Abstract: The present invention relates to adhesives for increasing the adhesion between rubbers and reinforcing materials based on metals, organic polymers or ceramic materials and the use of adhesives to produce rubber mixtures or rubber vulcanizates containing reinforcing materials.

Abstract: Apparatus for intermingling multifilament yarns, having an intermingling assembly with a thread channel (3; 11), and at least one blowing channel (5′, 5″; 6′, 6″) opening into the thread channel (3; 11), and capable of receiving compressed air, wherein the cross-section of each blowing channel (5′, 5″; 6′, 6″) increases in the direction of the thread channel (3; 11) and the thread channel (3; 11) for each blowing channel (5′, 5″; 6′, 6″) has a first segment (3′) before the opening of the blowing channel (5′, 5″; 6′, 6″), a second segment (3″) in the area of the opening of the blowing channel (5′, 5″; 6′, 6″), and a third segment (3′″) after the opening of the blowing channel (5′, 5″; 6′, 6″), whereby the second segment (3″) of the thread channel has larger cross-sectional areas than those of the first and third segments.

Abstract: The present invention relates to a specific process in which wool is initially subjected to a plasma treatment and then to a wet chemical treatment with a finishing agent, which provides nonfelting wool in a technically simple and easily handleable manner.

Abstract: This invention relates to novel aqueous emulsion polymers obtained by free-radical initiated addition polymerization of at least one monomer in the presence of degraded starch and at least one polymeric emulsifier from the series of sulfo-containing maleic anhydride copolymers and/or sulfo-containing oligourethanes with a branched molecular structure. The invention further relates the use of such emulsion polymers as surface sizing agents for paper and paperlike materials.

Abstract: This invention relates to water-dispersible polyisocyanates obtained by reacting a) at least one bishydroxy-functional compound of the formula (I) HO—R1,—[O—CR2R3—O—R1]n—OH  (I)  wherein R1, R2, R3, and n are defined herein, with b) at least one polyisocyanate of the formula (II) Q[NCO]q  (II)  wherein Q and q are defined herein, and subsequently, in any order, with c) at least one monofunctional polyether alcohol of the formula (III) R4—[O—R5]m—O—H  (III)  wherein R4, R5, and m are defined herein, and optionally with d) at least one compound of the formula (IV) H—O—[R5—O]o—N+R6R7R8 X−  (IV)  wherein R5, R6, R7, R8, O, and X− are defined herein.

Abstract: The invention relates to the antifelt finishing of wool in which the wool is (a) first exposed to a plasma in a corona treatment and (b) subsequently treated with an aqueous dispersion of self-dispersing isocyanates.

Abstract: The present invention relates to water-dispersible polyisocyanates obtained by reacting a) at least one polyisocyanate, b) at least one polyalkylene oxide polyether alcohol optionally containing ester groups, c) at least one quatemized tertiary aminopolyethylene oxide polyether alcohol, and d) optionally, further auxiliaries and additives.

Abstract: This invention relates to compositions comprising a polyisocyanate having ionic groups or polyether groups and at least one member selected from the group consisting of a naturally occurring polymer, a polysiloxane graft copolymer, a water-dilutable synthetic polymer and a cationic polymer or a naturally occurring polymer and at least one member selected from the group consisting of a polysiloxane graft copolymer, a water-dilutable synthetic polymer and a cationic polymer.

Abstract: Cellulose-containing, optionally wood-containing materials which have been obtained using water-dispersible polyisocyanates which in turn have been prepared by reaction of the following starting components:a) modified polyisocyanates of the formula (I) ##STR1## in which: R.sup.1 denotes an aliphatic hydrocarbon radical having 2 to 18 carbon atoms; a cycloaliphatic hydrocarbon radical having 4 to 15 carbon atoms; an aromatic hydrocarbon radical having 6 to 15 carbon atoms or an araliphatic hydrocarbon radical having 8 to 15 carbon atoms,R.sup.2 denotes an aliphatic hydrocarbon radical which has 10 to 35 carbon atoms and optionally contains double bonds,R.sup.3 denotes a hydrocarbon radical which is at least divalent and can also be heterocyclic, with inclusion of the ester oxygen or amide nitrogen from X, ##STR2## where R.dbd.H or C.sub.1 -C.sub.4 -alkyl, or R is a constituent of a cyclic structure,n denotes a number .gtoreq.2 and y denotes a number .gtoreq.

Abstract: The use of water-dispersible polyisocyanates with anionic and/or potentially anionic groups and cationic and/or potentially cationic compounds in paper finishing leads not only to higher retention but also to improved dry and wet strength and sizing.

