Abstract: A film to be laminated on a metal, which is formed of a polycarbonate resin having a high concentration of terminal hydroxyl groups or a composition comprising said resin and a polyester resin or a film to be laminated on a metal, which is formed by laminating the above film and a polyester film. The film is excellent in adhesion to a metal plate, moldability, heat resistance, retort resistance, odor retention property, impact resistance dent resistance and processability into a can, such as drawing fabrication, ironing fabrication or the like for producing metal cans.

Abstract: A liquid crystal film comprising a light-transmitting resin matrix and liquid crystal droplets dispersed therein, characterized in that(a) an average droplet diameter R (micrometers) of the liquid crystal droplets is 1 to 2.5 micrometers,(b) a thickness d (micrometers) of the liquid crystal film is 5 to 50 micrometers,(c) an applied voltage V.sub.0.7 (V) is less than 0.8 d when light transmittance is 70%,(d) a driving voltage V.sub.90 (V) in d=10 micrometers and an average droplet diameter R (micrometers) of the liquid crystal droplets meet the following relationshipV.sub.90 >1 (R-1.8).sup.2 +4,(e) saturated light transmittance (T.sub.100) in d=10 micrometers is at least 80% and light transmittance (T.sub.7V) in applying a voltage of 7 V is at least 90% of T.sub.100. Said liquid crystal film can be utilized in a liquid crystal display device.

Abstract: An aromatic polyester:(1) consisting essentially of a polymer unit A of the formula (1), ##STR1## a polymer unit B of the formula (2), ##STR2## and a polymer unit C of the formula (3), ##STR3## the above polymer units being bonded together forming ester linkages in a polymer chain,(2) the polymer unit C being contained in an amount of 10 to 35 mol % based of the total amount of the polymer units B and C,(3) the polyester being semicrystalline,(4) the polyester having an inherent viscosity, measured in a phenol/1,1,2,2-tetrachloroethane mixed solvent (weight ratio=60/40) at 35.degree. C., of at least 0.3; a process for its production; and a resin composition containing it.

Abstract: A poly(arylene ether ketone) of this invention principally comprises recurring units represented by formula ##STR1## wherein Ar.sup.1 denotes a 1,5-naphthalene ring, a 2,6-naphthalene ring, a 2,7-naphthalene ring or a combination of them, and Ar.sup.2 denotes p-phenylene, p,p'-biphenylene, a 1,5-naphthalene ring, a 2,6-naphthalene ring, a 2,7-naphthalene ring or a combination of them.The poly(arylene ether ketone) is high in second-order transition temperature and excellent in solvent resistance and moldability, and can be molded into heat-resistant fibers and electric insulating films.

Abstract: A process for the production of a fiber-reinforced composite material, which comprises the steps of(1) preparing a polymeric composition containing a substantially linear aromatic oligomer having a terminal aliphatic hydroxyl group, bis(acylcaprolactam) and a catalyst which promotes a ring opening-addition reaction of a hydroxyl group and a caprolactam ring,(2) melting the polymeric composition and impregnating it into a fibrous reinforcing material to form a impregnated product, and(3) heating the impregnated product up to a temperature sufficient to open the caprolactam ring while inhibiting elimination of caprolactam thereby to form, as a matrix resin, a thermoplastic copolymer having an ester group and an amide group in its main chain;and a fiber-reinforced composition material produced by the above-mentioned process.

Abstract: A crystalline wholly aromatic polyester:(1) which consists essentially ofa polymer unit A of the formula ##STR1## a polymer unit B of the formula ##STR2## a polymer unit C of the formula ##STR3## these polymer units being bonded together to form an ester having a linkage (--COO--),(2) which has a melting point lower than that of the known crystalline wholly aromatic polyester having same composition; a process for the production of a crystalline wholly aromatic polyester, using a phenol or phenol derivative as a reaction medium; a reinforced resin composition comprising the above wholly aromatic polyester; and a shaped or molded article formed from the above resin composition.

Abstract: A novel poly(N-cyclic iminoether) compound and a process for production thereof which comprises (a) reacting a polyisocyanate compound with a haloalkyleneamine or (b) reacting a polyamine with an alkyl isocyanate, and then (c) cyclizing the resulting polyurea compound. Several thermosetting compositions containing the novel poly(N-cyclic iminoether) and thermoset resins therefrom are also proposed.

Abstract: The arylene sulfide ketone copolymers according to the present invention have mainly recurring units which are represented by formulas (I) and (II), ##STR1## The arylene sulfide ketone copolymers have a high glass transition point and excellent moldability and can be produced with industrial advantage.

Abstract: A process for producing a thermoset resin, which comprises reacting (A) a poly(cyclic iminoether), (B) an ethylenically unsaturated compound having a functional group reactive with the poly(cyclic iminoether), and (C) an ethylenically unsaturated monomer having no functional group reactive with the poly(cyclic iminoether), in the presence of an acid catalyst and a radical catalyst. Instead of the compound (B), there may be used the compound (D), i.e. a compound having at least two equivalents of at least one group selected from the class consisting of carboxyl, hydroxyl, amino, epoxy and carboxylic anhydride groups in the molecule and being free from an ethylenically unsaturated bond. The present application provides also a thermosetting composition and a thermoset resin.

