Abstract: Interpenetrating polymer networks prepared from 60 to 99.9% by weight, of a thermoplast and 0.1 to 40% by weight of a thermosetting resin which comprises:(a) at least one polycyanate and(b) from 1 to 40% by weight, based on (a), of at least one polyester having a hydroxyl number of from 28 to 320, a number average molecular weight M.sub.n of from 700 to 8000 and containing from 50 to 92%, by weight, of alcohol residues, acid residues, or both with each of said residues containing cycloaliphatic moieties.

Abstract: Polyurethane-based matrix materials are made by reacting a phenol which is at least bifunctional with an aromatic isocyanate which is at least difunctional in the presence of 1-40 wt. % soft segment former. The soft segment former is a compound containing long chain aliphatic groups having at least six carbon atoms in the aliphatic group, an isocyanate-reactive group and a molecular weight of from 800 to 10,000. From 90 to 130 equivalent percent of isocyanate groups (based on the total of isocyanate-reactive groups present in the phenol and soft segment former) are employed. These matrix materials are particularly useful in the production of composite materials and as adhesives.

Abstract: This invention relates to a thermosetting resin of either (a) at least one polycyanate and (b) at least one polyester polyol or of (c) a prepolymer of (a) and (b) and to the use thereof for the production of composite materials and of interpenetrating polymer networks (IPNs).

Abstract: Molded body of vulcanized rubber having firmly adhering varnish layer produced by applying a coating of varnish which has a compound with a member which will on subsequent vulcanization participate in the vulcanization reaction, to the surface of the unvulcanized molded body. Subsequently vulcanizing the coated molded body to cause the member to participate in the vulcanization and produce a vulcanized rubber molded body with a firmly adhering varnish layer.

Abstract: The instant invention is directed to novel compounds and the use thereof in producing polyurethane resins. The compounds generally correspond to the following formula: ##STR1## wherein n is an integer of from 1 to 5,R is a C.sub.1 -C.sub.5 alkyl groupY is a C.sub.1 -C.sub.5 alkyl group or a ##STR2## and Z is a ##STR3## where n=0 or 1, X is --O-- or ##STR4## and R' is an aliphatic group having from 1 to 15 carbon atoms and may contain ester, ether, or amide groups or tertiary nitrogen and, when m=0, R' may be a hydrogen atom.

Abstract: Novel, finely divided, redispersible dispersions of high melting polyesters in low melting polyhydroxyl compounds are disclosed. Disclosed also is a process for their preparation and their use as polyol components containing fillers in the production of cellular or non-cellular polyurethanes.

Abstract: A release agent applied to the surface of a mold in the form of a film to permit ready removal of plastic, particularly polyurethane, from the mold. The release agent contains a film-forming substance having an affinity to the plastic and becomes attached to the plastic and is removed with the plastic when taken out of the mold thereby preventing buildup of film-forming substance in the mold. A cross-linking agent and/or a cross-linking catalyst and/or emulsifier and/or tenside may advantageously be incorporated in the release agent.

Abstract: The instant invention is directed to hexahydrotriazine carboxylates, a method for their preparation, and their use as catalysts in the production of polyisocyanurate plastics.

Abstract: Polyurethane elastomeric foam by foaming a prepolymer or polyisocyanates and compounds having at least two hydrogen atoms reactive to isocyanates, and a chain-lengthening polyamine agent, in the presence of an expanding agent containing a component reactive with the polyamine chain-lengthening agent or with the products of reaction thereof with polyisocyanates, and split-off gas.

Abstract: The invention relates to compositions containing both amino groups and hydroxyl and/or mercapto groups. The products are obtained by reacting relatively high molecular weight polyols and/or polythiols with less than equivalent quantities of isatoic acid anhydride.

Abstract: The instant invention is directed to hexahydrotriazine carboxylates, a method for their preparation, and their use as catalysts in the production of polyisocyanurate plastics.

