124results about How to "Excellent retardancy" patented technology

Polyester compositions that provide a higher throughput in calendering processes may be prepared from a polyester having crystallization half time of at least 5 minutes, an inherent viscosity of about 0.55 to about 0.75 dL/g, a branching monomer, and a release additive. The polyester compositions show a combination of excellent melt strength with good shear response that permits higher calendering line speeds before melt fracture occurs. Also disclosed are processes for film or sheet by calendering the above compositions and the film or sheet produced therefrom. The polyester compositions, film, or sheet also may include plasticizers and/or flame retardants to increase their flexibility and enable their use in commercial applications requiring flame resistance. The film and sheet have excellent appearance and can be used in a wide range of decorative and packaging applications.

A member for electronic device includes polylactic acid and polycarbonate. The member for electronic device is made not from fossil resource, but mainly from a carbon-neutral material, and exhibits excellent impact resistance and heat resistance.

It is an object of the present invention, with respect to a phenol aralkyl type epoxy resin, to suppress any crystal precipitation, improve the quality manageability and operation efficiency at composition production and enhance the properties, including heat resistance, thereof. It is also intended to provide a resin composition that even when stored in the form of a varnish for a prolonged period of time, is resistant to crystal precipitation, excelling in storage stability and operation efficiency, and that gives a hardening product of low dielectric constant and low dielectric tangent excelling in heat resistance, water resistance and flame retardance.

There is provided an epoxy resin characterized by comprising a phenol aralkyl type epoxy resin in which a content (an area % measured by gel permeation chromatography) of a bifunctional compound is 20% or less, and provided a resin composition obtained therefrom.

Disclosed herein is a flame retardant thermoplastic resin composition that has superior scratch resistance and mechanical properties, satisfying requirements for the appearance of housing materials resulting from a recent increase in volume of electrical and electronic products, and that contains a phosphorus-based flame-retarding agent, satisfying requirements for fire safety and prevention of environmental problems. The resin composition with scratch resistance comprises a base resin comprising (A) about 30 to about 90 parts by weight of a polycarbonate resin, (B) about 15 to about 50 parts by weight of a polymethylmethacrylate resin and (C) about 5 to about 50 parts by weight of a polyethylene terephthalate-based resin, and (D) about 5 to about 30 parts by weight of a phosphorus-based flame-retarding agent based on 100 parts by weight of the base resin. The composition may further comprise about 1 to about 30 parts by weight of an impact modifier based on 100 parts by weight of the base resin.

The present invention provides a halogen-free, flame retardant adhesive composition that exhibits excellent anti-migration properties, not only within single layer structures, but also within multilayer structures of much higher density such as copper-clad laminates.

The flame retardant adhesive composition according to the present invention comprises: (A) a halogen-free epoxy resin, (B) a carboxyl group-containing acrylic resin and/or a carboxyl group-containing acrylonitrile-butadiene rubber, (C) a curing agent, (E) specific phosphinate and/or diphosphonate compounds, and (F) an ion scavenger and/or a heavy metal deactivator.

The present invention relates to a flame retardant polycarbonate thermoplastic resin composition that comprises a polycarbonate resin, a rubber modified vinyl-grafted copolymer, a phosphorous mixture of a cyclic phosphazene oligomer compound and a phosphate ester morpholide compound as a flame retardant, and a fluorinated polyolefin resin, which has good flame retardancy, heat resistance, mechanical strength, impact strength, heat stability, processability, and appearance.

The present invention relates to a process for preparing an extruded polystyrene resin foam board having excellent flame retardancy and recyclability, which comprises extruding and foaming a foamable composition, the foamable composition containing a polystyrene resin, a blowing agent and a specific flame retardant including a phosphate ester and a brominated bisphenol ether compound represented by the formula shown in the specification, and to a polystyrene resin foam board having excellent flame retardancy, environmental compatibility and recyclability.

A process for producing a flexible polyurethane foam, which comprises reacting a polyol mixture with a polyisocyanate compound in the presence of a urethane-forming catalyst and a blowing agent, characterized in that the polyol mixture comprises the following polyol (A) and the polyol (B), and the proportion of the polyisocyanate compound to the polyol mixture is at least 90 by isocyanate index, and the total amount of Zn and Co contained in the polyol mixture is from 0.1 to 200 ppm.

