Abstract: A resin composition which consists essentially of a thermoplastic resin, in which are included an alkali metal salt, and at least one kind of substances selected from the group consisting of vinylidene fluoride resin and dipolar aprotic solvents.

Abstract: Compositions comprising an organotin mercaptide, organotin sulfide, organotin carboxylate or mixtures thereof and a diester of an ethylenically unsaturated dicarboxylic acid having one carboxyl group on each carbon atom of the ethenylene group are useful for stabilizing halogen-containing organic polymers against the deteriorative effects of heat, light and weathering.

Abstract: Disclosed is a composition comprising about 5 to about 95 phr of a polyepoxide or other resinous component, about 20 to about 90% of an aprotic solvent, about 5 to about 95 phr of a polyimide having sufficient amic acid functionality to be soluble in the solvent, and sufficient water to hydrolyze the polyimide. A laminate is made from the composition by heating it until the amic acid functionality is substantially eliminated, then impregnating a fibrous substrate with the composition, heating the impregnated substrate to evaporate the solvent and B-stage the composition and form a prepreg, forming a stack of the prepregs, and heating and pressing the stack of prepregs to cure the composition. A wire enamel can also be made from the composition.

Abstract: Polyamic acids prepared from the condensation of dianhydrides (or trianhydrides) and diamines and preferably dissolved in a suitable solvent produce polyimide shaped articles (e.g. films) relatively free of voids, pinholes, cracks and bubbles when about 0.75 to about 5 mole percent of a polysiloxane is incorporated in the backbone of the polyamic acid.

Abstract: A soluble imide oligomer represented by the general formula ##STR1## (Definitions of R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are found in the specification.) and its preparation process are presented. A coating solution for electronic materials containing said soluble imide oligomer is also presented.

Abstract: A printing ink for capillary or jet printers adapted to form a mechanically erasable image, comprises a latex-based aqueous polymer dispersion including a water-soluble or organic-solvent soluble dyestuff coloring the particles of the dispersion without the use of additional solvent.

Abstract: This invention relates to a process for producing an organic semiconductor. More specifically, it relates to a process for producing an electrically conductive acetylene high polymer, which comprises doping an acetylene high polymer having a fibrous microcrystalline (fibril) structure with a specified electron acceptor compound, having low toxicity, to obtain an electrically conductive acetylene high polymer having an increased electrical conductivity, and flexibility and heat stability. The electrically conductive acetylene high polymer obtained by the process of this invention is a P-type semiconductor whose electrical conductivity can be freely controlled within the range of 10.sup.-9 to 10.sup.3 ohm.sup.-1.cm.sup.-1, and is useful as a material for photoelectric converter elements such as solar cells and photosensers, and as P-N hetero junction elements.

Abstract: Melt-fusible polyimides based on pyromellitic dianhydride and at least one defined aromatic diamine are useful in making low-void composites and thermoplastic tapes, which can be fabricated into articles such as, for example, aircraft and autobody panels, printed circuit boards, etc. Some of these polyimides are melt-processible and can be fabricated by conventional procedures such as extrusion and injection molding.

Abstract: A synthetic resin wound dressing (e.g., a burn wound dressing) is disclosed consisting essentially of a polymer, such as poly(2-hydroxyethylmethacrylate), referred to as PHEMA, an organic solvent, such as polyethylene glycol (PEG), and a hydrogen binding plasticizer, such as dimethylsulfoxide (DMSO). The plasticizer regulates the set-up time of the synthetic resin so that the more plasticizer present, the shorter the set-up time. The dressing may be applied to the wound site in the form of a paste for the in situ curing or setting thereof, or the dressing may be preformed and then applied to the wound site. A variety of drug agents (e.g., silver sulfadiazine) may be incorporated in the synthetic resin so as to result in the time released administration of the drug agent to the area of the skin (e.g., a burn wound site or the like) covered by the wound dressing. A method of treatment using this dressing is also disclosed.

Abstract: A polymer mixture comprising(a) a base resin selected from the group consisting of polyphenylene ether resins and polyphenylene ether modified with alkenyl aromatic resins; and(b) an amount of antistatic agent effective for improving the antistatic character of said polymer mixture wherein said antistatic agent is a compound of the formula R--SO.sub.3 X, where R is an alkyl or aralkyl radical having 5 to 25 carbon atoms and X is an alkali metal.

Abstract: An aromatic polyamic acid solution composition useful as an electrically insulating varnish, comprises (1) an aromatic polyamic acid which is a polymerization product of (A) a tetracarboxylic acid component containing at least 80 molar % of the sum of (a) a first acid ingredient consisting of 3,3',4,4'-biphenyltetracarboxylic dianhydride and (b) a second acid ingredient consisting of at least one member selected from the group consisting of pyromellitic dianhydride, and 3,3'4,4'-benzophenone tetracarboxylic dianhydride, the molar ratio of the first acid ingredient to the second acid ingredient being in the range of from 30:70 to 75:25, with (B) an amine component consisting of at least one aromatic amine in a molar ratio of the tetracarboxylic acid component to the amine component of from 97:100 to 103:100, and which polymeric acid has a logarithmic viscosity number of from 0.1 to 1.5 determined in a concentration of 0.5 g/100 ml in N-methyl-2-pyrrolidone at a temperature of 30.degree. C.

