Abstract: A method for prevention of loss of transparency of shaped articles prepared from a polyarylene ester blend comprising a polyarylene ester and other thermoplastic resin when treated with steam or boiling water, which comprises reducing the sodium content of the blend to less than 70 ppm.

Abstract: A process for producing a resin composition which comprises melt-blending 30 to 95% by weight of a polyamide with 70 to 5% by weight of a polyphenylene oxide.

Abstract: A process for producing a graft copolymer characterized by melt-blending 100 parts by weight of a resin mixture comprising 90 to 10% by weight of a polyphenylene oxide having a structural unit of ##STR1## (wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents hydrogen, a halogen atom, a hydrocarbon or substituted hydrocarbon radical) and 10 to 90% by weight of a styrene polymer in the presence of 0.01 to 5 parts by weight of a compound containing nitrogen and oxygen selected from oxime compounds and nitroso compounds.

Abstract: A resin composition comprising a resin composition comprising 5 to 95% by weight of a polyphenylene oxide and 95 to 5% by weight of a polyamide and 0.01 to 30 parts by weight of a member selected from the group consisting of (A) liquid diene polymers, (B) epoxy compounds and (C) compounds having in the molecule both of (a) an ethylenic carbon-carbon double bond or a carbon-carbon triple bond and (b) a carboxylic acid, acid anhydride, acid amide, imido, carboxylic acid ester, amino or hydroxyl group per 100 parts by weight of the total of the polyphenylene oxide and polyamide.

Abstract: A method for producing a modified polyphenylene oxide which comprises polymerizing 69 to 25 parts by weight of a mixture of 97 to 45% by weight of a styrene monomer and 3 to 55% by weight of a polar vinyl mononer at 90.degree. to 190.degree. C. using 0.3 to 10 parts by weight of a radical initiator in an aqueous dispersion containing a dispersion stabilizer alone or in combination with at least one of a surfactant and an adhesion-preventing agent in the presence of 31 to 75 parts by weight of a polyphenylene oxide having a unit structure of the formula, ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each a hydrogen or halogen atom, or a hydrocarbon, substituted hydrocarbon, cyano, hydrocarbonoxy, substituted hydrocarbonoxy, nitro or amino group.

Abstract: A plug body for a plastic container for blood or the like wherein a rubber plug has upper and lower surfaces covered to be positioned by thermoplastic films, the surface of the thermoplastic film is partly exposed to serve as an inserting opening for an injection needle or the like, and an injection molded portion is surrounded with thermoplastic material of the same quality as the thermoplastic film.

Abstract: A gum base for the coldproof chewing gum comprises 0 to 15% of natural resin, 10 to 20% of vinyl acetate resin, 6 to 16% of ester gum, 12 to 25% of rubber, 12 to 20% of wax, 14 to 20% of emulsifier and 10 to 20% of filler. The coldproof chewing gum may be combined with a frozen dessert such as an ice cream. A coldproof bubble chewing gum is also disclosed.

Abstract: A method for the isolation of aromatic polyesters of a uniform and fine powder which comprises mixing a 1,2-dichloroethane solution containing 8 to 50% by weight of an aromatic polyester copolymer with 0.01 to 1.0 time by volume (based on said solution) of methanol, and isolating the resulting precipitates, said 1,2-dichloroethane solution containing an aromatic polyester copolymer being produced by contacting an aqueous alkaline solution of 2,2-bis(4'-hydroxyphenyl)propane with a 1,2-dichloroethane solution of a mixture of terephthaloyl chloride and isophthaloyl chloride.

Abstract: In a device for correcting, with respect to the reference plane of an object having a group of contour lines thereon, the positional deviation and variation in the reduced scale created corresponding to the height of each contour line when the object is photographed through a photographic objective, there is provided means for tracing each of the contour lines photographed on the film and generating a position signal for each of the contour lines. A correction mechanism is rotatably supported at a point (N), and has introduced thereinto the ratio between the distance (H) from the center of the photographic objective to the reference plane of the object and the distance (.DELTA.H) from any of the contour lines being traced by the signal generating means to the reference plane. The correction mechanism receives at the input side thereof the position signal from the signal generating means to generate a position signal (P') which satisfies the relation that P' = (1 - (.DELTA.

Abstract: A process for the production of aromatic polyesters which comprises preparing a prepolymer by subjecting the compounds of the formulae: ##STR1## to heat-polycondensation in the molar ratios of (I) : (II) = 1 : 100 to 100 : 1 and (II) : (III) = 1 : 10 to 10 : 1, pulverizing the prepolymer thus prepared and then heating the resultant in an inert gas or under reduced pressure.

Abstract: A device for deriving the contour lines for an object from stereophotographic films taken through photographic lenses comprises steroscopic viewing apparatus for comparing the films to locate the different points on the object having a selected height and for producing first position signals representing the positions of the different points in one of the films, and a correction mechanism responsive to the first position signals for producing second position signals which represent corrected positions of the points for defining a contour line corresponding to the selected height.