Abstract: When producing a graft modified polyolefin by melting and kneading a polyolefin, a radical-polymerizable monomer and a radical-polymerization initiator, the producing efficiency is improved. The grafting reaction is effected by feeding the melted polyolefin containing either one of said radical-polymerizable monomer and the radical-polymerization initiator to the other. When said radical-polymerizable monomer is an unsaturated carboxylic anhydride, said unsaturated carboxylic anhydride as a starting material is preliminarily heated at 50.degree. to 250.degree. C., and then fed to the grafting reaction mentioned above. When the monomer is an unsaturated carboxylic acid or an acid anhydride of such an unsaturated carboxylic acid, an organic peroxide of a formula (I) is used as the radical-polymerization initiator. ##STR1## In this formula (I), two substituting groups connected directly to the benzene ring have an ortho-positional relationship or a meta-positional relationship, R.sub.1, R.sub.2, R.sub.3, R.sub.

Abstract: A glass fiber reinforced polymer which excels in mechanical properties and is suitable for use in a large-sized structural members, formed from a dispersion liquid by dispersing reinforcement glass fibers and particulate thermoplastic resin in a surfactant-containing aqueous medium in which bubbles of air are dispersed, forming a sheet-like web on a porous support plate, and applying heat and pressure to form a sheet. The reinforcement glass fibers include a silane coupling agent while the matrix resin has functional groups bonded to the silane coupling agent. The concentration of said functional groups is higher in the regions adjacent the surfaces of said reinforcement glass fibers than in regions farther removed therefrom, and said concentration progressively decreases in the direction away from said reinforcement glass fibers.

Abstract: The improved resin composition comprises:(A) a melt-workable liquid-crystal polyester resin obtained by polymerizing components selected from the group consisting of a dicarboxylic acid represented by the general formula (a) HOOC--R.sub.1 --COOH, a diol represented by the general formula (b) HO--R.sup.2 --OH, and an oxycarboxylic acid represented by the general formula (c) HO--R.sup.3 --COOH;(B) a polycarbonate resin having a recurring unit represented by the general formula: ##STR1## (C) a polyolefin and/or an olefinic copolymer, and the polyolefin and/or olefinic copolymer (C) is contained in an amount of 1-15 parts by weight per 100 parts by weight of a resin consisting of 95-5 wt % of the liquid-crystal polyester resin (A) and 5-95 wt % of the polycarbonate resin(B). This resin composition is balanced between various physical properties including moldability, heat resistance, impact resistance, dimensional stability and stiffness.

Abstract: Thermoplastic resin compositions comprising polyarylate and polyamide resins as main components, and an epoxy resin of the following formula [1] in a predetermined amount are provided. ##STR1## The thermoplastic resin compositions of the invention have good impact strength along with good heat and solvent resistances and good moldability.

Abstract: The improved process for preparing para-hydroxybenzoic acid comprises reacting potassium phenol with carbon dioxide in an inert reaction medium or without using a reaction medium in the presence of at least one compound selected from the group consisting of the compounds represented by the following general formula I or II: ##STR1## at a reaction temperature of 230.degree.-450.degree. C. and at a carbon dioxide pressure ranging from atmospheric pressure to 6 kg/cm.sup.2 (G). The process may comprise two stages and the first-stage reaction described above is followed by the second stage in which the reaction is further continued with the pressure of carbon dioxide in the system being reduced and/or the reaction temperature being elevated within the range specified above.Also, phenol may be used as the starting material instead of potassium phenolate.

Abstract: Para-hydroxybenzoic acid is prepared by reacting an alkali metal salt of phenol except the lithium and sodium salts with carbon dioxide in the presence of at least one compound selected from compounds of the following formulae (I) and (II): ##STR1## In formulae (I) and (II), M is an alkali metal except lithium and sodium; R is any substituent except an aliphatic hydroxy group having up to 4 carbon atoms, an aliphatic mercapto group having up to 4 carbon atoms, a substituent having at least one of them as its structural unit, and a hydrogen atom; R' is any substituent except an aliphatic hydroxy group having up to 4 carbon atoms, an aliphatic mercapto group having up to 4 carbon atoms, and a substituent having at least one of them as its structural unit; in formula (I) n is an integer of 1 to 5, and R groups may be the same or different when n is more than one; in formula (II) m is an integer of 1 to 5 and l is an integer of 0 to 4, and M alkali metals may be the same or different when m is one or more, and R'

Abstract: A resin composition for a composite-type vibration-damping material which comprises a saturated copolyester having a weight average molecular weight of at least 10,000 and a softening point of 50.degree. to 150.degree. C. and a polyfunctional isocyanate compound as a cross-linking agent and which, when cross-linked, has a degree of gelation (degree of cross-linking) of at least 10% and a composite-type vibration-damping material produced by use of the resin composition, have excellent adhesive strength and formability.When the resin composition is admixed with a conductive substance, a vibration-damping material produced by use of the admixture has excellent spot-weldability in addition to the above-mentioned excellent properties.