Abstract: The invention relates to a resin composition comprising 100 parts by weight polyamide 4.6 resin and 2 to 200 parts by weight of a polyamide amide resin.The composition has improved HDT in wet state and improved impact resistance in dry state.

Abstract: An electrochromic resin composition comprising (A) 100 parts by weight of a network comprising a crosslinked polymer containing 4,4'-diaminodiphenylmethane units in a form in which the amino groups in the formula are quaternized, and (B) 5 to 150 parts by weight of an electrolytic material uniformly dispersed in the network (A). The crosslinked polymer containing the units with the amino groups therein being in the quaternized state is useful as an electrochromic or photochromic material.

Abstract: A polyamideimide having an inherent viscosity of above 0.48 which comprises a unit of the following formula (II) ##STR1## and a unit of the following formula (IV) ##STR2## as main units forming the molecular chains of the polyamideimide, and an intimate mixture of the polyamideimide and a plasticising material for the polyamideimide.

Abstract: A process for producing a thermoset resin, which comprises reacting (A) an organic compound containing at least two groups selected from the class consisting of alcoholic hydroxyl groups, aromatic amino groups and aromatic aminomethyl groups, and (B) a poly(cyclic iminoether) in the presence of (C) a compound acting as an acid catalyst, at an elevated temperature.

Abstract: A process for producing a thermoset resin, which comprises reacting (A) an organic compound containing at least two groups selected from the class consisting of alcoholic hydroxyl groups, aromatic amino groups and aromatic aminomethyl groups, and (B) a poly(cyclic iminoether) in the presence of (C) a compound acting as an acid catalyst, at an elevated temperature.

Abstract: A polyamideimide having an inherent viscosity of above 0.48 which comprises a unit of the following formula (II) ##STR1## and a unit of the following formula (IV) ##STR2## as main units forming the molecular chains of the polyamideimide, and an intimate mixture of the polyamideimide and a plasticizing material for the polyamideimide.

Abstract: A process for producing a shaped article of polyamide which comprises (1) melt-shaping an intimate mixture of 100 parts by weight of a polyamide having hexamethylene terephthalamide as main recurring units and 20 to 500 parts by weight of an aromatic hydroxy compound, and then (2) removing the aromatic hydroxy compound from the resulting shaped article by extraction.

Abstract: A fiber having a porous coating of a thermoplastic resin, whereinat least a part of the surface of the fiber is coated with the porous coating of the thermoplastic resin, andthe thermoplastic resin of the coating(A) is different from a material forming the matrix of the fiber,(B) is present in a proportion of 5 to 100% by weight based on the fiber matrix, and(C) is porous such that a group of micropores having a pore diameter in the range of 0.1 to 1 micrometer are present in a volume of 100 to 500 mm.sup.3 /g; and a bundle of fibers bonded to one another having at least a part of the coating in common. This bundle is useful as a prepreg for a fiber-reinforced composite material.

Abstract: Melt-moldable crystalline polyester-imides comprising units of the following formula (IA) ##STR1## wherein R represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or a halogen atom, and n is an integer of 2 to 12, as main recurring units. The polyester-imides are prepared by (1) condensing a starting mixture containing 1 mole of an imidodicarboxylic acid and 2 to 12 moles of an aromatic monohydroxy compound under heat while distilling water out of the reaction system or (1)' condensing a starting mixture comprising 1 mole of trimellitic anhydride, 0.5 to 0.

Abstract: A novel, substantially linear aromatic polyester comprising 6,6'-(ethylenedioxy)di-2-naphthoic acid as a main acid component and an aliphatic glycol having 2 to 10 carbon atoms in the main chain of the glycol as a main glycol component. The aromatic polyester is prepared by condensing an ethylene glycol diester of 6,6'-(ethylenedioxy)di-2-naphthoic acid, or a mixture of a major proportion of said naphthoate with a dicarboxylic acid, a diol, a hydroxycarboxylic acid or an ester-forming derivative thereof, at an elevated temperature. The aromatic polyester has excellent mechanical properties such as strength and Young's modulus.

Abstract: A process for producing a film-like or fibrous structure of an aromatic polyester, which comprises(1) forming an unstretched film-like or fibrous structure by melt-shaping a blend comprising 100 parts by weight of (A) an aromatic polyester having a high degree of polymerization derived from an aromatic dicarboxylic acid as a main acid component and an aliphatic diol and/or an alicyclic diol as a main glycol component and (B) 3 to 300 parts by weight of a low-molecular-weight compound being substantially non-reactive with the aromatic polyester (A) and having a boiling point of at least about 200.degree. C.