Abstract: This invention relates to a process for the production of polyureas by reacting organic polyisocyanates with diamines, optionally in the presence of other polyfunctional compounds, i.e. polyfunctional in the isocyanate polyaddition context, having isocyanate-reactive hydrogen atoms, which is distinguished by the fact that the polyisocyanates used have an NCO-content of about 0.5 to 25%, by weight, and which, in addition, have an acylated urea group ##STR1## content of about 0.5 to 50% by weight and, optionally, a carbodiimide group (-N=C=N-) content of about 0 to 25% by weight.The invention also relates to the use of the polyureas obtained by this process for the production of coatings, lacquer finishes and impregnations.

Abstract: The present invention relates to a process for preparing elastic laminates by admixing elastomeric granules with a moisture hardenable polyurethane binder and hardening the binder. The binder is formulated to have a workable viscosity at room temperature and to avoid crystallization at temperatures above about 0.degree. C. The binder is the reaction product of polyisocyanates of the diphenyl methane series having at least 20 wt. % of 2,4'-diisocyanatodiphenyl methane and di- and/or trihydroxy polyethers.The invention also relates to the binder composition itself and a process for preparing it. The binder has a viscosity of about 1000 to 15,000 cP at 20.degree. C and an NCO content of about 5 to 15 wt. %. It is prepared at an NCO to OH ratio of about 2:1 to 15:1 and at about 15.degree. to 100.degree. C.

Abstract: Non-porous, thin, polycarbonate films and a process for their production. Solutions of polycarbonates in concentrations of less than 5 parts solids per 100 parts solvent are applied to the surface of liquids immiscible, or sparingly miscible with, the solvent for the polycarbonate. The solvent is then evaporated, and the resultant film removed. The films are useful for the separation of gas and liquid mixtures and for electrical insulating purposes.

Abstract: Mineral filled poly(butyleneterephthalate)s are comprised of a poly(butyleneterephthalate) resin and 10 to 50 percent by weight of a novaculite mineral filler having an average particle size of less than 5 microns. Articles molded from the novaculite filled poly(butyleneterephthalate) exhibit improved impact properties over typical fillers for poly(butyleneterephthalate) resins. Impact properties can be further improved by the addition of a silane coupling agent to the poly(butyleneterephthalate) novaculite blend.

Abstract: Polycarbonate articles are provided with enhanced flame retardant characteristics by the addition of ferrocene and derivatives thereof to polycarbonate resins.

Abstract: The present invention is related to high molecular weight polycarbonates based on aromatic dihydroxy compounds which contain 5 to 100 mol % preferably 20 to 100 mol % of structural units derived from .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexakisaryl-1,3-and/or -1,4-dimethyl benzene dihydroxy compounds. In a preferred embodiment, the polycarbonate is a copolymer of the hexakisaryl dihydroxy compounds and bisphenols known to be useful in producing polycarbonates. The residues of the hexakisaryl compound may be 5 to 90 mol %, preferably 20 to 70 mol % of the structural units. An especially preferred copolymer is that between the hexakisaryl compounds and .alpha.,.alpha.'-(hydroxyphenyl)-diisopropyl benzenes. These polycarbonates show improved heat stability and higher second order transition temperature points than conventional polycarbonates and are useful in applications involving high service temperatures such as electrical insulating film.

Abstract: The present invention is concerned with molding compositions which contain an aromatic polycarbonate and from about 0.001 to 1% by weight of a mold release agent selected from the group consisting of perfluoroalkanesulphonic acid amides and cyclimmonium salts of perfluoroalkanesulphonic acids.

Abstract: This invention relates to compounds corresponding to the following general formula: ##STR1## wherein M REPRESENTS AN INTEGER OF FROM 1 TO 6;N represents an integer of from 0 to 4;R.sub.1 represents an aliphatic hydrocarbon group containing from 2 to 6 carbon atoms;R.sub.2 and R.sub.3 which may be the same or different, each represents hydrogen, an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, a cycloaliphatic hydrocarbon group containing from 5 to 7 carbon atoms, or an aromatic hydrocarbon group containing from 6 to 10 carbon atoms, or when taken together with the ring carbon atom they may form a 5- or 6-membered cycloaliphatic hydrocarbon ring;R.sub.4 represents an aliphatic hydrocarbon group containing from 2 to 6 carbon atoms; andR.sub.5 represents a residue of the type which may be obtained by removing the isocyanate groups from an organic (n + m)-valent polyisocyanate.