Abstract: Provided herein are an aromatic polyester having superior physical properties which is composed of the following units ##STR1## an aromatic polyester amide formed by introducing a prescribed amount of amide linkage into said aromatic polyester; filament thereof; and a composition formed by adding an inorganic filler or magnetic powder to said polymers.

Abstract: Thermoplastic resin compositions comprising polyarylate and polyamide resins as main components, polyethylene terephthalate and an epoxy resin of the following formula [1] in a predetermined amount are provided. ##STR1##The thermoplastic resin compositions of the invention have good impact strength along with good heat and solvent resistances and good moldability.

Abstract: An improved polyarylate resin is provided, which resin comprises the following units (I) to (IV) ##STR1## the units (I) being contained in an amount of from 3 to 30 mole %, the units (II) being contained in amount of not less than 30 mole %, the units (III) being contained in an amount of not less than 30 mole %, and the units (IV) being contained in an amount of not larger than 25 mole %, each based on the total moles of the units (I) to (IV). The polyarylate resin has good mechanical strength, heat resistance, resistance to color change, transparency, moldability and flame retardancy. A resin composition comprising the polyarylate resin, a polyamide and an epoxy resin is also provided.

Abstract: An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.

Abstract: An aromatic polyester consisting of 40-70 mol % of unit I derived from p-hydroxybenzoic acid, 1-8 mol % of unit II derived from m-hydroxybenzoic acid or isophthalic acid, 6-36 mol % of units III and IV derived from terephthalic acid and 2,6-naphthalene dicarboxylic acid, respectively, and 10-40 mol % of unit V derived from a symmetrical dihydroxy compound can be melt molded at a temperature of up to 330.degree. C. into an article having improved mechanical and thermal properties. An aromatic polyesteramide consisting of components I to V and unit VI having an anilino group is also provided. A filled composition is obtained by blending the polyester or polyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the polyester or polyesteramide with a magnetic powder.

Abstract: Copolyesteramides consisting of specific units can be injection molded at a low temperature into a part having a high heat distortion temperature. A filled composition is obtained by blending the copolyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the copolyesteramide with an magnetic powder.The copolyesteramide consists essentially of units <I>, <II>, <III>, <IV>, and <V> of the following formulae: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently at least one divalent radical selected from the group consisting of para-phenylene, 2,6-naphthalene, and 4,4'-biphenylene,R.sup.5 is a para- or meta-phenylene radical,X.sup.1 is --NH--,X.sup.

Abstract: Metal oxides having a very narrow pore size distribution of micropores within the range of between 10 and 100 Angstroms can be prepared by reacting a water-soluble basic salt of a metal hydrate with an organic compound such as an acid halide in a specific manner. The pore diameter of the metal oxide can be arbitrarily controlled within the range of micropore size by changing the molecular chain length of an organic compound, treating with an acid or calcinating at a different temperature. It is desirable that the narrow pore size distribution is centered within the range of 1.about.30 Angstroms, preferably 1.about.15 Angstroms when the metal oxide is used as a catalyst carrier.

Abstract: Contacting a mixture of hydrogen, carbon monoxide and/or carbon dioxide with an intimate mixture of a carbon monoxide and/or carbon dioxide reducing catalyst such as a Fischer-Tropsch catalyst, and a catalyst carrier comprising a metal oxide having a very narrow pore size distribution in the micropores within the range of between 10 and 100 Angstroms, to produce hydrocarbon mixtures useful in the manufacture of gasoline kerosene and light oil.

Abstract: A process is described for converting glycol dialkyl ether without substantial formation of olefin oligomers by reaction with water, comprising reacting a feed glycol di-tertiary alkyl ether represented by structural formula (A) with water using a strongly acidic cation-exchange resin as a catalyst and a reaction temperature of from 40.degree. C. to 150.degree. C. under a pressure of from 1 to 70 kg/cm.sup.2 (absolute pressure) in a molar ratio of water/feed glycol di-tertiary alkyl ether represented by the structural formula (A) of from 0.

Abstract: Thermoplastic resin compositions comprising polyarylate and polyamide resins as main components, polyethylene terephthalate and an epoxy resin of the following formula [1] in a predetermined amount are provided. ##STR1##The thermoplastic resin compositions of the invention have good impact strength along with good heat and solvent resistances and good moldability.