A composite resin molded article produced by impregnating cloth made from long fibers of a liquid crystal polymer with a curable resin composition which comprises a polymer (A) and a curing agent (B), the polymer (A) having a weight average molecular weight of 10,000 to 250,000 and containing 5 to 60 mol % of a carboxyl group or a carboxylic anhydride group; a method for manufacturing the composite resin molded article; a cured product produced by curing the composite resin molded article; a laminate made by laminating a substrate having a conductive layer (I) on the surface and an electrical insulating layer made of the cured product; a method for manufacturing the laminate; a multilayer circuit board comprising the laminate and a conductive layer (II) formed on an electrical insulating layer of the laminate; a method for manufacturing the circuit board; and an electronic device having the multilayer circuit board are provided. The composite resin molded article and the cured product thereof have excellent flame retardancy, electric insulation properties, and crack resistance, and generates only a very small amount of toxic substances during incineration. The laminate and multilayer circuit board have a low thermal expansion and a high modulus of elasticity. The conductive layer (II) exhibits high adhesion to a smooth electrical insulating layer, even if conductive layer (II) is formed on the electrical insulating layer by a deposition method and thus possesses high reliability. The multilayer circuit board has excellent electrical properties, and therefore can be used suitably as a substrate for a semiconductor device such as a CPU and memory, as well as other surface-mounted components in electronic devices.

A flame retardant epoxy resin composition comprises a phosphorus atom-containing flame retardant polyester resin in addition to essential components of an epoxy resin and a curing agent. The phosphorus atom-containing flame retardant polyester resin is obtained by a condensation reaction or a polycondensation reaction of a reactive phosphorus-containing compound represented by the structural formula (I). By use of the phosphorus atom-containing flame retardant polyester resin as a halogen-free flame retardant, it is possible to achieve flame retardancy, reduce an amount of poisonous gas emitted when ignited, and improve moldability. In addition, a cured product of this epoxy resin composition is excellent in heat resistance, water resistance, chemical resistance, solder resistance, moisture resistance and tracking resistance as well as the flame retardancy.

A method comprising at least (a) a step of preparing a silane master batch by melt-kneading, to 100 parts by mass of a base resin (R_B) containing a non-aromatic organic oil and ethylene rubber, an organic peroxide of from 0.01 to 0.6 parts by mass, an inorganic filler of from 10 to 400 parts by mass, and a silane coupling agent of from 1 to 15.0 parts by mass, at a temperature equal to or higher than the decomposition temperature of the organic peroxide; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.

The present invention provides a halogen-free, flame retardant adhesive composition that exhibits excellent anti-migration properties, not only within single layer structures, but also within multilayer structures of much higher density. The flame retardant adhesive composition according to the present invention comprises: (A) a halogen-free epoxy resin, (B) a carboxyl group-containing acrylic resin and/or a carboxyl group-containing acrylonitrile-butadiene rubber, (C) a curing agent, (E) a specific polyphosphoric acid-melamine-based compound salt and/or polyphosphoric acid-diamine compound salt, and (F) an ion scavenger and/or a heavy metal deactivator.

A transparent member for electronic device includes: polylactic acid, polymethyl(meth)acrylate, and a flame retardant, the transparent member having an Izod impact strength of 2.7-5 kJ/m² and a light transmittance at 400 nm-760 nm wavelength region of 40% or more. The transparent member for electronic device is made not from fossil resource, but mainly from a carbon-neutral material, and exhibits excellent flame retardancy, impact resistance and transparency.

A flameproof thermoplastic resin composition can include (A) about 5 to about 40% by weight of an epoxy group-containing rubber modified aromatic vinyl copolymer resin, (B) about 30 to about 90% by weight of a polycarbonate resin, (C) about 1 to about 50% by weight of a polyester resin and (D) about 5 to about 30 parts by weight of a phosphorus-containing flame retardant, per 100 parts by weight of a base resin comprising (A), (B) and (C).

The present invention provides an additive for a non-aqueous electrolytic solution including a phosphazene derivative which is solid at 25° C. and represented by the following formula (1): (PNR2)n formula (1) wherein R represents a monovalent substituent or a halogen atom; and n represents a number of 3 to 6. More particularly, the present invention provides a non-aqueous electrolytic solution secondary cell and a non-aqueous electrolytic solution electric double layer capacitor which contain the additive for the non-aqueous electrolytic solution, which have excellent self-extinguishability or flame retardancy, and resistance to deterioration, and which have low internal resistance and excellent conductivity due to low viscosity of the non-aqueous electrolytic solution.

