摘要:
A polyester resin composition which is a resin composition comprising a polyester and a laminar silicate that is 60-100% modified by organic phosphonium ion, wherein the content of the laminar silicate is 0.01-20 wt % as inorganic ash and the terminal OH group content is 0.1-45 eq/ton, as well as a process for its production and molded articles comprising it.
摘要:
A method for crystallizing a low molecular weight aromatic polycarbonate effectively and a method for preparing a polycarbonate resin having a desired intrinsic viscosity by using the polycarbonate crystallized with the above method of crystallization. A low molecular weight aromatic polycarbonate (preferably, the one produced by melt polycondensation) is crystallized by bringing it into contact with an aromatic monohydroxy compound or a mixture of said compound and water. Or, a low molecular weight aromatic polycarbonate is melt mixed with at least one or more kinds of compounds selected from the group consisting of aromatic monohydroxy compounds, carbonic acid diester compounds and aromatic dihydroxy compounds to crystallize the low molecular weight aromatic polycarbonate. The crystallized product is heated at a temperature lower than its melting point under reduced pressure or in an inert gas flow to convert it into a high polymerized state. Thus, a polycarbonate resin having a desired intrinsic viscosity is prepared.
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:
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:
There is provided a polyester composition which can be suitably used as a molding material for fibers, films or resins having an enhanced elastic modulus and softening points. The thermoplastic resin composition comprises 100 parts by weight of a thermoplastic resin (A) and 0.01-10 parts by weight of a fibrous aluminum oxide filler (B) composed of a compound represented by the following formula (I): AlxOyHz (I) (where x, y and z are numbers of 0-3, and x=(2y−z)/3 is satisfied), wherein the primary particles of the fibrous aluminum oxide filler have a mean fiber length of 10-1000 nm, a mean fiber diameter of 0.5-7 nm and a mean aspect ratio of 2000-5. The fibrous aluminum oxide filler (B) is preferably surface-coated with a silane coupling agent.
摘要:
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.
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:
To provide a resin composition which is suitable for use as a material for optical parts and disk substrates and molded products thereof. The resin composition comprises: (1) 10 to 90 wt % of a first hydrogenated, polymerized styrene which contains a hydrogenated, polymerized styrene unit in an amount of more than 95 wt % and 99.99 wt % or less and has a weight average molecular weight of 30,000 to 300,000; and (2) 10 to 90 wt % of a second hydrogenated, polymerized styrene which contains a hydrogenated, polymerized styrene unit in an amount of 60 to 95 wt % and has a weight average molecular weight of 30,000 to 200,000, “wt %” being based on 100 wt % of the total of the first hydrogenated, polymerized styrene and the second hydrogenated, polymerized styrene.
摘要:
A film which is a single polymer film and has a smaller phase difference as the wavelength becomes shorter. This film is made from an olefin-based polymer which has an alicyclic group in the side chain, such as hydrogenated polystyrene, the amount of the alicyclic group in the side chain being 60 to 90 wt % based on the whole polymer, and satisfies the following expression: R(450)/R(550)
摘要:
A thermoplastic resin composition having transparency and antistatic properties, comprising 100 parts by weight of a thermoplastic resin (A) having a refractive index of 1.52 to 1.61 and a haze of 40 or less, and 5 to 40 parts by weight of a polyetherester (B) which has a sulfonate group and a polyalkylene oxide group, and is substantially immiscible with the thermoplastic resin (A), the difference in refractive index between the thermoplastic resin (A) and the polyetherester (B) being 0.04 or less. The thermoplastic resin composition has a haze of 40% or less and a surface resistivity of 1.times.10.sup.10 to 1.times.10.sup.14 ohm/square.