Abstract: The present invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerizing a portion of the isocyanate groups of an organic polyisocyanate component containinga) one or more diisocyanates corresponding to formula (1) ##STR1## wherein R represents a saturated, straight-chain, aliphatic hydrocarbon group having 8 to 15 carbon atoms and optionallyb) up to 95 NCO equivalent-%, based on the total equivalents a) and b), of one or more organic polyisocyanates other than a),in the presence of trimerization catalysts and terminating the trimerization reaction at any desired degree of trimerization.The invention also relates to the polyisocyanates containing isocyanurate groups obtained by this process and to their use, optionally in excess starting polyisocyanates and optionally blocked with blocking agents for isocyanate groups, as an isocyanate component for preparing polyisocyanate addition products.

Abstract: The present invention relates to mixtures of cycloaliphatic diisocyanates corresponding to formula 1) ##STR1## wherein R represents a saturated, linear, aliphatic hydrocarbon residue having 8 to 15 carbon atoms.The present invention also relates to a process for the preparation of these diisocyanate mixtures and to their use for the production of polyisocyanate addition products.

Abstract: Process for the production of optionally wood-containing cellulose-containing sheet-like structures, such as paper, pasteboard and card, which have been given a dry strength and/or wet strength treatment and have improved whiteness, using water-dispersible isocyanates, wherein the water-dispersible isocyanates:a) are aliphatic, cycloaliphatic, araliphatic or aromatic isocyanates having an NCO functionality of 1.8 to 4.2, mixed with polyether-modified aliphatic, cycloaliphatic, araliphatic or aromatic isocyanates having an average NCO functionality of 0.8 to 3.2,b) the isocyanate mixtures a) contain 1 to 25% by weight of isocyanate groups,c) have a content of ethylene oxide units, arranged in the form of polyether chains of average molecular weight 10 to 3500 (number-average), of 20 to 60% by weight, based on the isocyanate mixture, and if appropriated) have a content of tertiary amino groups and/or ammonium groups of 1 to 500 milliequivalents per 100 g of isocyanate mixture a).

Abstract: The present invention relates to a single-stage process for the preparation of polyisobutylene carboxylic acids from isobutylene-diene copolymers, which are optionally crosslinked or branched by means of a diolefine in the known manner, by reaction with ozone in the presence of a solvent.

Abstract: The present invention relates to the use of organic compounds which contain epoxide groups and which are subjected to a heat treatment at 30.degree. to 150.degree. C. in the presence of an alkylating agent, as auxiliary substances to increase the weather resistance of molded plastic parts. These molded parts are produced by the reaction injection molding technique and the process comprises reacting reaction mixtures based on polyioscyanate addition products.

Abstract: Disclosed herein is an adhesive and a process for bonding with the adhesive containing an isocyanate prepolymer a), an isocyanate reactive component b) and a catalyst for the reaction of a) and b), characterized in that the catalyst comprises a compound corresponding to the following formula ##STR1## wherein R.sup.1 and R.sup.2 may be identical of different and denote an alkyl group having 1 to 4 carbon atoms,R.sup.3 denotes a CHO group or H or alkyl group having 1 to 4 carbon atoms, optionally substituted with a CHO group,n stands for an integer from 2 to 4,o stands for 1 or 2,p stands for 0 or 1 ando+p=2.

Abstract: Liquid crystalline bis-chlorocarbonic acid esters are 4-hydroxybenzoic acid-(4'-hydroxyphenyl) esters corresponding to the following formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 denote, independently of one another, hydrogen, a halogen atom or a C.sub.1 to C.sub.6 alkyl group. Preparation of (I) and liquid crystalline N-alkyl polyurethanes and polycarbonates prepared from (I) are other invention embodiments.

Abstract: Improved two-component polyurethane adhesives contain an isocyanate and a stabilized epoxide and at least one isocyanate-reactive compound.

Abstract: In a construction material comprising a flexible carrier substrate impregnated or coated with a water-hardening resin, the resin contains as an additive polyether polysiloxane polyurethanes of the formula ##STR1## in which R.sup.1 is lower alkyl,m is the average number of siloxane groups in the range from 5 to 25,R is ##STR2## in which X is lower alkylene,Y is an aliphatic, cycloaliphatic, aromatic or araliphatic moiety, which is unsubstituted or substituted by further ##STR3## Z is a polyether moiety based on ethylene oxide units propylene oxide units, or both with the average number of ethylene oxide and propylene oxide units being in the range fro 10 to 100 andR.sup.2 is lower alkyl.

Abstract: Foaming during setting of a polyurethane fixed dressing, e.g. cast for broken arm, is minimized by utilizing as the dressing a polyisocyanate composition comprising:a) at least one organic polyisocyanate,b) at least one catalyst andc) at least one compound of the formula ##STR1## in which R represents methyl, ethyl or propyl and 1.ltoreq.n.ltoreq.4.