A thermoplastic polycarbonate resin composition which can have excellent light stability and flame retardancy includes about 100 parts by weight of a polycarbonate base resin (A); about 0.1 to about 5 parts by weight of a polyorganosiloxane-containing graft copolymer (B); about 5 to about 50 parts by weight of titanium dioxide (C); and about 0.1 to about 5 parts by weight of a fluorinated polyolefin-based resin (D). The thermoplastic polycarbonate resin composition may further include about 5 to about 50 parts by weight of a filler (E).

The present invention relates to a composition containing as a main component, an epoxy resin which has a structure comprising a polyaryleneoxy structure such as polynaphthylene oxide as a main skeleton, (methyl)glycidyloxy group and aralkyl group being introduced on an aromatic ring of the polyaryleneoxy structure, and which has low viscosity, according to the present invention, there can be provided an epoxy resin composition which can impart remarkably excellent flame retardancy and dielectric characteristics to a cured article and a cured article thereof, an epoxy resin, a phenol resin as an intermediate of the epoxy resin, and a method for producing the epoxy resin.

The present invention provides a phosphoric and acrylic copolymer resin that can have good transparency, scratch resistance and flame retardancy and a composition including the same. The phosphoric and acrylic copolymer resin includes repeat units of (A-1) at least one vinyl monomer and (A-2) at least one phosphoric monomer.

The flame retardant polycarbonate resin composition of the present invention includes (A) a polycarbonate resin, (B) a rubber-modified vinyl-based graft copolymer, (C) a metal salt of sulfonic acid, and (D) an anti-drip agent including a fluorinated terpolymer. The polycarbonate resin composition of the present invention can have excellent flame retardancy, heat resistance, and mechanical strength, well-balanced mechanical properties such as impact resistance, heat resistance, and fine workability, and an excellent appearance characteristic. Therefore, it can be useful for fabrication of molded products such as electric household appliances, office appliances, electrical and electronic devices, and internal parts thereof.

Disclosed is a phosphazene compound and a photosensitive resin composition. The phosphazene compound is obtained by reacting a phenoxyphosphazene compound (A-1) having a phenolic hydroxyl group and/or a cross-linked phenoxyphosphazene compound (A-2) obtained by cross-linking the phenoxyphosphazene compound (A-1) with an epoxy compound (B) having an unsaturated double bond and/or an isocyanate compound (C), wherein the phosphazene compound has an unsaturated double bond in its molecule. The photosensitive resin composition includes at least: a soluble polyimide resin (G-1) having a carboxyl group and/or a hydroxyl group and is soluble in an organic solvent, as the polyimide resins (G); and a phenoxyphosphazene compound (H-1) having a phenolic hydroxyl group and/or a cross-linked phenoxyphosphazene compound (H-2), which is obtained by cross-linking the phenoxyphosphazene compound (H-1) and has at least one phenolic hydroxyl group, as the phosphazene compound (H), and the photosensitive resin composition further includes a (meth)acrylic compound (L).

A flame-retardant thermoplastic resin composition that can have excellent color tone according to the present invention comprises a base resin comprising (A) about 50 to about 99% by weight of a rubber modified aromatic vinyl resin; and (B) about 1 to about 50% by weight of an acryl resin; and further comprising (C) about 1 to about 30 parts by weight of a bromodiphenyl ethane mixture, based on about 100 parts by weight of the base resin comprising (A) and (B); and (D) about 1 to about 10 parts by weight of an antimony oxide, based on about 100 parts by weight of the base resin comprising (A) and (B). The resin composition of the present invention can have improved physical properties and color properties as well as flame resistance.

A flameproof thermoplastic resin composition comprises (A) 100 parts by weight of a thermoplastic resin; (B) about 1 to about 40 parts by weight of a sublimational filler; and (C) about 1 to about 30 parts by weight of a flame retardant. The thermoplastic resin composition can solve the problems of high specific gravity and deterioration of flame retardancy caused by adding a conventional filler.

Provided is a film or sheet composed of a resin composition that includes a poly lactic acid (A), an acidic functional group-modified olefinic polymer (B) including an acidic functional group and having an acid value of 10 to 70 mg KOH/g and a weight average molecular weight of 10,000 to 80,000, a tetrafluoroethylene polymer (C), and an aromatic cyclic phosphazene-containing flame retardant (D) including a compound of General Formula (I) and in which the aromatic cyclic phosphazene-containing flame retardant (D) is included in an amount of 10 to 70 parts by weight based on 100 parts by weight of the poly lactic acid (A), and a method for manufacturing the film or sheet by melt film formation. Each sign in Formula is as described in the specification.