Abstract: A resin composition is disclosed, which comprises(A) 100 parts by weight of(a) 1 to 50% by weight of polyphenylene ether or polyphenylene ether-containing resin composition,(b) 10 to 90% by weight of propylene polymer, except a propylene polymer modified with an oxygen-containing unsaturated compound,(c) 10 to 40% by weight of propylene polymer modified with an oxygen-containing unsaturated organic compound, and(d) 0 to 30% by weight of rubber-like substance which is elastic at room temperature, and(B) 3 to 60 parts by weight of(e) glass fiber. The resin composition has the remarkable effect that it not only has favorite mold processability but also is superior in balance among various physical properties of shaped articles resulting therefrom.

Abstract: A liquid crystalline polyester resin composition containing (A) a polyphenylene ether which is modified with at least one amine selected from the group consisting of primary amines and secondary amines; (B) a liquid crystalline polyester; and optionally (C) at least one oil selected from the group consisting of white oil and phenyl ether type oils, which composition has improved moldability and provides a molded article having improved weld strength while maintaining good heat resistance and mechanical properties of the liquid crystalline polyester.

Abstract: Disclosed are thermoplastic resin compositions, comprising:(a) a polyphenylene ether resin or a resin composition containing a poplyphenylene ether,(b) a modified propylene polymer, or a propylene based resin composition containing the modified propylene polymer and/or a propylene polymer, and(c) optionally, a rubbery substance,wherein the proportion of the component (a) to the sum of the components (a) and (b) is 1 to 90% by weight, and that of the component (b) to the sum of the components (a) and (b) is 99 to 10% by weight, and when the component (c) is present, the proportion of the component (c) to the sum of the components (a) and (b) is 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

Abstract: Disclosed herein is a thermoplastic resin composition comprising:(a) a polyphenylene ether or a composition containing a polyphenylene ether,(b) (i) a modified propylene polymer obtainable by grafting a propylene polymer with a styrene-based monomer alone or in combination with a monomer copolymerizable with a styrene-based monomer, or (ii) a composition composed of said modified propylene polymer and a propylene polymer,(c) a rubbery substance, and(d) an inorganic filler having an average particle diameter of 0.05-10 .mu.m.Not only does this resin composition exhibit good processability but it also provides molded articles having well-balanced physical properties.

Abstract: A thermoplastic resin composition is disclosed which comprises(a) a modified polyphenylene ether or a composition containing it, and(b) (i) a modified propylene polymer comprising propylene polymer which is graft-copolymerized with a styrene based monomer or with a mixture of a styrene based monomer and a monomer copolymerizable therewith, or (ii) a composition containing the modified propylene polymer in (b)-(i) and propylene polymer. The resin composition may contain (c) a rubber-like substance containing at least one rubber-like substance having a polar group and/or (d) a melt flow characteristics improving agent.

Abstract: Disclosed herein is a thermoplastic resin composition which comprises:(a) polyphenylene ether or a composition containing polyphenylene ether,(b) (i) a modified propylene polymer grafted with a styrene-based monomer or a mixture of a styrene-based monomer and a monomer copolymerizable with the styrene-based monomer, or (ii) a composition containing said modified propylene polymer and a propylene polymer,(c) a rubbery substance, and at least one component selected from the following three components;(d) a styrene resin having a melt index of 8 or above (at 250.degree. C. under a load of 5 kg),(e) a low-molecular weight hydrocarbon resin, and(f) white oil and/or liquid paraffin.This thermoplastic resin composition exhibits not only good moldability but also well-balanced physical properties and heat resistance, and can be easily processed into molded articles having outstanding physical properties.

Abstract: Disclosed are thermoplastic resin compositions, comprising:(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,(b) a modified propylene polymer, or a propylene based resin composition containing the modified propylene polymer and/or a propylene polymer, and(c) optionally, a rubbery substance, wherein the proportion of the component (a) to the sum of the components (a) and (b) is 1 to 90% by weight, and that of the component (b) to the sum of the components (a) and (b) is 99 to 10% by weight, and when the component (c) is present, the proportion of the component (c) to the sum of the components (a) and (b) is 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

Abstract: A thermoplastic resin composition having excellent heat resistance and impact resistance as well as having excellent rigidity, chemical resistance and processibility, comprising:(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,(b)(i) a modified propylene polymer grafted with a styrene-based monomer and an unsaturated carboxylic acid or its derivative, or(ii) a propylene-based resin composition containing the modified propylene polymer and a propylene polymer, and(c) a rubbery substance. The thermoplastic resin compositions not only have good mold-processibility but also exhibit well-balanced physical properties when molded into articles.

