KR102547327B1 - Acrylate-styrene-acrylonitrile based resin composition, article comprising the same and method for manufacturing the article - Google Patents

Abstract

The present invention relates to an ASA-based resin composition, a molded article containing the same, and a method for manufacturing the molded article, and more particularly, an acrylate-aromatic vinyl compound-vinyl cyan compound graph having an acrylate rubber having an average particle diameter of 50 to 150 nm as a core ASA-based resin composition comprising 20 to 47% by weight of a poly(alkyl methacrylate) resin, 20 to 47% by weight of an alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer, and 23 to 55% by weight of a poly(alkyl methacrylate) resin, It relates to a molded article comprising the same and a method for manufacturing the molded article.
According to the present invention, an ASA-based resin composition that can be applied to high value-added products having excellent mechanical properties and processability, especially excellent colorability and transparency even at a certain thickness or more, such as uncoated, transparent, high chroma or special color, There is an effect of providing a manufacturing method of molded articles and molded articles containing.

Description

ASA-based resin composition, molded article containing the same, and manufacturing method of the molded article

The present invention relates to an ASA-based resin composition, a molded article containing the same, and a method for manufacturing the molded article, and more particularly, has excellent mechanical properties and processability, and in particular, excellent colorability and transparency even at a certain processing thickness or more, so that it can be unpainted, transparent, and highly chromatic. Or, it relates to an ASA-based resin composition applicable to high value-added products having properties such as special colors, a molded article including the same, and a manufacturing method of the molded article.

Acrylate compound-styrene-acrylonitrile copolymer (hereinafter referred to as 'ASA resin') does not contain unstable double bonds in the polymer and has excellent weather resistance, so it is used in electrical and electronic parts, construction materials (vinyl siding, etc.), extrusion It is widely applied to various fields such as profiles and automobile parts.

However, recently, in the field of outdoor products, market demand for high value-added products with properties such as uncoated, transparent, high chroma, and special colors is continuously increasing, but overcoming the inherent limitations of ASA resin itself in colorability and transparency. However, there is a need to develop an ASA resin that can meet market demands.

Korean Patent Publication No. 2009-0095764

In order to solve the problems of the prior art as described above, the present invention is a high value-added product having excellent mechanical properties and processability, especially excellent colorability and transparency even at a certain thickness or more, such as unpainted, transparent, high chroma or special color. An object of the present invention is to provide an ASA-based resin composition applicable to, a molded article comprising the same, and a method for manufacturing the molded article.

The above and other objects of the present invention can all be achieved by the present invention described below.

In order to achieve the above object, the present invention is 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, an alkyl methacrylate- An ASA-based resin composition comprising 23 to 55% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer and 25 to 45% by weight of a poly(alkyl methacrylate) resin and a molded article including the same are provided.

In addition, the present invention is 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, an alkyl methacrylate-aromatic vinyl compound-vinyl cyan preparing pellets by kneading and extruding 23 to 55% by weight of a compound copolymer and 25 to 45% by weight of a poly(alkyl methacrylate) resin at 200 to 300 ° C. and 100 to 500 rpm; and sheet molding or injection molding of the prepared pellets at a molding temperature of 200 to 300 ° C. to produce a molded article.

According to the present invention, an ASA-based resin composition that can be applied to high value-added products having properties such as unpainted, transparent, high chroma or special color, having excellent mechanical properties and processability, and excellent colorability and transparency even at a certain thickness or more, including the same There is an effect of providing a molded article to do and a manufacturing method of the molded article.

Hereinafter, the ASA-based resin composition of the present description, a molded article including the same, and a method for manufacturing the molded article will be described in detail.

The present inventors found an ASA-based resin comprising an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer, an alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer, and a poly(alkyl methacrylate) resin in a predetermined content ratio. In the case of the composition, it was confirmed that the mechanical properties and processability were equal to or higher than those of the conventional ASA-based resin composition, while maintaining excellent colorability and transparency at a processing thickness of 0.5 T or more, and based on this, further research was conducted to complete the present invention. It became.

