Abstract: The present invention is a sulfur stabilized composition. The composition comprises an oxidized polyolefin, preferably oxidized polyethylene or oxidized polypropylene, with oxidized polyethylene being most preferred. The composition of the present invention can comprise oxidized polyolefin, asphalt, preferably oxidized, and optionally a filler.

Abstract: A melt processable fluoropolymer compositon stabilized against thermal degradation by incorporating therein a stabilizing system comprising (a) a hindered phenol pentaeythritol diphosphite, and (b) a salt of a carboxylic acid and a metal of Group II of the Periodic Table.

Abstract: The present invention is a sulfur stabilized composition. The composition comprises an oxidized polyolefin, preferably oxidized polyethylene or oxidized polypropylene, with oxidized polyethylene being most preferred. The composition of the present invention can comprise oxidized polyolefin, asphalt, preferably oxidized, and optionally a filler.

Abstract: An apparatus and method of splicing polymeric webs using an ultrasonic welder and a web support means. There is a means to secure the trailing end of at least one first web and the leading end of at least one second web between the ultrasonic welder and the web support means. The trailing end of the first web and the leading end of the second web overlap between the ultrasonic welder and the web support means and are welded together.

Abstract: The present invention is an oven and method of operation for heating thermoplastic articles. Articles are fed into the oven on a conveyor belt. There is a heating plate directly beneath the article bearing surface of the conveyor belt which heats the supported side of the article. The surface of the article not in contact with the belt is heated by conventional means within the oven.

Abstract: This invention is an improvement to the continuous method to polymerize caprolactam at temperatures over 220.degree. but below 280.degree. C. in the presence of free water, a catalyst capable of generating phosphoric acid at the reaction conditions, in the hydrolyzer to form a prepolymer, with subsequent stripping of water and other low boiling compounds, and with completion of polymerization in a final finisher under a vacuum. The improvement comprises limiting the amount of free water fed to the polymerization process to less than about 1.5 percent but above 0.

Abstract: An improved polymer sheet. The improvement is at least one surface polymer film layer and at least one fabric veil. A veil is laminated between each surface polymer film layer and the polymer sheet. There is a method of heating a polymer sheet containing the improvement of the present invention.

Abstract: A composition of matter comprising a polyamide, preferably polyepsiloncaprolactam, and from 1 to 65 percent of an ethylene vinyl alcohol copolymer. The composition is useful for making moldings, films, and fibers.

Abstract: An apparatus for cleaning spools having a support means and a first and second chuck rotatably mounted on the support means. The first and second chucks having coinciding axes of rotation with first chuck facing the second chuck. There is at least one cleaning arm having a supported end and a free end. The cleaning arm is supported at a location so that the free end of the cleaning arm is offset from the axis of rotation of the chucks. There is a means to rotate at least one of the chucks and a means to move the free end of the cleaning arm parallel to the axis of rotation of the chucks.

Abstract: This invention is a method of making and polymer of heat resistant polyester, being characterized by the reaction product of a polyester which consists of the aromatic dicarboxylic acid and a glycol with 2-6 carbons reacted with 0.2-5 weight % of a bifunctional epoxy compound which is expressed by the general formula ##STR1## wherein R is benzene ring, naphthalene ring, cyclohexane ring, cyclohexene ring or pyridine ring; and R may have a substitution group to keep the amount of the end carboxyl groups below 15 gram equivalents per 10.sup.6 grams of polymer.

Abstract: This invention is a polymer and a method of making heat resistant polyester characterized by reacting the polyester, consisting of aromatic dicarboxylic acid and the glycol component with 2-6 carbons, with 0.1-5 weight % of the bifunctional epoxy compound which is expressed by the following general formula (A) or (B): ##STR1## (R is a divalent organic group) and has 2 or 3 carbonyl groups adjacent to the nitrogen atom, to reduce the amount of the end carboxyl group to below 15 g equivalent/10.sup.6 g polymer.

Abstract: This invention is a polymer and a method of making heat resistant polyester which is characterized by reacting the polyester which consists of aromatic dicarboxylic acid and glycol with 2-6 carbons, with 0.1-5 weight % of the bifunctional epoxy compound which has one carbonyl group adjacent to the nitrogen atom and is expressed by the general formula ##STR1## (R is a divalent organic group) to keep the amount of end carboxyl group below 15 g equivalent/10.sup.6 g polymer.

Abstract: This invention is a nylon fiber useful for improved comfort for wearers of apparel fabric made therefrom comprising (a) from about 5 to 15 percent by weight of poly (N,N-dimethylacrylamide) having a molecular weight which in a 25% aqueous solution gives a viscosity of from about 20 to 1 000 centipoise (0.02 to 1.0 Pa.s) at 25.degree. C. and (b) correspondingly from about 85 to 95% by weight nylon.

Abstract: This invention is a method to dye nylon carpet in a pattern. Improvement comprises adding a reducing agent selected from a group consisting of zinc formaldehyde sulfoxylate, sodium formaldehyde sulfoxylate, thiourea dioxide and mixtures of the formaldehyde sulfoxylate salts with a dye selected from a group consisting of acid, direct, dispersed, fiber reactive and mixtures thereof; also adding an activator for the reducing agent and a stabilizer for the dye bath. Then the dyed carpet is steamed to activate the reducing agent. This makes a dyed pattern that is reproducible, controlled and has differential multicolorations. Each of the dyes is selected for its known characteristic behavior with the activator reducing agent, whether it is completely unaffected, partially affected or completely destroyed. Each dye is applied at a time during the dyeing so that its characteristic effect produces the desired multicoloration effect.

Abstract: This invention is a method to restore the metal content of a supported noble metal hydrogenation catalyst comprising adding the appropriate amount of a noble metal salt of a weak acid to a fluid feed passing across the catalyst.

Abstract: Method of manufacturing polyester fibers with good adhesiveness to rubber, characterized in that in the process of making polyester fiber into yarn, a yarn-making oil (spin finish) containing an epoxy compound and an alkylene oxide adduct of an amine compound containing an alkoxysilane group is added to the polyester fiber, and it is then heat-treated.

Abstract: In the process of phenol hydrogenation to cyclohexanol, improved yields of cyclohexanol are obtained by maintaining a hydrogen atmosphere throughout the entire operation. Of particular importance is that the hydrogen atmosphere is maintained during the time period when the nickel catalyst is allowed to settle and prior to decantation of the clear liquids.

Abstract: Alpha-methyl styrene, obtained as a byproduct in the manufacture of phenol is hydrogenated to cumene using hydrogen and standard hydrogenation catalysts which are selective for the ethylenic side chain. Prior to hydrogenation the alpha-methyl styrene is treated to effect removal of hydroxy acetone present. By reducing or eliminating hydroxy acetone, poisoning of the catalyst is prevented. Hydroxy acetone is removed from the alpha-methyl styrene by catalytic pretreatment.

Abstract: A method of manufacturing polyester fibers with good adhesion to rubber is disclosed, characterized in that, in the process of spinning polyester fiber, a spinning oil containing an epoxy compound, an ethylene urea compound, and an ethylene urea compound polymerization catalyst is added, and it is then heat treated.

Abstract: This invention is a transparent alcohol resistant, hot water resistant, thermoplastically formable copolymer of (A) 80.4 to 88.8 weight percent epsilon-caprolactam and the remaining (B) 11.2 to 19.6 weight percent of substantially equimolar portions of a moiety derived from (1) a diamine or diisocyanate and (2) a diacid or (c) 11.2 to 19.6 weight percent para amino benzoic acid.