Abstract: The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having a very low level of metal ions, utilizing a specially treated anion exchange resin. A method is also provided for producing photoresist composition having a very low level of metal ions from such novolak resins and for producing semiconductor devices using such photoresist compositions.

Abstract: The present invention is directed to a process for the carbonylation of an arylene to an arylaldehyde (e.g., toluene to tolualdehyde) in the presence of a solid acid catalyst. The process for making tolualdehyde comprises carbonylating toluene in the presence of either carbon monoxide or a source of carbon monoxide and in contact with a solid acid catalyst. The reaction is carried out at a temperature ranging from -40.degree. to 200.degree. C., and at a pressure ranging from 20-4000 psig.

Abstract: Fibrous structures containing immobilized particulate matter and processes for making them are disclosed. These structures may be used for filters and for fabrics including chemical defense garments and others. The fibrous structures have webs containing composite fibers having a lower melting component and a higher melting component. The particles are distributed into the interior of the web and fused to the low melting component of the individual fibers without substantially reducing the available surface area of the particle. A fibrous structure of a composite staple having a nylon sheath and a polyester core, with activated carbon particles bonded to the sheath is specifically disclosed.

Abstract: A silicone release polyester film coated with an aqueous silicone coating composition on one surface. The aqueous silicone release coating composition is made up of an alkylvinylpolysiloxane containing vinyl groups, a tin or platinum catalyst, a glycidoxysilane and an alkylhydrogenpolysiloxane. A process for coating a polyester film with the aqueous silicone coating composition is also disclosed, where the coating occurs in-line, disclosing the manufacturing process for the film before it is heat-set. The silicone release coated polyester film has an acceptable release value when subjected to solvents or heat.

Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.

Abstract: This invention claims a warp knit, weft inserted geogrid fabric without a topcoat, comprising a bicomponent fiber having filaments each with a sheath of a polyolefin material and about 0.5 to about 2 weight percent carbon black and a core of polyethylene terephthalate.

Abstract: Continuous seamless cross-plied battery separators are formed by bringing at least two anisotropic with respect to mechanical strength (e.g. uniaxially oriented), microporous plies into adhering face contact such that the uniaxial orientation of one microporous ply is angularly biased relative to the other microporous ply (e.g., between 20.degree. to 90.degree.). This biased relationship between the microporous plies is most preferably achieved by spirally or helically slitting a tubular microporous membrane. The plies are adhered to one another with adhesive and/or by means of heat and pressure. The cross-plied battery separators of this invention exhibit increased puncture strength without significant decrease in permeability.

Abstract: The present invention provides methods for producing water insoluble, aqueous alkali soluble novolak resins having consistent molecular weight and a very low level of metal ions, utilizing a solid acid condensation catalyst. A method is also provided for producing photoresist composition having a very low level of metal ions from such novolak resins and for producing semiconductor devices using such photoresist compositions.

Abstract: A particulate filter structure and method for making the structure are disclosed. The structure includes a stable framework of relatively large denier fibers having a lower melting component and a higher melting component. The larger denier fibers have a denier of from about 30 dpf or more and are bonded by the lower melting component at the crossover points. Smaller denier fibers, which preferably are of the same composition as the larger denier fibers are immobilized onto the framework formed by the larger denier fibers by applying heat. Functional particulate such as activated carbon is immobilized primarily onto the smaller denier fibers, also by application of heat.

Abstract: In an improved power transmission belt, the circumferentially disposed reinforcing cords are made from multi-filament yarns of heterofilaments. These cords, when fused, have good inter-filament bonding without the solvent of the solvent/adhesive systems.

Abstract: The present invention provides methods for producing TPPA having low level of metal ions, utilizing treated ion exchange resins. A method is also provided for producing photoresist composition having a very low level of metal ions from such TPPA for producing semiconductor devices using such photoresist compositions.