The ASA-based resin composition of the present invention contains 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, an alkyl methacrylate-aromatic vinyl compound - 23 to 55% by weight of a vinyl cyan compound copolymer and 25 to 45% by weight of a poly(alkyl methacrylate) resin. Within this range, it has excellent mechanical properties and processability, and in particular, excellent colorability and transparency even at a certain thickness or more, which can be applied to high value-added products having properties such as uncoated, transparent, high chroma, or special color.

Hereinafter, each component constituting the thermoplastic resin composition of the present substrate will be described in detail.

A) Acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer

A) the acrylate rubber of the graft copolymer of the present description may have an average particle diameter of, for example, 50 to 150 nm, preferably 60 to 140 nm, more preferably 70 to 140 nm, and even more preferably 80 to 150 nm. It is 140 nm, and within this range, excellent weather resistance, colorability, impact strength and surface gloss characteristics can be imparted to the finally prepared thermoplastic resin composition.

In the present description, the average particle diameter can be measured using dynamic light scattering, and in detail, it can be measured as an intensity value in Gaussian mode using Nicomp 380 equipment (manufacturer: PSS).

The A) graft copolymer is, for example, 20 to 47% by weight, preferably 20 to 40% by weight, more preferably 20 to 35% by weight, still more preferably 20 to 30% by weight, within this range mechanical It has an excellent balance between strength and fluidity, and has excellent effects in transparency, colorability, and weatherability in particular.

The A) graft copolymer may include, for example, 40 to 60% by weight of acrylate rubber, 25 to 45% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyan compound, and within this range, weather resistance and fluidity , has excellent effects on tensile strength and impact strength.

In a preferred embodiment, the A) graft copolymer may include 45 to 55% by weight of acrylate rubber, 30 to 50% by weight of an aromatic vinyl compound, and 5 to 20% by weight of a vinyl cyan compound, and within this range, weather resistance, It has excellent fluidity, tensile strength and impact strength.

As a more preferred example, the A) graft copolymer may include 45 to 55% by weight of acrylate rubber, 30 to 40% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyan compound, within this range the weather resistance , fluidity, tensile strength and impact strength are excellent.

In the present description, a polymer comprising a certain compound means a polymer polymerized including the compound, and a unit in the polymerized polymer is derived from the compound.

The acrylate may be, for example, at least one selected from the group consisting of alkyl acrylates having 2 to 8 carbon atoms in an alkyl group, preferably alkyl acrylates having 4 to 8 carbon atoms in an alkyl group, and more preferably butyl acryl rate or ethylhexyl acrylate.

The aromatic vinyl compound may be, for example, at least one selected from the group consisting of styrene, α-methylstyrene, m-methylstyrene, p-methylstyrene, and p-tert-butylstyrene, and is preferably styrene.

For example, the vinyl cyanide compound may be at least one selected from the group consisting of acrylonitrile, metanitrolonitrile, ethylacrylonitrile, and isopropylacrylonitrile, and is preferably acrylonitrile.

The A) graft copolymer may have, for example, a gel content of less than 90% by weight, 30 to 90% by weight, preferably 50 to 90% by weight, and mechanical properties such as impact strength and flexural strength within the above range It is excellent and has an effect of improving weather resistance.

The A) graft copolymer may have, for example, a swelling index of 6 to 14, 6 to 12, preferably 6 to 10, and within the above range, mechanical properties such as impact strength and flexural strength are excellent while weather resistance is improved has the effect of

The A) graft copolymer may have, for example, a graft ratio of 20 to 80%, 25 to 60%, and preferably 25 to 40%, and within the above range, it has excellent mechanical properties such as impact strength and flexural strength, and weather resistance This has an improving effect.

The gel content and swelling index of the present substrate were determined by adding acetone to 1 g of the graft copolymer powder, stirring at room temperature for 24 hr, centrifuging, collecting only the portion insoluble in acetone, and measuring the weight before and after drying to obtain the following The gel content and swelling index can be measured by the formula.

