, and the like.

Abstract: The invention relates to a self-hardening material for supporting bandages which is packaged with exclusion of moisture and consists of an air-permeable, flexible carrier material which is impregnated and/or coated with a compound possessing at least 2 NCO groups. The self-hardening material has a greatly improved shelf life by being stored substantially oxygen-free in an air-tight pack.

Abstract: The instant invention relates to an improved process for the preparation of low molecular weight polyalcohols by the catalytic hydrogenation of a mixture of different low molecular weight hydroxy aldehydes, hydroxy ketones and optionally also polyhydric alcohols such as is formed from the autocondensation of formaldehyde (such a mixture will hereinafter be referred to as "formose"). The invention also relates to the use of these polyalcohols for the production of polyurethane resins.

Abstract: The present invention relates to substantially colorless organic polyisocyanates, optionally in solution in an inert solvent, having a Hazen color index according to DIN 53 409 of at most 60 and a yellow value according to DIN 6167 of at most 3.0, characterized by a content of about 0.01 to 1 ppm (by weight), based on polyisocyanate, of an organic dye soluble in the polyisocyanate and having an absorption maximum of about 560 to 590 nm or a mixture of such dyes.The present invention also relates to two processes for preparing the substantially colorless organic polyisocyanates. In the first process, the organic dye is added to the prepared polyisocyanate while in the second process the organic dye is added to the starting materials used to prepare the polyisocyanate. Finally, the present invention is directed to the production of polyisocyanate polyaddition products from the substantially colorless organic polyisocyanates and isocyanate-reactive compounds.

Abstract: The instant invention relates to an improved process for the preparation of low molecular weight polyalcohols by the catalytic hydrogenation of a mixture of different low molecular weight hydroxy aldehydes, hydroxy ketones and optionally also polyhydric alcohols such as is formed from the autocondensation of formaldehyde (such a mixture will hereinafter be referred to as "formose"). The invention also relates to the use of these polyalcohols for the production of polyurethane resins.

Abstract: The present invention relates to a constructional material which is stable in storage and which is kept under moisture-free conditions and which comprises a substrate and a reactive one-component system which hardens on exposure to air by reaction with moisture. The present invention also relates to a process for the production of a constructional material which is stable in storage.

Abstract: The present invention relates to a process for the production of foams containing urethane groups by reacting polyether polyols with polyisocyanates in the presence of water and in the presence of an alkaline catalyst, a compound containing a labile halogen atom and, optionally, a tertiary nitrogen containing chain extender.The present invention also relates to the foams obtainable by this process.

Abstract: A process for producing an inorganic-organic composition material based on gypsum and polyurethane comprising exposing calcined gypsum or anhydrite to the action of water in the presence of a polyurethane or polyurethane-urea which is dispersible in water and in the presence of up to about 20% by weight (relative to the total mixture) of an alcohol and up to about 20% by weight (relative to the total mixture) of another organic solvent, and allowing the composition to set while permitting any solvents which may be present to evaporate. The calcium sulphate may be on a textile support or the composition may be molded into flexible shaped articles of good mechanical properties.

Abstract: The present invention is directed to a new process for the preparation of mixed trimers by at least partly trimerizing the isocyanate groups of at least two organic isocyanates of a reactivity which differs in the sense of the trimerization reaction, in the presence of trimerization catalysts and optionally interrupting the trimerization reaction at the respectively desired degree of trimerization, in which process the less reactive isocyanate component is introduced, polymerization is then commenced in the presence of the catalyst with the trimerization of at least 0.1% of the isocyanate groups and the more reactive isocyanate component is finally metered into the reaction mixture thus obtained; the mixed trimers obtained according to this process; and the use of the mixed trimers having free isocyanate groups obtained by this process, optionally in a form blocked by blocking agents for organic polyisocyanates, as a starting material for the production of polyurethane plastics materials.

Abstract: The present invention is directed to a process for the production of polyurea-based microcellular moldings comprising reacting(a) at least one diisocyanate or polyisocyanate containing only aromatically bound isocyanate groups,(b) at least one compound containing at least two isocyanate-reactive groups, and(c) optionally the auxiliaries and additives known in polyurethane chemistry, in closed molds, components (a)-(c) being processed as a one-shot system by reaction injection molding, characterized in that component (b) comprises at least one polyether compound (b1) optionally in admixture with other isocyanate-reactive compounds and containing at least 3 aliphatically bonded ether groups and n-aliphatically bonded isocyanate-reactive groups, n standing for an integer or, statistically a fraction of from 2-4(i) at least (100:n) % of the isocyanate-reactive groups present in component (b1) being aliphatically bonded primary and/or secondary amino groups,(ii) at least 10 equivalent % of said amino groups being

Abstract: The present invention relates to a process for the preparation of polyisocyanates containing isocyanurate groups by the trimerization of a proportion of the isocyanate groups of organic polyisocyanates and termination of the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalysts employed are quaternary ammonium salts based on the reaction product of tertiary amines and esters of acids of phosphorus which have an alkylating action. The invention also relates to the use of the polyisocyanates with isocyanurate groups obtainable by this process, optionally in a form freed from excess starting polyisocyanates and/or optionally in a form in which the isocyanate groups are blocked with blocking agents, as isocyanate components for the preparation of isocyanate-polyaddition products, especially polyurethanes.

