46results about How to "Excellent balance of physical properties" patented technology

Disclosed herein is a scratch-resistant flameproof thermoplastic resin composition, the resin composition comprising a base resin including (A) about 50 to about 90% by weight of a polycarbonate resin; (B) about 1 to about 50% by weight of a methacrylic copolymer resin with a refractive index of about 1.495 to about 1.590; and (C) about 0 to about 49% by weight of a (meth)acrylic resin, and (D) about 5 to about 40 parts by weight of a flame retardant, based on about 100 parts by weight of the base resin comprising (A)+(B)+(C). The resin composition of the present invention can have good flame retardancy, scratch resistance, colorability, and good appearance due to its improved compatibility. The resin composition of the invention can be used to produce plastic molded articles which can exhibit better physical properties than products produced using conventional resin compositions.

A resin composition having good scratch resistance includes about 5 to about 50 parts by weight of core-shell graft resin (A) and about 95 to about 50 parts by weight of resin (B) which includes about 40 to about 100% by weight of (meth)acrylic acid alkyl ester. The outer shell of the core-shell graft resin (A) comprises (meth)acrylic acid alkyl ester.

The present invention relates to a polycarbonate-polysiloxane copolymer containing a polysiloxane unit. The polycarbonate-polysiloxane copolymer of the present invention includes an aliphatic terminal having a specific carbon number, thereby having excellent impact properties at low temperature, and high transparency.

A thermoplastic resin composition which comprises a thermoplastic resin (a) and a block copolymer (b) comprising a methacrylic polymer block (A) and an acrylic polymer block (B).

The invention discloses a rubber particle discontinuous phase and transparent rubber modified styrene resin compound, which is characterized by the following: forming rubber particle discontinuous phase with rubber copolymer; comprising 10-50 rubber particle discontinuous phase and 90-50 wt base blending copolymer; setting the rubber particle discontinuous phase as 20-80 wt core layer copolymer and 80-20 wt shell layer copolymer; setting the core layer copolymer as 5-50 wt styrene monomer and 95-50 wt diene monomer; setting the shell layer copolymer as 10-70 wt styrene monomer and 90-30 wt (metyl group) acrylic ester monomer; setting the base blending copolymer as 20-80 wt polymethyl methacryate resin and 80-20 wt styrene-acrylonitrile copolymer resin; setting the grain diameter of the core layer copolymer at 100-1000nm. This product possesses good transparency, shockproof property and chemical medicine resistance property.

Disclosed is a thermoplastic resin composition which comprises: an aromatic polycarbonate resin (component A) (which may comprise an aromatic polycarbonate resin (component A1) and a thermoplastic resin other than an aromatic polycarbonate resin (component A2)); a granulated talc (component B) which comprises a talc having an average particle diameter of 0.1 to 10 [mu]m, wherein the talc is so granulated as to have a bulk density of 0.4 to 1.5 g/ml; a rubbery polymer (component C, an optional component); a flame retardant (component E, an optional component); and a fluorinated polyolefin (component F, an optional component); wherein the granulated talk (component B) has such a grain size that the ratio of granules trapped on a 500 [mu]m-mesh sieve is 55% by weight or more. Also disclosed is a resin molded article formed by molding the thermoplastic resin composition. The thermoplastic resin composition and the resin molded article are excellent in extrusion moldability, stiffness, flame retardancy, impact resistance and thermal stability and show excellent balance among physical properties.

The invention discloses a preparing method of rubber toughening styrene transparent pitch compound, which is characterized by the following: forming rubber particle discontinuous phase with 50-90 wt copolymer continuous phase and 50-10 wt rubber-like polymer; mixing; getting the product; setting the rubber particle discontinuous phase as 20-80 wt core layer copolymer and 80-20 wt shell layer copolymer; proceeding suspension polymerization with 30-60 wt styrene monomer, 20-60 wt (metyl group) acrylic ester monomer, 5-30 wt acrylic nitrile or methacrylonitrile monomer; getting the copolymer continuous phase. This pitch possesses better transparency, shockproof property and chemical medicine resistance property.

A cross-linked polyphosphonate and a thermoplastic resin composition including the cross-linked polyphosphonate are disclosed. The composition may have excellent flame retardancy and mechanical strength and superior appearance and heat resistance.

An object of the present invention is to provide a copolymer for a compatibilizer capable of increasing impact resistance strength, heat resistance and toughness without lowering fluidity. The copolymer for a compatibilizer contains polyamide resin and at least one resin selected from ABS resin, SAN resin, ASA resin, AES resin. A resin composition comprising 0.5 to 11 mass % of copolymer (A) for a polymer blend compatibilizer, 25 to 60 mass % of polyamide resin(B), and 29 to 74.5 mass % of resin (C) is formed. The resin (C) is at least one resin selected from ABS resin, SAN resin, ASA resin, and AES resin. The copolymer (A) for a polymer blend compatibilizer has 30 to 60 mass % of a maleimide-based monomer unit, 35 to 69 mass % of a styrene-based monomer unit, 1 to 5 mass % of unsaturated dicarboxylic anhydride monomer unit, and has a weight average molecular weight (Mw) of 60,000 to 125,000.