Abstract: The present invention relates to a novel antireflective coating solution and a process for its use in photolithography. The antireflective coating solution comprises a novel polymer and an organic solvent or a mixture of organic solvents, where the novel polymer comprises a unit containing a dye that absorbs from about 180 nm to about 450 nm and a unit containing a crosslinking group.

Abstract: A resin composition which comprises:(A) from about 99.5 to about 70 percent by weight, based on the total weight of components (A) and (B), of a poly(arylene sulfide) having a melt viscosity of from about 300 to about 8,000 poise at 1,200 sec.sup.-1 and 310.degree. C.;(B) from about 0.5 to about 30 percent by weight, based on the total weight of components (A) and (B), of a substantially non-functionalized, emulsion cured silicone rubber which is the condensation product of (i) an organopolysiloxane having at least two active hydrogen functional groups per molecule, and (ii) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, said silicone rubber being melt dispersable with the poly(arylene sulfide); and(C) from about 0.1 to about 2.0 parts by weight, based on 100 parts by weight of components (A), (B) and (C) combined, of an aminosilane, wherein said composition has been prepared by combining components B and C with component A in the absence of a dispersion medium.

Abstract: The present invention relates to a novel aqueous antireflective coating solution and a process for its use in photolithography. The antireflective coating solution comprises a novel polymer and water, where the novel polymer of the antireflective coating comprises at least one unit containing a dye that absorbs from about 180 nm to about 450 nm, at least one unit containing a crosslinking group and at least one unit derived from a hydrophilic vinyl monomer or a vinyl monomer capable of becoming hydrophilic.

Abstract: The present invention is directed to a process for the recovery of an organic acid. The organic acid is generated from the manufacture of a cellulose ester. The first step of the process is to remove the organic acid from the manufacture of cellulose ester. The acid is in the form of a weak acid stream comprising of the organic acid and water. The weak acid stream is resolved, via a solvent extraction, to form an extractor overhead stream and raffinate stream. The raffinate stream comprises solvent, water, and alcohol. The alcohol is produced in the recovery process by hydrolysis of the solvent after the solvent extraction. The raffinate stream is resolved into a overhead stream and a bottom stream. The overhead stream comprises water, alcohol, and solvent. Excess organic acid is added to the overhead stream to form a feed stream. The feed stream is catalyzed, via ion exchange resins, whereby a portion of the alcohol is esterified to the solvent.

Abstract: The present invention is directed to a man-made fiber comprising a cellulose ester and 0.05 to 5.0% by weight of a titanium dioxide having an average particle size of less than 100 nanometers.

Abstract: A method of preparing 7,8-difluoro-2,3-dihydro-3-methyl-4H-1,4 benzoxazine. The method includes the steps of reacting 2,3,4-trifluoroaniline or trifluoronitrobenzene with hydroxyacetone or a derivative thereof under reducing conditions to yield N-(3-hydroxy-2-propyl)-2,3,4 trifluoroaniline. The N-(3-hydroxy-2-propyl)-2,3,4-trifluoroaniline is treated with a base to yield the above-mentioned benzoxazine.

Abstract: A self-lubricating polymeric composition, characterized as a melt blend of a thermoplastic polymer and a lubricating system containing ultra high molecular weight polyethylenes, a polyester, acid metal salts, calcium salts, antioxidants and stabilizers. The composition may be prepared into shaped articles which exhibit improved surface wear resistance and coefficients of friction.

Abstract: Ternary mixtures of C.sub.4 to C.sub.8 alkyl acetate, C.sub.4 to C.sub.8 alkyl alcohol, and water, formulated to have a flash point of above 100.degree. F., are disclosed, particularly for use in edge residue removal processes in the fabrication of integrated circuits and like products.

Abstract: A recyclable thermoplastic tufted fabric made of a partially meltable primary backing and tufts tufted into the primary backing. The tufts are bonded to the backing by partially melting the backing to bond the tufts and applying a secondary backing. Such a carpet can be recycled through processes known to recycle polyester.