* Gel content (%) = [weight after centrifugation and drying/weight of sample] * 100

* Swelling index = weight after centrifugation before drying / weight after drying after centrifugation

The graft rate of the present description is obtained by coagulating, washing, and drying the resin latex of the graft polymer to obtain a powder form, putting 2 g of this powder in 300 ml of acetone, stirring for 24 hours, and then separating the solution using an ultracentrifuge After that, the separated acetone solution is dropped into methanol to obtain a non-grafted portion, which is dried and weighed. From these weights, the graft rate is calculated according to the following formula.

* Graft rate (%) = (weight of grafted monomer (g) / weight of rubber (g)) x 100

The A) graft copolymer may be prepared by, for example, emulsion polymerization, and the emulsion polymerization is not particularly limited in the case of emulsion polymerization commonly carried out in the art to which the present invention belongs, but an aromatic vinyl monomer and an alkyl acrylate rubber It can be prepared by emulsion graft polymerization of vinyl cyan monomer.

The alkyl acrylate rubber included in the A) graft copolymer may be prepared by, for example, emulsion polymerization of an alkyl acrylate, and specific examples include alkyl acrylate, an emulsifier, an initiator, a graft agent, a crosslinking agent, an electrolyte, and water. It can be prepared by adding emulsion polymerization.

The emulsifier is preferably, for example, an alkylsulfosuccinic acid metal salt derivative having a pH of 3 to 9 and a carbon number of 12 to 18 in an aqueous solution, or an alkyl sulfate ester having 12 to 20 carbon atoms or a sulfonic acid metal salt derivative thereof.

As a specific example, the alkylsulfosuccinic acid metal salt derivative having a pH of 3 to 9 and 12 to 18 carbon atoms is dicyclohexylsulfosuccinic acid sodium salt, dihexylsulfosuccinic acid sodium salt, di-2-ethylhexylsulfosuccinic acid sodium salt, di- 2-Ethylhexylsulfosuccinic acid potassium salt or di-2-ethylhexylsulfosuccinic acid lithium salt is preferred, and alkyl sulfate esters having 12 to 20 carbon atoms or sulfonic acid metal salt derivatives thereof include sodium lauric sulfate, sodium dodecyl sulfate, and sodium dodecyl sulfate. It is preferably sylbenzene sulfate, sodium octadecyl sulfate, sodium oleic sulfate, potassium dodecyl sulfate or potassium octadecyl sulfate.

The amount of the emulsifier is preferably 0.1 to 1 part by weight based on 100 parts by weight of the total alkyl acrylate rubber.

The initiator is preferably an inorganic or organic peroxide, for example, and specifically, it is preferably a water-soluble initiator such as potassium persulfate, sodium persulfate, or ammonium persulfate, or a fat-soluble initiator such as cumene hydroperoxide or benzoyl peroxide. .

The amount of the initiator used is preferably 0.05 to 0.2 parts by weight based on 100 parts by weight of the total alkyl acrylate rubber.

In the present description, the total weight of 100 parts by weight of the alkyl acrylate rubber may be the weight of the prepared alkyl acrylate rubber itself or the total weight of monomers added during polymerization and preparation thereof.

For example, the graft agent is preferably at least one selected from the group consisting of allyl methacrylate, triallyl isocyanurate, triallylamine and diallylamine, and the amount thereof is based on 100 parts by weight of the alkyl acrylate rubber 0.01 to 0.07 parts by weight is preferred, and within this range it is more advantageous to achieve the object of the present invention.

The crosslinking agent is, for example, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, 1,3-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, neo At least one selected from the group consisting of pentyl glycol dimethacrylate, trimethylolpropane trimethacrylate and trimethylolmethane triacrylate is preferred, and the amount used is 0.02 to 0.3 based on 100 parts by weight of the alkyl acrylate rubber. Part by weight is preferred.

By using the grafting agent and the crosslinking agent, elasticity of the alkyl acrylate rubber according to the present invention can be further increased and physical properties such as impact strength can be further improved.