Abstract: The present invention thus relates to a process for the preparation of polyisocyanates having isocyanurate groups by the trimerization of part of the isocyanate groups of organic polyisocyanates or of mixtures of di- and mono-isocyanates in the presence of basic compounds as trimerization catalysts, with termination of the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalysts used are 1:1-complexes of (i) basic sodium or potassium compounds and (ii) 1,4,7,10,13-pentaoxacylopentadecane or 1,4,7,10,13,16-hexaoxacyclooctadecane.This invention also relates to solutions suitable as catalyst components for this process, comprising 1:1-complexes of (i) basic sodium or potassium compounds and (ii) 1,4,7,10,13-pentaoxacyclopentadecane or 1,4,7,10,13,16-hexaoxacyclooctadecane dissolved in polar lacquer solvents and/or at least one compound within the molecular weight range of about 32 to 250 which has alcoholic hydroxyl groups and is liquid at room temperature.

Abstract: The instant invention is directed to a process for the production of denatured polyaddition products of biomasses and isocyanates, comprising reacting(A) from 5 to 98%, by weight, based on (A)+(B), of a biomass based on microorganisms or derivative and decomposition products thereof with(B) from 95 to 2%, by weight, based on (A)+(B), of a compound containing isocyanate groups, at temperatures of at least 50.degree. C. with complete denaturing of component (A).

Abstract: The present invention is related to compositions containing isocyanatosilanes as additives to increase the stability in storage of liquid or pasty, clear or pigmented compositions containing polyurethane prepolymers with free isocyanate groups and optionally containing solvents.

Abstract: The present invention relates to a constructional material which is stable in storage and which is kept under moisture-free conditions and which comprises a substrate and a reactive one-component system which hardens on exposure to air by reaction with moisture. The present invention also relates to a process for the production of a constructional material which is stable in storage.

Abstract: Aminoplastic resin dispersions which are stable to sedimentation are obtained by condensation of aldehydes with aminoplastic resin formers in an aqueous medium, in the presence of water-soluble compounds of the formulaR--X--(A--O).sub.m --B--NHCONH--Y].sub.nhaving the substituent meanings mentioned in the description. The condensation is preferably carried out in the presence of dyestuffs or optical brighteners which have groups capable of condensation. The dispersions obtained thereby are particularly suitable for whitening the coating compositions used in the paper industry, and for coating paper, wood, films and textile materials.

Abstract: The present invention is concerned with a new class of compounds prepared by reacting cyclic aminals of the formula ##STR1## with polyisocyanates of the formula R.sub.5 (NCO).sub.m+n to yield ##STR2## and with this process for obtaining said compounds, as well as the use of such compounds in polyurethane chemistry. If such compounds are free of isocyanates (n=0) they are useful as latent cross-linkers or hardeners activatable by heat or moisture. If such compounds carry free isocyanate groups (n=1 or 2) there are useful as synthetic resin precursors. In the above formulaem represents an integer of from 1 to 3, andn represents 0, 1 or 2, and the sum of m+n is 2 or 3,R.sub.1 represents an aliphatic hydrocarbon group which is optionally cyano-substituted and which has from 1 to 6 carbon atoms, a cycloaliphatic hydrocarbon group having from 5-10 carbon atoms or an araliphatic hydrocarbon group having from 7-10 carbon atoms;R.sub.

Abstract: The present invention relates to a process for the preparation of polyurethane foams capable of being flame laminated and high frequency welded, comprising reacting:(a) polyisocyanate,(b) a compound having a molecular weight of from 400 to 10,000 containing at least two isocyanate-reactive hydrogen atoms and(c) a dialkoxy-phosphonyl-N-alkyl-formic acid amide of the formula: ##STR1## wherein m represents an integer of from 1 to 3,n represents an integer of from 0 to 8,X represents halogen, hydrogen, C.sub.1 to C.sub.6 alkyl, -OR, or ##STR2## R represents C.sub.1 to C.sub.6 alkyl, R.sub.1 represents hydrogen, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 alkylene, C.sub.6 to C.sub.10 aryl or C.sub.6 to C.sub.10 arylene, andR.sub.2 and R.sub.3, which may be the same or different, represent C.sub.1 to C.sub.10 alkyl in the presence of water and/or blowing agent.The present invention also relates to dialkoxy-phosphonyl-N-formic acid amides.

Abstract: A process for preparing a mixture of polyhydroxyl compounds having low molecular weight by catalytically hydrogenating a formose mixture with hydrogen on a metal catalyst. The hydrogenation is carried out at a pH of 7.5 to 12.5 and at elevated temperature and pressure. The formose mixture comprises (i) up to 70 wt. % formose, (ii) up to 1.6 wt. % lead ions and (iii) up to 5 wt. % calcium ions with at least one of (ii) or (iii) being present. The catalyst which is present in an amount of 4-240 wt. % (based on formose solution) is a compound taken from the group consisting of nickel, cobalt and compounds thereof. The mixture of polyhydroxyl compounds made in accordance with the present invention is useful as a starting material in the production of polyether polyols, polyester polyols and polyurethane plastics.

Abstract: A process for the preparation of homogeneous and cellular polyurethane plastics by the reaction of(a) organic polyisocyanates;(b) compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having molecular weights of from 400 to 10,000;(c) chain extenders, and, optionally, additional(d) short-chained compounds containing at least 2 Zerewitinoff-active hydrogen atoms and having a molar mass of from 32 to 400, as well as, optionally,(e) catalysts, blowing agents and other known additives,is described, which is characterized in that 1,4-3,6-dianhydro-hexites, preferably 1,4-3,6-dianhydro-D-sorbitol and/or 1,4-3,6-dianhydro-D-mannitol, optionally mixed with lower molecular weight compounds, preferably with polyols having a molecular weight of from 62 to 400, particularly preferably butane diol-1,4 are used as the chain extenders. The new chain extenders produce high quality elastomers and foams.