Abstract: Compositions for the application of planar and solvent resistant polyimide coatings comprising an aprotic solvent solution of selected aromatic dianhydrides which have been at least 20% esterified with a volatile alcohol and an equivalent amount of a mixture of amines comprising selected diamines and polyamines.

Abstract: The present invention deals with polymer blends comprising a polyphenylene ether and optionally polystyrene or a rubber modified polystyrene. It has been found that the addition of an alkyl or aralkyl-sulfonate to such blends improves the environmental stress cracking resistance of such blends.

Abstract: An improved wire enamel consisting essentially of the following materials by weight wherein basis is wire enamel weight; at least 50% by wt. of a polar organic solvent; about 2-8% by wt. of a polyimide precursor which can be cured to yield a polyimide polymer; about 0.5 to about 25% by weight of the substituted aliphatic hydrocarbon solvent for the polyimide precursor having a surface tension and polarity greater than that of the halogenated aliphatic hydrocarbon described below or a substituted aromatic hydrocarbon having a dipole moment less than or equal to the dipole moment of the halogenated aliphatic hydrocarbon described below; about 5 to 40% by wt. of a halogenated aliphatic hydrocarbon; and 0 to about 1% by wt. of an organosilane which increases the adhesion of the polyimide to an underlying substrate.

Abstract: A poly(conjugated polymethine-type)dye which is the polycondensation reaction product in the presence of strong protic acid of an aromatic polyamine and a dicarbonyl compound. These polymers are useful in the fabrication of optical recording elements and in other electronic applications.

Abstract: Stable, substantially acid-free, one-package moisture curable alkoxy terminated organopolysiloxane compositions are provided. These room temperature vulcanizable alkoxy terminated organopolysiloxane compositions use a condensation catalyst, a stabilizer, or scavenger for materials having chemically combined hydroxy radicals and diorganosulfoxide, such as dimethylsulfoxide which functions as a cure rate accelerator.

Abstract: A composition of materials comprising a polyamide acid-silicone intermediate obtained by reacting (a) a diaminoamide compound of the formula: ##STR1## wherein Ar and Y are as defined in the specification, (b) a diaminosiloxane, (c) a diamine, and (d) an aromatic tetracarboxylic acid dianhydride can form a protective film used in a semiconductor device excellent in adhesive properties, heat resistance and preventing soft errors due to .alpha.-rays.

Abstract: Melt-fusible polyimides based on pyromellitic dianhydride and 2,2-bis[3,5-dichloro-4-(4-aminophenoxy)phenyl]propane, alone or in combination with other defined diamines, are useful in making low-void composites and thermoplastic tapes, which can be fabricated into articles such as, for example, aircraft and autobody panels, printed circuit boards, etc.

Abstract: Absorbent articles are rendered more blood absorptive by incorporating water soluble amido compounds having the formulaH.sub.2 N--X--NH.sub.2where X is --CO--, --CS--, --SO-- or --SO.sub.2 --, and nonionic surfactants into the articles.

Abstract: Described are high-solids solutions of diol/higher polyol/aromatic acid/aliphawtic acid branched polyesters of carefully controlled composition and suitable as components of organic coatings.

Abstract: Polyurethane compositions comprising a polyurethane synthesized by reacting a diol, a specific alicyclic diisocyanate, a specific alicyclic diamine and hydrazine or isophthalic acid dihydrazide in specific proportions and a solvent therefor have good solution stability and, when applied as coating compositions, give coats with good light stability, good surface properties, high softening points and sufficient flexibility at low temperatures.

Abstract: Polymer powder is dispersed in a combination of an organic solvent for the powder and sufficient water to prevent dissolution of the powder in the organic solvent. The system is heated and the powder is dissolved in the solvent-water system. Water is thereafter removed and the system concentrated.

Abstract: A composition comprising an aromatic carbonate polymer in admixture with an effective thermal stabilizing amount of a sulfoxide compound or a sulfinyl containing polymer.

Abstract: The properties of polymeric compositions can be improved by the presence of a polysiloxane unit of formula ##STR1## where Q is a substituted or unsubstituted aromatic group,Z is ##STR2## D is unsubstituted or substituted hydrocarbylene R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 each, independently, is unsubstituted or substituted hydrocarbyl.x, y and z each independently has a value from 0 to 100.Polyimides containing these units display improved solubility and adhesion; they are useful, among other things as protective coatings.

Abstract: A rubber-toughened addition-type polyimide composition having excellent high temperature bonding characteristics in the fully cured state and improved peel strength and adhesive fracture resistance physical property characteristics is disclosed. The process for making the improved adhesive involves preparing the rubber-containing amic acid prepolymer by chemically reacting an amine-terminated elastomer and an aromatic diamine with an aromatic dianhydride with which a reactive chain stopper anhydride has been mixed, and utilizing solvent or mixture of solvents for the reaction.