Abstract: A process is disclosed for producing polyurethane resins using novel catalysts selected from the group consisting of a process for the production of cellular or non-cellular polyurethane resins comprising reacting:(a) polyisocyanates; with(b) compounds having at least 2 isocyanate reactive hydrogen atoms; in the presence of(c) tertiary amines as catalysts; optionally with the addition of(d) blowing agents, stabilizers and other known additives; characterized in that the substances used as component (c) comprise compounds selected from the group consisting of ##STR1## and mixtures thereof in which formulae: the symbols R may be the same or different and represent straight or branched-chain alkyl groups having from 1 to 4 carbon atoms;the symbols n may be the same or different and represent 2 or 3;the symbols m may be the same or different and represent 2 or 3; andk represents an integer of from 1 to 5.

Abstract: This invention relates to new high molecular weight polyurethanes which contain a very small amount of urethane and urea groups. These new synthetic resins are built up as block copolymers and contain relatively high molecular weight segments which are derived from high melting and low melting polyols and linked together through ester and/or urethane and/or urea groups.

Abstract: This invention relates to new high molecular weight polyurethanes which contain a very small amount of urethane and urea groups. These new synthetic resins are built up as block copolymers and contain relatively high molecular weight segments which are derived from high melting and low melting polyols and linked together through ester and/or urethane and/or urea groups.

Abstract: The invention relates to compositions containing both amino groups and hydroxyl and/or mercapto groups. The products are obtained by reacting relatively high molecular weight polyols and/or polythiols with less than equivalent quantities of isatoic acid anhydride.

Abstract: Novel polyurethane elastomers having excellent physical properties are prepared utilizing as chain extenders aromatic diamine compounds having the general formula ##STR1## wherein R is hydrogen, C.sub.1 to C.sub.4 alkyl, halogen, C.tbd.N, CF.sub.3 or SO.sub.2 --Z wherein Z is C.sub.1 to C.sub.4 alkyl, several of which diamine compounds are hitherto unknown in the art.

Abstract: This invention relates to a process for the production of polyurethane resins (more particularly foam resins) in which linear polyamines containing at least four tertiary nitrogen atoms are used as catalysts. The compounds correspond to the general formula: ##STR1## wherein the groups R, which may be the same or different, represent methyl or ethyl groups; m represents an integer of from 2 to 7; and the integers n, which may be the same or different, represent 2 or 3.

Abstract: The instant invention relates to compositions containing both amino groups and hydroxyl and/or mercapto groups. The products are obtained by reacting relatively high molecular weight polyols and/or polythiols with less than equivalent quantities of isatoic acid anhydride in two reaction stages.

Abstract: The instant invention relates to an improved process for the production of cellular or non-cellular polyurethane urea elastomers, in which diamines which contain ester groups are used as chain lengthening agents. A characteristic feature of the process according to the invention is the use of salts of aromatic diaminocarboxylic or sulphonic acids as a portion of the chain lengthening component. Elastomers produced by this process are distinguished by their improved mechanical properties, in particular their increased tensile strength and tear propagation resistance as well as their reduced permanent elongation.

Abstract: This invention relates to novel flame retarding agents and processes in which they are used in the production of polyurethanes. These compounds are represented by the general formula: ##STR1## wherein: A and L, which are identical or different, represent optionally branched C.sub.1 -C.sub.17 -alkyl groups or -OR groups wherein R represents an optionally branched C.sub.1 -C.sub.8 -alkyl group, andX represents hydrogen, halogen, an optionally branched C.sub.1 -C.sub.8 alkyl group, a C.sub.6 -C.sub.12 aryl or aralkyl group, NH.sub.2, CF.sub.3, CN, COOR', SO.sub.3 R', ##STR2## wherein: R' represents hydrogen or an optionally branched alkyl or cycloalkyl group having 1-10 C atoms andR" represents an optionally branched alkyl or cycloalkyl group having 1-10 C atoms.