Abstract: The amount of unreacted 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl-cyclohexane (IPDI) mixed with an adduct of IPDI and a polyhydroxyl compound having two or three hydroxyl groups in a solution thereof in a conventional lacquer solvent is reduced by mixing the solution with from 0.1 to 10 mols monohydric alcohol per mol of unreacted IPDI in the solution to provide a polyisocyanate solution adapted for use in making coating materials such as lacquers.

Abstract: Thermoplastic moulding compositions of1. 70 - 20 % by weight of graft polycarbonates whose graft stock is a vinyl polymer with a molecular weight of from 10,000 to 100,000, containing from 3 to 10 side chains attached by carbon, each of which contains a hydroxyphenyl group, on which aromatic polycarbonate chains are condensed, and2. 30 - 80 % by weight of graft polymer rubbers obtained by polymerizing a mixture of2.1. 50 - 90 % by weight styrene, .alpha.-methylstyrene, methylmethacrylate or mixtures thereof, and2.2. 10 - 50 % by weight acrylonitrile, methacrylonitrile, methylmethacrylate or mixtures thereof on a diene or acrylate rubber.

Abstract: A process is provided for making a polyurethane mechanical foam adapted to be used as an interlayer between a plastic surface layer and a textile, the process involving frothing a non-ionic aqueous dispersion free from emulsifying agents of a polyurethane having a particle size of less than 1 micron, said dispersion containing more than 45% by weight polyurethane and a thickening agent whereby its viscosity of the dispersion is from about 10 to about 70 seconds with a Ford Cup having a 4 mm orifice to form a foamable mixture, spreading the frothed dispersion into a foamed film, and drying the resulting product.

Abstract: This invention discloses a composite material consisting of layers of a plastic sheet, a polyurethane ionomer latex foam and a textile material.

Abstract: Stable solutions of diisocyanate polyaddition products in a solvent mixture containing: a) inert organic solvents, b) primary and/or secondary alcohols and c) semiacetals of formaldehyde and the process of preparing such solutions. Methods of dressing leather with said solutions are also disclosed.

Abstract: A non-woven fabric adapted for use in footwear is impregnated with a polymer prepared by polymerizing acrylic acid or methacrylic acid, mixtures thereof, or mixtures with other vinyl monomers in the presence of polyethylene oxide to improve its water absorption characteristics.

Abstract: Polyurethane coated textile sheets are disclosed and a reversal process for their preparation, wherein the textile sheets are coated by means of a top coat solution with a polymer mixture comprisingI. 50 to 90% by weight, based on the total polymer, of a substantially linear polyurethane which is substantially free of reactive end groups and which has been prepared by a process which comprises reacting an organic dihyroxyl compound of molecular weight 500 to 4000 and an organic diol of molecular weight 60 to 450 with an aromatic diisocyanate,Ii. 0 to 50% by weight of a vinyl copolymer, andIii. 1 to 50% by weight of a diene graft copolymer,Said polymer mixture having been applied to a release substrate prior to said coating process.

Abstract: An aqueous solution of bisulphite blocked polyisocyanate prepolymers is imparted improved storage stability at temperatures up to about 45.degree. C by incorporation of about 0.5 to 20% by weight (based on the weight of bisulphite blocked prepolymer) of an aromatic or alkyl aromatic sulphonic acid of the formula:R(SO.sub.3 H).sub.nwherein R is an aromatic or alkyl aromatic hydrocarbon group having 6 to 15 carbon atoms and n is an integer from 1 to 3. The solution may also contain up to 80 volume percent (based on the total quantity of solvent) of an organic solvent miscible with water and having a boiling point below about 150.degree.C. This solution may be used to finish paper, leather or textiles and to shrink proof keratin containing textiles.

Abstract: The present invention relates to a process of producing .alpha., .alpha., .alpha., .alpha.', .alpha.', .alpha.'-hexakisaryl-1,3- and -1,4-dimethyl benzenes by reacting .alpha., .alpha., .alpha.', .alpha.'-tetrakisaryl-1,3 or -1,4-bis-(chloromethyl)- or -bis-(hydroxymethyl)- benzenes with 2 to 30 times the molar quantity (based on the tetrakis benzene) of phenol or a substituted phenol.