Abstract: Thermoplastic compositions comprising, in intimate admixture, 10 to 90 weight percent of polyethylene terephthalate and from 90 to 10 percent of a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic imide. These compositions display desirable thermal properties, particularly elevated heat deflection temperatures.

Abstract: Nitrile barrier resin latexes containing a coalescing agent which (1) is a solvent for the nitrile barrier resin, (2) has a boiling point between 100.degree. and 300.degree. C., and (3) does not azeotrope with water are excellent oxygen barriers and have good chemical resistance when coated on various substrates. Especially effective coalescing agents are selected from the group consisting of dimethyl formamide, dimethyl acetimide, methyl pyrrolidone, dimethyl sulfoxide, glycol carbonate and tetramethylene sulfone.

Abstract: An article for electrical use such as insulative substrates, electrical circuit borads and electrical elements, wholly or partly consisting out of an aromatic polyamide-imide having a reduced viscosity of from about 0.3 to 1.5, which polyamide-imide may contain a granular material dispersed therein, and a composition comprising 100 parts by weight of said polyamide-imide and additional about 100 to 4,000 parts by weight of a granular material and optionally about 10 to 10,000 parts by weight of a polar organic solvent.

Abstract: Air- and/or oven-drying lubricant paint compositions are disclosed which are useful for providing dry-film lubrication for substrates. The compositions comprise a binder resin dissolved in an organic solvent, optionally containing an extender, and further containing a polyalkylene wax which may be modified or unmodified. The dry-film lubricant provides a coefficient of friction which is lower, more uniform and of a narrower range than the compositions of the art.

Abstract: Polyethylene terephthalate resin compositions containing filler or reinforcing agent, a selected sodium or potassium salt of a hydrocarbon acid or a salt of a selected organic polymer containing pendant carboxyl groups, and a selected low molecular weight organic ester, ketone, sulfone, sulfoxide, nitrile or amide. Articles molded from the compositions have high gloss when molded at temperatures below 110.degree. C.

Abstract: Use of a selected alkali metal salt of a polycarboxylic acid has been found to impart good crystallization and mold release properties to polyethylene terephthalate molding blends.

Abstract: Use of a selected antimonate has been found to increase flame-retardancy without lowering thermal resistivity of a polyurethane terephthalate molding blend which contains an ionic hydrocarbon copolymer or ionic salt of a hydrocarbon acid and a low molecular weight compound.

Abstract: A composition for treating oily hair or skin to reduce the oily appearance thereof comprises in an appropriate vehicle an active compound having the formula, ##STR1## wherein n is a whole number from 1-10 inclusive, p is 0, 1 or 2, and R.sub.1 is ##STR2## wherein R.sub.2 is ##STR3## or --CO.sub.2 H wherein R.sub.3 and R.sub.4 represent hydrogen, 2-hydroxy ethyl, 2-hydroxy propyl or 2,3-dihydroxy propyl; (iii) --(CH.sub.2 --CHR.sub.5) OH wherein R.sub.5 is hydrogen, methyl or hydroxy methyl; ##STR4## wherein R.sub.3 and R.sub.4 have the meanings given above; or (v) ##STR5## wherein q is 1 or 2 and A represents hydrogen, acyl, succinoyl, nictinoyl or thenoyl; with the proviso that p is other than 0 and n is other than 2-4 when R.sub.1 is (iv) or (v).

Abstract: A flowable polymeric extrusion powder consisting essentially of acrylonitrile polymer particles is provided at low temperature treated with a non-sticking amount of solvent. Sufficient solvent can be added to dissolve the polymer at elevated temperature, for instance, more than 120 parts by weight of dimethyl sulfoxide solvent can be added per hundred parts of dry polymer below ambient temperature.

Abstract: An improved solution of a polybenzimidazole suitable for use in the formation of shaped articles (e.g. fibers, films, and the like) is provided which includes a minor amount of an organo-lithium compound (as defined) which has been found to be capable of inhibiting the separation of the solution into phases of greater and lesser concentrations of the polybenzimidazole upon the passage of time. In a preferred embodiment the organo-lithium compound is lithium stearate. Not only is stability imparted to the solution prior to the formation of a shaped article, but the potential for catastrophic corrosive stress cracking of stainless steel equipment in contact with the solution is eliminated such as that which may occur following the extended use of the common prior art additive, lithium chloride.

Abstract: Polyethylene terephthalate resin compositions containing filler or reinforcing agent, a selected sodium or potassium salt of a hydrocarbon acid or a salt of a selected organic polymer containing pendant carboxyl groups, and a selected low molecular weight organic ester, ketone, sulfone, sulfoxide, nitrile or amide. Articles molded from the compositions have high gloss when molded at temperatures below 110.degree. C.