The electrolyte is preferably at least one selected from the group consisting of NaHCO ₃ , Na ₂ S ₂ O ₇ and K ₂ CO ₃ , and the amount used is preferably 0.05 to 0.4 parts by weight based on 100 parts by weight of the alkyl acrylate rubber. .

The water serves as a medium in which emulsion polymerization proceeds, and it is preferable that it is ion-exchanged water, and the amount thereof may be appropriately selected according to need.

The components used in the production of the alkyl acrylate rubber are, for example, continuously introduced or fed into a reactor by a combination of continuous and batch input and emulsified using polymerization conditions generally known in the art to which the present invention belongs. Alkyl acrylate rubber can be produced by polymerization. Also, the obtained alkyl acrylate rubber may be in the form of a latex.

The pH of the alkyl acrylate rubber is, for example, preferably 5 to 9 in a latex state immediately after completion of polymerization, more preferably 6 to 8, and excellent effects such as latex stability are obtained within this range.

In the present description, pH can be measured using a pH meter.

The A) graft copolymer is a graft copolymer in which an aromatic vinyl compound-vinyl cyan compound copolymer is grafted onto the alkyl acrylate rubber polymer backbone. It can be prepared by emulsion polymerization by mixing with a cyanide compound and, if necessary, a polymerization additive.

The polymerization additive may include, for example, a grafting agent and/or a crosslinking agent, and the grafting agent and crosslinking agent are the same as the grafting agent and crosslinking agent used in the production of the above-described alkyl acrylate rubber in terms of type, and the amount used is rubber It can be used within the same weight part range based on 100 parts by weight of the total monomers excluding.

In the present description, monomers include alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and vinyl cyan compounds.

Emulsion polymerization of the A) graft copolymer is carried out by adding an emulsifier, a polymerization initiator, a molecular weight regulator, water, etc. commonly used in the art to which the present invention belongs, depending on the purpose, in addition to the alkyl acrylate rubber, aromatic vinyl compound and vinyl cyan compound. can be used In addition, the graft copolymer prepared immediately after emulsion polymerization may be in the form of latex.

The emulsifier is preferably a carboxylic acid metal salt derivative such as a metal salt of a fatty acid having a pH of 9 to 13 and having 12 to 20 carbon atoms and a metal salt of rosin acid, for example.

The fatty acid metal salt having 12 to 20 carbon atoms is preferably at least one selected from the group consisting of fatty acid sodium, sodium laurylate, sodium oleate, and potassium oleate, for example, and the metal salt of rosin acid having 12 to 20 carbon atoms is, for example, rosin acid Sodium, potassium rosinate or mixtures thereof are preferred.

The amount of the emulsifier is preferably used in an amount within the range of 1 to 2 parts by weight based on a total of 100 parts by weight of the total of the alkyl acrylate rubber, the aromatic vinyl compound and the vinyl cyan compound, which are the reaction mixture.

The initiator may be the same type of initiator as the type of initiator that can be used in the production of the alkyl acrylate rubber, for example, and the amount of the initiator is preferably 0.05 to 0.3 parts by weight based on 100 parts by weight of the total reaction mixture. .

The molecular weight modifier may be, for example, t-dodecylmercaptan, n-octylmercaptan, or a mixture thereof, and the amount used is preferably 0.02 to 0.2 parts by weight based on 100 parts by weight of the reaction mixture.

The water is preferably ion-exchanged water, and may be used in a weight generally used in the technical field to which the present invention belongs.

During the emulsion graft polymerization, when the polymerization additives such as the reaction mixture and the emulsifier are added together, the pH of the polymerization system temporarily rises, making grafting difficult and reducing the stability of the copolymer particles, resulting in non-uniform particle internal structure. In preparing the graft copolymer A) by graft polymerization, it is preferable to continuously add the reaction mixture and polymerization additives, specifically, for 1 to 10 hours or 1 to 5 hours within the total reaction time.

It is obvious to those skilled in the art that polymerization conditions not described in the present description can be appropriately selected from polymerization conditions generally known in the art to which the present invention pertains.

In the present description, continuous input refers to continuous input for a certain period of time or step-by-step input within a fixed period of time, as opposed to batch input.