A method of making flame retardant expandable polystyrene-based polymerized beads includes: mixing (a) about 70 to about 95 wt % of a styrene monomer, (b) about 1 to about 10 wt % of a char-generating thermoplastic resin, and (c) about 4 to about 29 wt % of inorganic foam particles to prepare a dispersion; and polymerizing the dispersion. The method of the present invention can eliminate further processing steps, can exhibit excellent productivity, and can allow easy control of the size of the beads.

A multilayer structure comprising a conductor layer, an adhesive layer, and a polymer film layer interposed between the conductor layer and the adhesive layer. The multilayer structure can be used to provide a multilayer wiring board having excellent electrical properties and an excellent balance of physical properties, high heat resistance, a narrow pitch wiring pattern, a small-diameter via, uniform insulating layer thickness, an appropriately low coefficient of linear expansion, and stable adhesiveness between a metal and the polymer film. The polymer film layer may contain at least one repeating unit represented by formula (1) in the molecule. The present invention also provides a multilayer wiring board obtained from the multilayer structure.

The invention relates to a rubber modification methacrylate resin composition including a continuous phase formed by 60-85% by weight of copolymer (A) and a dispersion phase formed by 15-40% by weight of acrylate rubber grafted copolymer (B). The copolymer (A), base on the total of 100% by weight, comprises 2-27% of acrylonitrile-styrene copolymer (A1), 42-80% of methyl-acrylate polymer (A2), and 8-32% of styrene-unsaturated dicarboxylic anhydride copolymer (A3).

Disclosed herein is an impact modifier formed by graft polymerizing about 45 to about 70% by weight of a rubber polymer with about 30 to about 55% by weight of a methacrylate-based monomer, wherein said rubber polymer is prepared by polymerizing about 0.1 to about 1 part by weight of an antioxidant with about 100 parts by weight of a monomer mixture comprising about 30 to about 45% by weight of a diene-based monomer and about 55 to about 70% by weight of alkyl acrylate. The methacrylate-based resin composition of the present invention using the aforementioned impact modifier may have improved transparency, impact resistance and a good appearance.

Disclosed herein is a phosphorus compound represented by Formula 1:

The invention discloses a commercial vehicle full-surrounding turbulent flow cover, and the outer surfaces of the top, the left portion and the right portion of the spoiler cover are common surfaces;reinforcing ribs are arranged on the inner surfaces of the top, the left portion and the right portion of the spoiler cover, a plurality of fixed bases are evenly arranged on the inner surfaces of thetop, and the left portion and the right portion of the spoiler cover at intervals in advance, wherein screw holes are formed in the fixed bases in advance. The outer surface or the inner surface of the fixed base is covered with an n-shaped component, and the n-shaped component forms a hollow channel in the two side edges and the middle of the inner surfaces of the top, the left portion and the right portion of the spoiler cover. The top, the left portion, the right portion and the n-shaped component of the turbulent flow cover are made of DCPD materials. Because the DCPD resin is brand-new olefin cross-linked thermosetting resin taking dicyclopentadiene as a main raw material, the DCPD resin is a new material capable of producing large-sized or complex-shaped molded workpieces in an extremely short time. The high-pressure RIM machine is used for pouring the DCPD material, polymerization reaction is carried out in a mold for forming, the method is suitable for large-scale, medium-scale and small-scale wide-range production, and the requirements for energy saving, resource saving and the like are met.

The present invention provides a thermoplastic resin composition for a vehicular lamp housing, which is excellent in balance of physical properties with regard to such as impact resistance and fluidity, and of which hot plate weldability, vibration weldability and laser weldability are improved when a vehicular lamp housing is welded with other members.

A thermoplastic resin composition for a vehicular lamp housing, comprising a graft copolymer (A) and a (co)polymer (C) is provided, wherein

• • the graft copolymer (A) is obtained by emulsion graft polymerization of an acrylic acid ester-based rubbery polymer having a weight average particle diameter of 70 to 250 nm with at least one monomer selected from the group consisting of an aromatic vinyl-based monomer, a vinyl cyanide-based monomer, a (meth)acrylic acid ester-based monomer and a maleimide-based monomer, wherein the acrylic acid ester-based rubbery polymer is obtained by emulsion polymerization of 60 to 95% by weight of an acrylic acid ester-based monomer in the presence of 5 to 40% by weight of an aromatic vinyl-based polymer having a weight average particle diameter of 10 to 150 nm;
  • the (co)polymer (C) is obtained by polymerization of at least one monomer selected from the group consisting of an aromatic vinyl-based monomer, a vinyl cyanide-based monomer, a (meth)acrylic acid ester-based monomer and a maleimide-based monomer.

A polypropylene resin composition includes a base resin, a thermoplastic elastomer, and an inorganic filler. The base resin is a polypropylene-based mixed resin including a first resin, a second resin, a third resin, and a fourth resin. The first resin is a homopolypropylene resin. The second resin, the third resin, and the fourth resin are each a polypropylene-based block copolymer resin. A melt index of the second resin measured at a temperature of 230° C. and under a load of 2.16 kg is higher than a melt index of each of the third resin and the fourth resin measured under the same condition. A flexural modulus of the third resin measured in accordance with ASTM D790 is lower than a flexural modulus of the fourth resin measured under the same condition.