Abstract: The present invention relates to a process for the preparation of a synthetic leather which comprises converting a leather perfume into the corresponding cyclodextrin clathrate compound, powdering the clathrate compound by drying, mixing the powder with a synthetic resin material and molding the mixture to form a synthetic leather material, thus imparting a natural leather-like material odor to the synthetic leather.

Abstract: Aromatic oligomers, in particular arylene ketone and arylene sulfone oligomers, are prepared by reacting an appropriate monomer system in the presence of free Lewis acid and a complex between a Lewis acid, for example, aluminum trichloride, and a Lewis base, for example, N,N-dimethylformamide, and, optionally, a diluent, such as methylene chloride. The process is particularly advantageous for the preparation of substantially or all paralinked arylene ether ketone oligomers as the presence of the Lewis acid/Lewis base complex markedly reduces alkylation and ensures the substantial absence of ortho substitution. The monomer system can be, for example, a self-reacting monomer such as p-phenoxy-benzoyl chloride or a two-monomer system such as 1,4-diphenoxybenzene and terephthaloyl chloride.

Abstract: Described is a process for improving the color of thermoplastic polymers by contacting the polymer with a peracid, hydrogen peroxide or other peroxygen compound.

Abstract: Novel branched copolyetherketones comprising condensation products of diphenyl ether, aromatic acid halides and trifunctional comonomers are disclosed.

Abstract: In a process for the production of linear segmented polyurethane by simultaneous reaction of macrodiols, low-molecular diols as chain-lengthener and aromatic diisocyanate, in a solvent in the presence of catalyst, and in the presence of catalytic amounts of a magnesium or calcium salt, an aromatic carboxylic acid macrodiol, monomeric, lower-molecular diol and aromatic diisocyanate are reacted, the macrodiol being used in such amounts as to adjust in the prepared polyurethane a weight ratio of soft segment to hard segment of about 4:1 to 1:4. Preferred embodiments include reaction at temperature from about 70.degree. to 120.degree. C.; use of an inert solvent; and having the concentration of starting material amount to about 10-40% by weight relative to the mixture of starting material and solvent. Also provided are polyurethanes obtained according to this process, having a molecular non-uniformity from 2 to 7.

Abstract: The invention is a process for the preparation of such 3-halo-2-hydroxyalkyl carbamates which comprises contacting an epihalohydrin carbonate with a secondary amine-containing compound, wherein the secondary amine has a pKa at which the secondary amine will react with the epihalohydrin carbonate and which does not catalyze the formation of unwanted by-products, in a polar organic solvent under conditions such that a 3-halo-2-hydroxyalkyl carbamate, wherein the carbamate nitrogen is tertiary, is prepared.

Abstract: The object of the invention are adhesion promoters for plastisols of polyvinylchloride polymers or copolymers, characterized in that they are constituted by polyaminoamidic resins obtained by means of the condensation of:1 equivalent of carboxylic acids, obtained by polymerization of unsaturated fatty acids, of composition comprised within the following ranges: 0-2% monomers, 10-50% dimers, 50-90% trimers, withfrom 1.0 to 2.2 equivalents of an heterocyclic amine of general formula ##STR1## wherein R can be H or an alkylamino group --R'--NH.sub.2, wherein R' is a saturated alifatic chain.

Abstract: Aromatic polyetherketones containing the repeat units:--O--Ph--O--Ph--CO--Ph-- Iand--O--Ph--Ph--O--Ph--CO--Ph-- IIin the relative molar proportions I:II of 95:5 to 60:40, preferably 90:10 to 60:40. The polymer typically has a melt viscosity of at least 0.06 kN.s.m..sup.-2 preferably at least 0.1 kN.s.m..sup.-2. Preferred polymers are tough. The polymers may be made by condensation of hydroquinone, 4,4'-dihydroxydiphenyl and 4,4,'-difluorobenzophenone in the presence of an alkali metal carbonate or bicarbonate and of an aromatic sulphone solvent, e.g., diphenylsulphone. Polycondensation is effected at 150.degree.-400.degree. C. The polymers are very useful for wire coating.

Abstract: This invention relates to special combinations of polyurethane-urea-forming starting components which are suitable for corrosion-inhibiting wear prevention by casting, centrifugal casting or spraying. Said components are liquid, relatively low viscosity mixtures of polymer-containing or polyadduct-containing polypropylene oxide polyols and/or ethylene oxide-containing polypropylene oxide polyols having a small content of special, low-melting, readily soluble aromatic diamines and tertiary amine catalysts as component (A) which are reacted at room temperature with liquid polyisocyanates based on diphenyl methane diisocyanate or their NCO-prepolymers with polyether polyols as components (B).