The A) graft copolymer, for example, preferably has a pH of 8 to 11 in a latex state immediately after completion of polymerization, and more preferably has a pH of 9 to 10.5, and in this range, the stability of the latex is excellent. .

The A) graft copolymer latex is agglomerated at 80 to 90 ° C or 82 to 88 ° C and normal pressure using an aqueous calcium chloride solution, and aged at more than 90 ° C to 100 ° C or 92 to 98 ° C to dehydrate and After washing, it may be prepared in powder form by drying for 20 minutes to 1 hour, or 30 minutes to 40 minutes with hot air at 85 to 95 ° C. or 88 to 92 ° C.

B) Alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer

The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer of the present description is preferably 23 to 55% by weight, more preferably 25 to 50% by weight, based on the total weight of the ASA-based resin composition (A+B+C). % by weight, more preferably 25 to 45% by weight, even more preferably 30 to 40% by weight, and within this range, excellent transparency and colorability are obtained.

The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer preferably comprises 40 to 90 wt% of an alkyl methacrylate, 9 to 40 wt% of an aromatic vinyl compound, and 1 to 20 wt% of a vinyl cyan compound. more preferably 50 to 85% by weight of an alkyl methacrylate, 12 to 35% by weight of an aromatic vinyl compound, and 3 to 15% by weight of a vinyl cyan compound, more preferably 55% by weight of an alkyl methacrylate to 65% by weight, 25 to 35% by weight of an aromatic vinyl compound, and 5 to 10% by weight of a vinyl cyan compound, and has excellent transparency and colorability within this range.

The alkyl methacrylate may be, for example, an alkyl methacrylate having 1 to 15 carbon atoms in an alkyl group, and specific examples include methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylbutyl methacrylate, 2 -May be at least one selected from the group consisting of ethylhexyl methacrylate and lauryl methacrylate, preferably an alkyl methacrylate containing a chain alkyl group having 1 to 4 carbon atoms, more preferably methyl methacrylate It may be a acrylate.

The aromatic vinyl compound may be, for example, at least one selected from the group consisting of styrene, α-methylstyrene, m-methylstyrene, p-methylstyrene, and p-tert-butylstyrene, and is preferably styrene.

For example, the vinyl cyanide compound may be at least one selected from the group consisting of acrylonitrile, metanitrolonitrile, ethylacrylonitrile, and isopropylacrylonitrile, and is preferably acrylonitrile.

The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may preferably have a weight average molecular weight of 10,000 to 150,000 g/mol, more preferably 40,000 to 120,000 g/mol, within which the rubber is dispersed. It has the advantages of excellent impact strength, processability, transparency and colorability by increasing the degree.

In this description, unless otherwise defined, the weight average molecular weight is dissolved in acetone, and after dissolving the powder in acetone, extracting the dissolved part (sol) in acetone, dissolving it in a THF solution, and then using GPC to determine the standard PS (standard polystyrene) sample. It can be measured as a relative value.

The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may be prepared by, for example, solution polymerization, bulk polymerization, emulsion polymerization or suspension polymerization, and the solution polymerization, bulk polymerization, emulsion polymerization and suspension polymerization are respectively Emulsion polymerization and suspension polymerization methods commonly performed in the technical field to which the invention pertains are not particularly limited.

The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer is, in a preferred embodiment, an initiator and a molecular weight modifier in 100 parts by weight of a total of 100 parts by weight of an alkyl methacrylate, an aromatic vinyl compound, and a vinyl cyan compound in a solventless state or under a reaction solvent. 0.01 to 0.5 parts by weight, preferably 0.02 to 0.15 parts by weight, more preferably 0.02 to 0.1 parts by weight of one or more of them, respectively, and then mass polymerization or solution polymerization using a continuous reactor. It is economical and has a small residual impurity advantage.

The reaction solvent is not particularly limited if it is a reaction solvent commonly used in bulk polymerization or solution polymerization in the art to which the present invention belongs, and may be, for example, an aromatic hydrocarbon, preferably toluene, xylene, ethylbenzene, cumene And it may be at least one selected from the group consisting of tetralin, more preferably toluene.