Abstract: Disclosed are thermoplastic resin compositions comprising:(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,(b) (i) a modified propylene polymer obtainable by grafting a propylene polymer with a styrene-based monomer or a mixture of a styrene-based monomer and a monomer copolymerizable with the styrene-based monomer or (ii) a composition comtaining said modified propylene polymer and a propylene polymer, and(c) a rubbery substance,wherein the number mean particle size of the component (a) and (c) in the dispersion phase being from 0.01 to 20 .mu.m, the proportion of the component (a) to the sum of the components (a) and (b) being 1 to 80% by weight, that of the component (b) to the sum of the components (a) and (b) being 99 to 20% by weight, and the proportion of the component (c) to the sum of the components (a) and (b) being 1 to 50 parts by weight per 100 parts by weight of (a) plus (b).

Abstract: Disclosed is a thermoplastic resin composition, comprising:(a) a polyphenylene ether resin or a resin composition containing a polyphenylene ether,(b) (i) a modified propylene polymer obtainable by grafting a propylene polymer with a styrene-based monomer or a mixture of a styrene-based monomer and a monomer copolymerizable with the styrene-based monomer or (ii) a composition containing said modified propylene polymer and a propylene polymer, and(c) two or more rubbery substances, at least one rubbery substance being compatible with the component (a), and at least one rubbery substance being not compatible with the component (a). The thermoplastic resin composition has good moldability and yields molded articles having well-balanced physical properties.

Abstract: Disclosed herein is a thermoplastic resin composition which comprises:(a) a polyphenylene ether resin or a polyphenylene ether-containing resin composition,(b) a polypropylene grafted with a styrene-based monomer and/or a propylene copolymer grafted with a styrene-based monomer,(c) an ethylene-.alpha.-olefin copolymer grafted with a styrene-based monomer, said ethylene-.alpha.-olefin copolymer having a density of 0.85-0.91 g/cm.sup.3 and a maximum melting peak temperature of 100.degree. C. and above measured with a differential scanning calorimeter (DSC), and(d) optionally, rubbery substance. Also disclosed herein is a process for producing a thermoplastic resin composition which comprises incorporating a preblend composed of:(a') a polyphenylene ether resin or a polyphenylene ether-containing resin composition,(b') a polypropylene and/or a propylene copolymer,(c') an ethylene-.alpha.-olefin copolymer having a density of 0.85-0.91 g/cm.sup.3 and a maximum melting peak temperature of 100.degree. C.

Abstract: An optical fiber with low attenuation of light transmission comprising a core and a cladding, wherein the core is made of a polymer comprising units of deuterated methyl methacrylate containing 10 to 40% of a methacrylic ester the ester moiety of which has an alicyclic hydrocarbon group of from 6 to 20 carbon atoms, and the cladding is made of a transparent polymeric material having a refractive index of at least 3% smaller than that of the core, which optical fiber has excellent heat and humidity resistance as well as good flexibility.

Abstract: A plastic optical cable comprising a core, a cladding layer and a protective layer made of an ester type thermoplastic elastomer, which has low degree of thermal shrinkage and low attenuation of light transmission even at high temperature.

Abstract: A plastic optical fiber comprising a core and a cladding, wherein the core is made a polymer comprising units of methyl methacrylate and of a methacrylate ester, the ester moiety of which has an alicyclic hydrocarbon of 8 to 20 carbon atoms, and the cladding is made of a fluorine-containing polymer comprising units of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or C.sub.1 -C.sub.3 alkyl, R.sub.f1 is fluorine or trifluoromethyl, an R.sub.f2 is C.sub.2 -C.sub.10 fluoroalkyl, which units (I) are derived from fluoroalkyl .alpha.-fluoroacrylate or trifluoromethacrylate, which has short- and long-time heat and humidity resistance as well as low attenuation of light transmission.