Abstract: A novel series of polymers and copolymers based on a polyimide backbone with the incorporation of carbonate moieties along the backbone. The process for preparing these polymers and copolymers is also disclosed as is a novel series of dinitrodiphenyl carbonates and diaminodiphenyl carbonates. The novel polymers and copolymers exhibit high temperature capability and because of the carbonate unit, many exhibit a high degree of order and/or crystallinity.

Abstract: Polyisocyanurate foams are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol mixture prepared by digesting polyalkylene terephthalate, particularly polyethylene terephthalate, with a polyol, especially a glycol. Laminates of such foams exhibit a high degree of fire resistance, low smoke evolution on combustion, low foam friability and high compressive strength.

Abstract: Polyaryletherketones are prepared by polymerization of a halogen-containing aryl ketone in the presence of a stoichiometric excess of a base and a copper salt. The halogen-containing aryl ketone may be 4-chloro-4'-hydroxybenzophenone. A basic copper salt may be used but the base used to provide the excess of base is an alkali metal hydroxide, carbonate or bicarbonate.

Abstract: A polyamide resin composition is described, which is characterized by blending a polyamide resin with a composition (A) comprising (i) either polyamide-rubber copolymer or polyolefin resin, and (ii) a tackiness providing resin wherein either said polyamide-rubber copolymer or the polyolefin resin is from 80 to 20% by weight based on the composition (A), and the tackiness providing resin is from 20 to 80% by weight based on the composition (A).

Abstract: The invention relates to a process for the production of substituted polyarylethers from par-substituted phenols.

Abstract: Crosslinked oxyalkylated polyalkylenepolyamines which can be obtained by reacting polyalkylenepolyamines, which are completely oxyalkylated at the nitrogen atoms, in each case by from 10 to 300 groups, and possess from 50 to 2,000 repeating alkyleneimine units in the molecule, with from 0.5 to 10% by weight, based on the oxyalkylated polyalkylenepolyamines, of a crosslinking compound which possesses two or more functional groups which are capable of reacting with the terminal alcohol groups of the oxyalkylated polyalkylenepolyamines, and a process for breaking water-in-oil emulsions.

Abstract: Novel copolyetherketones derived from diphenyl ether and aromatic diacids or diacid halides are disclosed where the diphenyl ether is present in a molar excess relative to the diacid or diacid halide chlorides of about 2 to 8%.

Abstract: A prosthesis adapted to be formed and reformed to a model made of a person's body part, and comprised of a blank member of cured vinyl plastic or the like prepared for formation and reformation and to be softened to a plastic condition at raised temperature substantially below its previous curing temperature and brought into conformity with the model countours and permitted to return to room temperature for hardening, and thereafter stripped from the model for use.

Abstract: An aromatic polyether ketone comprising 5 to 100 mole % of units having the formula: ##STR1## and 0 to 95 mole % of units having the formula: ##STR2## and having a reduced viscosity of about 0.1 to about 4.0 (30.degree. C.), is novel and excellent in the properties such as heat resistance, chemical resistance and relatively easily melt processable. When at least one terminal group of the polymer is capped with an inert aromatic group, the properties are further improved.

Abstract: A crosslinkable composition comprising a polyepoxide and a polyacid which is the half-ester formed from reacting an acid anhydride with a polyol is disclosed. The compositions are useful as coatings, particularly as clear coats in color-plus-clear coatings.

Abstract: Oligomers of polyarylene polyethethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 are converted to difunctionalized oligomers so as, in the first instance, to provide a reactive double bond (for example, a vinylbenzyl group) at each end of the PAPE; and, in the second instance, to provide a triple bond (benzylethynyl group) at each end of the PAPE. The PAPE most preferably has a repeating unit which is the residuum of two dihydric phenols or thiophenols ("DHP") linked through a C=O, --S--S--, or --SO.sub.2 -group, or a Si or C atom, and or ether O, or thioether S atoms. The preferred repeating unit is formed by reaction of a DHP such as bisphenol A (BPA) with a halogenated DHP such as dichlorophenyl sulfone (DCPS) so as to provide an alternating configuration. The repeating unit may also include a linking residue of a reactive solvent which residue provides chain extension in the backbone.