The weight of the A) graft copolymer is preferably not greater than the weight of the B) alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer, more preferably the A) graft copolymer and B) The weight ratio (A:B) of the alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer may be 1:1 to 1:2.5, more preferably 1:1 to 1:2, within this range. It has an excellent balance of mechanical strength and fluidity in the interior, and in particular, has an effect of excellent transparency, colorability and weather resistance.

C) poly(alkyl methacrylate) resins

The C) poly(alkyl methacrylate) resin of the present disclosure may preferably be 25 to 45% by weight, more preferably 30 to 45% by weight, still more preferably 30 to 40% by weight, within this range the conventional Compared to the ASA-based resin composition, there is an advantage in that transparency and colorability are greatly improved while mechanical properties and processability are maintained at equal or higher levels.

The poly(alkyl methacrylate) resin may be, for example, a polymer including an alkyl methacrylate having 1 to 15 carbon atoms in an alkyl group.

The alkyl methacrylate is preferably selected from the group consisting of methyl methacrylate, ethyl methacrylate, butyl methacrylate, 2-ethylbutyl methacrylate, 2-ethylhexyl methacrylate and lauryl methacrylate It may be one or more, more preferably an alkyl methacrylate containing a chain alkyl group having 1 to 4 carbon atoms, and more preferably methyl methacrylate.

The poly(alkyl methacrylate) resin preferably has a weight average molecular weight of 50,000 to 200,000 g/mol, more preferably 50,000 to 150,000 g/mol, still more preferably 50,000 to 100,000 g/mol, within this range It has excellent weather resistance, excellent fluidity, tensile strength and impact strength, and excellent transparency and colorability.

The poly(alkyl methacrylate) resin may be prepared by, for example, bulk polymerization, solution polymerization, suspension polymerization, or emulsion polymerization after mixing a crosslinking agent and an initiator with a monomer containing alkyl methacrylate, preferably suspension polymerization. Or it is prepared by emulsion polymerization.

The initiator is not particularly limited if it is a conventional initiator used in the production of poly(alkyl methacrylate) resin, and for example, an azo-based initiator such as 2,2'-azobis 2'4-dimethyl-valeronitrile is preferred. can do.

Substances required for reaction such as solvents, emulsifiers, etc., which must be added or changed according to the polymerization method, or conditions such as polymerization temperature and polymerization time, are materials that are generally applied according to each polymerization method when producing poly(alkyl methacrylate) resin. In the case of or conditions, it is not particularly limited and may be appropriately selected as needed.

ASA-based resin composition

The ASA-based resin composition of the present disclosure may preferably have a total rubber content of 8 to 23% by weight, more preferably 10 to 20% by weight, even more preferably 10 to 17% by weight, even more preferably 10 to 10% by weight. to 15% by weight, and within this range, mechanical properties are excellent, and in particular, weather resistance, transparency and colorability are excellent.

In the present disclosure, ASA-based resin refers to an alkyl acrylate-aromatic vinyl compound-vinyl cyan compound copolymer.

The ASA-based resin composition is preferably a total of 100 acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer, alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer and poly(alkyl methacrylate) resin. It may include 0.05 to 5 parts by weight of at least one of a lubricant, a heat stabilizer, and an ultraviolet stabilizer based on parts by weight, and within this range, the advantage of well expressing these natural effects without deteriorating the physical properties of the ASA-based resin composition there is.

The lubricant may preferably be included in an amount of 0.3 parts by weight or more to less than 2 parts by weight, more preferably 0.5 to 1.9 parts by weight, and more preferably 0.9 to 1.5 parts by weight, within this range. has excellent effects on both impact strength and fluidity.

The lubricant may be, for example, at least one selected from the group consisting of ester-based lubricants, metal salt-based lubricants, carboxylic acid-based lubricants, hydrocarbon-based lubricants, and amide-based lubricants, preferably an amide-based lubricant, and more preferably Stellar. It is a mid-type lubricant, more preferably an alkylene bis (steramide) having 1 to 10 carbon atoms in the alkylene, in which case the natural effect of the lubricant is well expressed without deteriorating the mechanical properties and thermal stability of the resin There is an advantage.

