摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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 0.8 mole of an aliphatic diamine and 2 to 20 moles of an aromatic monohydroxy compound under heat, and thereafter (2) polycondensing the resulting reaction mixture under heat with an amount, sufficient to distill substantially all of the aromatic monohydroxy compound from the reaction system, of a diol compound or a mixture of the diol compound and an aliphatic diamine until substantially all of the aromatic monohydroxy compound is distilled out of the reaction system.
摘要:
A laminated film structure composed of a polyester film and an electroconductive metal layer laminated to at least one surface of the polyester resin film, characterized in that said polyester film is an unstretched film of a cured aromatic polyester having a crosslinking degree of not less than 70%, a swelling degree of not more than 30 and an elongation at room temperature of not less than 10%; and a process for producing said film structure.
摘要:
A layered silicate characterized by being ion-exchanged with an organic onium ion at 50-100% of its ion-exchange capacity, and by having a specific surface area of 2.5-100 m2/g, as well as a resin composition comprising a thermoplastic resin and the aforementioned layered silicate, the resin composition being characterized in that the layered silicate content is 0.01-20 parts by weight as inorganic ash with respect to 100 parts by weight of the thermoplastic resin, and the average number of layers of the layered silicate in the thermoplastic resin is 2-8 layers. Also, a film which comprises the resin composition.
摘要:
The invention provides a porous film having a plurality of connected pores, and a process for its production. The porous film of the invention is a porous film formed from highly heat resistant poly(metaphenylene isophthalamide), and having specific ranges for the open areas and difference between them on both surfaces, as well as specified ranges for the mean pore sizes and porosity on both surfaces. The permeability and impregnation with respect to substances such as air and water, as well as the dynamic strength, are therefore excellent, and the porous film can be used for filters, and for curing resin-impregnated prepregs, multilayer wiring boards, electronic package substrates and the like employing the porous film as a core material.
摘要:
There is provided a film comprising a layered silicate cation-exchanged with an organic cation and a polyester or polycarbonate. The organic cation is represented by the following formula (I): (R)n-L+ (I) wherein R is a group represented by the following formula (I-1): wherein R1 is a divalent hydrocarbon group having 5 to 20 carbon atoms, and R2 is a divalent hydrocarbon group having 1 to 20 carbon atoms, an alkyl group, an aryl group or an aralkyl group, L+ is an ammonium ion, a phosphonium ion or a hetero aromatic ion, and n is an integer of 1 to 4, with the proviso that when L+ is an ammonium ion or a phosphonium ion, n is 4 and four Rs may be the same or different. This film has the layered silicate highly dispersed therein and is excellent in various properties such as mechanical properties and dimensional stability.
摘要:
The present invention relates to a hydrogenated styrene polymer that has excellent transparency, can be used suitably for an optical application such as an optical disk substrate, has stability and transparency in a hot and humid environment, and has excellent heat resistance; and a process for producing same; etc. The hydrogenated styrene polymer of the present invention has a hydrogenated polymerized styrene unit content of at least 70 wt %, a content of fine particulate foreign matter having a particle size of 0.2 &mgr;m or more and less than 0.5 &mgr;m of at most 1×106 per g of the hydrogenated styrene polymer, and a phosphorus atom content of at most 0.01 parts by weight in 100 parts by weight of the hydrogenated styrene polymer. Furthermore, the process for producing a hydrogenated styrene polymer of the present invention includes steps of filtering, with a filter having a pore size of 0.3 &mgr;m or less, a hydrogenated styrene polymer having a hydrogenated polymerized styrene unit content of at least 70 wt %, at a temperature at which the solution viscosity thereof is at most 10 Pa·sec (100 poise) at a shear rate of 1 (1/s), and then removing a solvent from the filtrate thus obtained.
摘要:
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.