Abstract:
The present invention relates to a thermoplastic resin composition which contains a thermoplastic polymer (A) containing a glutaric anhydride-containing component shown in the following general formula (1), where R and R are the same or different and each represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and a rubber-containing polymer compound (B), and satisfies the following conditions of (I) and/or (II), (I) a total light transmittance per 2 mm of the thickness of the thermoplastic resin composition is more than 90%, (II) a weight-average molecular weight of a thermoplastic polymer (A) is from 30,000 to 150,000 and a glass transition temperature is at least 130 DEG C. According to the present invention, a thermoplastic composition having high heat resistance, superior mechanical properties, colorless transparency, optical isotropy and moldability, as well as solvent resistance, is provided.
Abstract:
Disclosed is a flame-retardant liquid crystal polyester composition, which comprises (A) 100 wt. parts of a liquid crystal polyester comprising structural units of the following formulae (I), (II), (III) and (IV), in which the amount of units (I) and (II) is 77 to 95 mole% based on the sum of units (I), (II) and (III), the amount of units (III) is 23 to 5 mole% based on the sum of units (I), (II) and (III), and the units (I)/units (II) molar ratio is 75/25 - 95/5 and (B) 0.5 to 30 wt. parts of a polymeric flame retardant having an average dispersed particle diameter not larger than 2.5 mu m: &lparstr& O-R1-O &rparstr& (II), &lparstr& OCH2CH2-O &rparstr& (III), and &lparstr& CO-R2-CO &rparstr& (IV) wherein R1 and R2 are specific aromatic residues. This composition gives a molded article having a superior flame retardancy, heat resistance, mechanical properties, and appearance.
Abstract:
A composite particulate material for resin reinforcement which comprises an inorganic particulate material (A) and an elastic polymer (B) having a glass transition temperature of -10.degree.C or below and also having functional groups capable of forming chemical bonds with resins to be reinforced, said components (A) and (B) accounting for 50-99 wt% and 50-1 wt%, respectively, of their total amount. A process for producing said composite particulate material. A reinforced resin composition incorporated with said composite particulate material. The resin composition yields molded articles which are improved in mutually contradicting properties (that is, impact strength vs. stiffness and elongation at break vs. heat resistance) and which have mechanical properties with less anisotropy. It offers good characteristic properties which are hardly attained by conventional engineering plastic materials.
Abstract:
Provided is a polyamide resin composition comprising a melt blend of (A) a polyamide resin, (B) a phyllosilicate, and (C) an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, in which the phyllosilicate (B) has a reactive functional group bonded thereto and is such that the exchangeable metal ions existing in the interlayers are ion-exchanged with organic onium ions. The composition has a reduced inorganic ash content and has both high stiffness and high ductility. Optionally, the composition contains an inorganic filler apart from the phyllosilicate, an impact modifier, and a flame retardant, still having high stiffness and high ductility.
Abstract:
Disclosed is a flame-retardant liquid crystal polyester composition, which comprises (A) 100 wt. parts of a liquid crystal polyester comprising structural units of the following formulae (I), (II), (III) and (IV), in which the amount of units (I) and (II) is 77 to 95 mole% based on the sum of units (I), (II) and (III), the amount of units (III) is 23 to 5 mole% based on the sum of units (I), (II) and (III), and the units (I)/units (II) molar ratio is 75/25 - 95/5 and (B) 0.5 to 30 wt. parts of a polymeric flame retardant having an average dispersed particle diameter not larger than 2.5 mu m: &lparstr& O-R1-O &rparstr& (II), &lparstr& OCH2CH2-O &rparstr& (III), and &lparstr& CO-R2-CO &rparstr& (IV) wherein R1 and R2 are specific aromatic residues. This composition gives a molded article having a superior flame retardancy, heat resistance, mechanical properties, and appearance.
Abstract:
A polyamide resin composition which is obtained by melt-kneading (A) a polyamide resin, (B) a phyllosilicate, and (C) either an olefin compound having a carboxylic acid anhydride group in the molecule or a polymer of the olefin compound, wherein the phyllosilicate (B) is one in which exchangeable metal ions present between layers thereof have undergone ion exchange with an organic onium salt and which has reactive functional groups bonded thereto. The composition combines high rigidity with stretchability even when it has a low ash content. It may optionally contain an inorganic filler other than the phyllosilicate, an impact modifier, and a flame retardant. In this case also, the composition retains rigidity and stretchability.
Abstract:
A composite particulate material for resin reinforcement comprises an inorganic particulate material (A) and an elastic polymer (B) having a glass transition temperature of -10°C or below and also having functional groups capable of forming chemical bonds with a resin to be reinforced. The components (A) and (B) account for 50-99 wt% and 50-1 wt%, respectively, of their total amount. The polymer (B) is prepared in presence of (A). This composite material can be used as a reinforcement for thermoplastic polymer(s).
Abstract:
A thermoplastic polymer containing glutaric anhydride units of the following general formula (1) and having an absorbance at awavelength of 280 nm of at most 0.5 (the absorbance is a value of the polymer film having a thickness of 100 mu m, measured with a UV-visible spectrophotometer) and a glass transition temperature of not lower than 130 DEG C has high-level colorless transparency and good heat resistance, moldability and dwell stability. wherein R and R are the same or different and each represents a hydrogen atom or an alkyl group having from 1 to 5 carbon atoms.