In the present description, the stearamide-based lubricant may include stearamide and a stearamide substituent in which at least one of stearamide and its hydrogen is substituted with another substituent (eg, C1 to C10 alkyl, halogen, etc.).

The ester-based lubricants, metal salt-based lubricants, carboxylic acid-based lubricants, hydrocarbon-based lubricants, and amide-based lubricants are not particularly limited when each is a material commonly used as a corresponding type of lubricant in the art to which the present invention belongs.

The heat stabilizer is, for example, one or more selected from the group consisting of amine-based heat stabilizers and phosphorus-based heat stabilizers, each of which may be included within the range of 0.01 to 3 parts by weight, and within this range, heat stability, transparency and colorability are all excellent It works.

The amine-based heat stabilizer is, for example, N,N-di-t-butyl hydroxylamine (N,N-di-t-butyl hydroxylamine), N,N-distearyl hydroxylamine (N,N-distearyl hydroxylamine ; DSHA), N,N-diphenyl hydroxylamine (DPHA), N,N-dibenzyl hydroxylamine (N,N-dibenzyl hydroxylamine), N,N-benzylphenyl hydroxyl Amine (N,N-benzylphenyl hydroxylamine), N,N-di(2,4-dimethylphenyl) hydroxylamine (N,N-di(2,4-dimethylphenyl) hydroxylamine) and N,N-naphthyl hydroxyl It may be one or more selected from the group consisting of amines (N,N-naphthyl hydroxylamine), for example, may be included within the range of 0.01 to 3 parts by weight, preferably 0.05 to 2 parts by weight, more preferably 0.1 to 1 It may be included in the range of parts by weight, and within this range, there are excellent effects in thermal stability, transparency and colorability.

The phosphorus-based thermal stabilizer is, for example, tris (nonylphenyl) phosphite (tris (nonylphenyl) phosphite), tris (2,4-di-t-butylphenyl) phosphite (tris (2,4-di-t-butyl phenyl) ) phosphite; TBPP), 2,4,6-tri-tert-butylphenyl-2-butyl-2-ethyl-1,3-propanediol phosphite (2,4,6-tri-tert-butylphenyl-2- butyl-2-ethyl-1,3-propanediol phosphite), diisodecyl pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, bis (2,4- Di-t-butylphenyl) pentaerythritol diphosphite (bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite; PEP24), bis (2,4-di-cumylphenyl) pentaerythritol diphosphite ( bis (2,4-di-cumylphenyl) pentaerythritol diphosphite) and tetrakis (2,4-di-t-butylphenyl) [1,1-biphenyl] -4,4'-diyl bisphosphonite (tetrakis ( 2,4-di-tert-butylphenyl) [1,1-biphenyl] -4,4'-diyl bisphosphonite) may be one or more selected from the group consisting of, for example, may be included within the range of 0.01 to 3 parts by weight, , Preferably it may be included in the range of 0.05 to 2 parts by weight, more preferably 0.1 to 1 part by weight, and within this range, thermal stability, transparency and colorability are all excellent.

The UV stabilizer may include, for example, at least one selected from the group consisting of benzotriazole-based UV absorbers and HALS-based UV absorbers within the range of 0.1 to 2.5 parts by weight, preferably 0.1 to 2.0 parts by weight of the benzotriazole-based UV absorber. and 0.1 to 2.0 parts by weight of a HALS-based UV stabilizer, more preferably 0.1 to 1.0 parts by weight of a benzotriazole-based UV absorber and 0.1 to 1.0 parts by weight of a HALS-based UV stabilizer, and more preferably benzotriazole-based UV stabilizers. It may include 0.2 to 0.7 parts by weight of a triazole-based UV absorber and 0.2 to 0.7 parts by weight of a HALS-based UV stabilizer, more preferably 0.3 to 0.6 parts by weight of a benzotriazole-based UV absorber and 0.3 to 0.6 parts by weight of a HALS-based UV stabilizer. It can be done, and within this range, there is an advantage of greatly improving weather resistance without impairing impact strength and fluidity.

