39results about How to "High retardancy" patented technology

Disclosed is a halogen-free, flame retardant thermoplastic resin composition based on polypropylene and one or more thermoplastic elastomers with an organic nitrogen- and/or phosphorus-based intumescent flame retardant comprising a piperazine component. The composition is processed easily to make a wire and cable sheath exhibiting a balance of high flame retardancy, good flexibility, high wet electrical resistance and excellent heat deformation properties, and which passes the VW-I flame retardancy test, the UL1581 heat deformation test at 150° C. and the wet electrical resistance test, and also exhibits good tensile and flexibility properties. Also disclosed is a wire and cable sheath made from the composition.

Disclosed is a resin composition including a thermoplastic resin (A), a glass fiber (B) having a ratio of the major axis to the minor axis of the fiber cross section of 1.5 to 10 and a flame retardant (C), wherein the mass ratio (A/B) of the thermoplastic resin (A) to the glass fiber (B) is 30/70 to 95/5, and a part or the whole of the thermoplastic resin (A) is composed of a polyamide 11 resin (A1a) or/and a polyamide 1010 resin (A1b); and the resin composition includes 10 parts by mass or more of the polyamide 11 resin (A1a) or/and the polyamide 1010 resin (A1b) and 5 to 40 parts by mass of the flame retardant (C) in relation to 100 parts by mass of the total amount of the thermoplastic resin (A) and the glass fiber (B).

An object of the present invention is to provide a thermosetting resin composition having high heat resistance, high flame retardancy, good mechanical properties, and high dimensional stability. To achieve the object, there are provided a thermosetting resin composition containing a polyimide resin and a boron compound represented by general formula below and a cured product of the thermosetting resin composition.

(R₁'s each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. R₂'s each independently represent hydrogen, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Y represents a nitrogen-containing heterocyclic compound. R₃'s each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms. Z represents a nitrogen-containing heterocyclic compound.)

The present invention relates to a polyphosphate-containing halogen-free adhesive, primarily used as an adhesive. The composition comprising the polyphosphate group compounds which effectively meets the needs for environmental protection and flame retardancy, and the high flexibility and flame retardancy of the adhesive made it suitable for using on printed circuit board, especially the flexible printed circuit board.

The invention provides a flame retardant resin composition containing a polyalkylene furan dicarboxylate represented by the following formula (1), an aromatic polycarbonate, a phosphazene compound represented by the following formula (2) and a fluorine-containing compound:

wherein m and n₁ are each an integer of 2 or more;

wherein n₂ is an integer of 2 or more, and R1 and R2 are each an alkyl group having 1 to 20 carbon atoms or an aryl group.

A reinforced thermoplastic resin composition including: a polycarbonate resin (A); a graft copolymer (B) obtained by polymerizing a monomer mixture including an aromatic alkenyl compound monomer (a) and a vinyl cyanide compound monomer (b) in the presence of a rubbery polymer (B1); a glass fiber (D) which is surface-treated with a water-soluble polyurethane and which has a ratio between a major axis and a minor axis in a fiber cross section of at least 2; a glycidyl ether unit-containing polymer (E) which includes a glycidyl ether unit and has a mass average molecular weight of 3,800 to 60,000; a phosphoric acid ester-based flame retardant (F1) having a mass average molecular weight of 300 to 430; a phosphoric acid ester-based flame retardant (F2) having a mass average molecular weight of 550 to 692; and a sulfonic acid metal salt (G), wherein a content ratio of the component (A) is from 93 to 99% by mass and a content ratio of the component (B) is from 1 to 7% by mass with respect to a total mass of 100% by mass of the component (A) and the component (B); a content ratio of the component (D) is from 30 to 50% by mass with respect to a total mass of 100% by mass of the component (A), the component (B), the component (D), the component (E), the component (F1), the component (F2) and the component (G); and with respect to a total of 100 parts by mass of the component (A) and the component (B), a content of the component (E) is from 1 to 10 parts by mass, a content of the component (F1) is from 0.5 to 5 parts by mass, a content of the component (F2) is from 19.5 to 25 parts by mass, a total of the contents of the component (F1) and the component (F2) is from 21 to 29 parts by mass, and a content of the component (G) is from 0.03 to 0.5 parts by mass.

Disclosed herein is a flame retardant and impact modifier represented by the following Chemical Formula 1. The flame retardant and impact modifier may improve heat resistance and flowability as well as flame retardancy and impact strength of a thermoplastic resin composition. The present invention also provides a method of preparing the foregoing flame retardant and impact modifier and a thermoplastic resin composition including the flame retardant and impact modifier.

It is an object to provide a prepreg for a printed laminate that has a low thermal expansion coefficient in the planar direction, excellent drillability, and further excellent heat resistance and flame retardancy, and a laminate and a metal foil-clad laminate. A resin composition according to the present invention includes a molybdenum compound (A); an epoxy resin (B); a curing agent (C); and an inorganic filler (D), wherein a Mohs hardness of the inorganic filler (D) is 3.5 or more, and a content of the inorganic filler (D) is 40 to 600 parts by mass based on 100 parts by mass of a total of resin solid components.

A flame-retardant flexible polymer composition includes a polymer component that contains 98 to 80 parts by mass of a chlorinated polyethylene and 2 to 20 parts by mass of a polyolefin polymer; and calcium hydroxide particles having a surface containing calcium silicate, wherein a content of the particles relative to 100 parts by mass of the polymer component is 5 parts by mass or more and 20 parts by mass or less. A polymer tube is formed from the flame-retardant flexible polymer composition. An insulated wire includes an insulation formed from the flame-retardant flexible polymer composition.

Provided is a resin composition for heat-resistant electrical wires which has high heat resistance and flame retardancy and combines excellent heat aging resistance and compatibility with PVC. The resin composition for heat-resistant electrical wires is configured of 100 parts by weight of base resin ingredients and 5-20 parts by weight of a phosphorus-based flame retardant, the base resin ingredients comprising 30-55 parts by weight of a polymer having a glass transition temperature or melting point of 180° C. or higher, 15-49 parts by weight of a polyolefin, and 21-30 parts by weight of a styrene-based elastomer ingredient, the styrene-based elastomer ingredient having a content of the styrene unit represented by chemical formula (I) of 30% by weight or less.

Provided is a resin composition, including: a polycarbonate resin; a biomass resin having a hydroxy group; a rubber having a siloxane bond and having a functional group reactive with a hydroxy group; a flame retardant; and a drip preventing agent, in which: when a total of all the components is defined as 100 mass %, contents of the components are: biomass resin having a hydroxy group: 5 mass % or more to 25 mass % or less, the rubber having a siloxane bond and having a functional group reactive with a hydroxy group: 1 mass % or more to 9 mass % or less, the flame retardant: 3 mass % or more to 20 mass % or less, and the drip preventing agent: 0.1 mass % or more to 5 mass % or less; and a mass ratio of the biomass resin having a hydroxy group to the polycarbonate resin is 0.35 or less.