The benzotriazole-based UV absorber may be, for example, hydroxybenzotriazole, preferably 2-(2'-hydroxyphenyl)benzotriazole, and more preferably 2-(2'-hydroxy-5 '-methylphenyl) benzotriazole, 2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(5'-tert-butyl-2'-hydroxyphenyl ) Benzotriazole, 2-(2'-hydroxy-5'-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole, 2-(3',5'-di-tert-butyl -2'-hydroxyphenyl) -5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-methylphenyl-5-chlorobenzotriazole, 2-(3'- sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotriazole, 2-(2'-hydroxy-4'-octyloxyphenyl)benzotriazole, 2-(3',5' -Di-tert-amyl-2'-hydroxyphenyl)benzotriazole, 2-(3',5'-bis(α,α-dimethylbenzyl)-2'-hydroxyphenyl)benzotriazole, 2- (3'-tert-butyl-2'-hydroxy-5'-(2-octyloxy-carbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-5'- [2-(2-Ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'- (2-methoxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzo Triazole, 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3'-tert-butyl-5'- [2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)benzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole , 2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2'-methylenebis[4-(1,1, 3,3-tetramethylbutyl)-6-benzotriazol-2-ylphenol], and 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxy It may be at least one selected from the group consisting of transesterification products of phenyl] -2H-benzotriazole and polyethylene glycol, and in this case, there is an advantage of significantly improving weather resistance without impairing impact strength and fluidity.

The HALS-based UV stabilizer is preferably 1,1-bis (2,2,6,6-tetramethyl-4-piperidyl) succinate, bis (2,2,6,6-tetramethyl-4-p Peridyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, bis (1-octyloxy-2,2,6,6-tetramethyl-4- piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl)-N-butyl-3,5-di-tert-butyl-4-hydroxybenzylmalonate , Condensation product of 1-(2-hydroxyethyl)-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid, N,N'-bis(2,2,6,6- Linear or cyclic condensation products of tetramethyl-4-piperidyl)hexamethylenediamine with 4-tert-octylamino-2,6-di-chloro-1,3,5-triazine, tris(2,2, 6,6-tetramethyl-4-piperidyl)nitrilotriacetate, tetrakis(2,2,6,6-tetramethyl-4-piperidyl)-1,2,3,4-butane tetracarboxylate , 1,1'-(1,2-ethanediyl)-bis(3,3,5,5-tetramethylpiperazinone), 4-benzoyl-2,2,6,6-tetramethylpiperidine, 4-stearyloxy-2,2,6,6-tetramethylpiperidine, N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylene diamine and 4- linear or cyclic condensation products of morpholino-2,6-dichloro-1,3,5-triazine, and 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3; At least one selected from the group consisting of reaction products of 8-diaza-4-oxospiro-[4,5]decane and epichlorohydrin, more preferably bis(2,2,6,6-tetramethyl -4-piperidyl) sebacate (Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate), 2-(2H-benzotriazole-2-yl)-4-(-(1, 1,3,3-tetramethylbutyl)phenol (2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol) or a mixture thereof, in which case the impact It has the advantage of greatly improving weatherability without impairing strength and fluidity.

The ASA-based resin composition is optionally selected from the group consisting of dyes, pigments, colorants, mold release agents, antistatic agents, antibacterial agents, processing aids, metal deactivators, flame retardants, retardants, anti-drip agents, anti-friction agents and anti-wear agents, as needed. It may further include 0.01 to 5 parts by weight, 0.05 to 3 parts by weight, 0.1 to 2 parts by weight, or 0.5 to 1 part by weight of one or more additives based on the total 100 parts by weight, and within this range, the original ASA-based resin composition There is an effect that the efficacy of the additive is well implemented without deteriorating physical properties.

The ASA-based resin composition preferably has a melt index (220 ° C., 10 kg) of 8 g / 10 min or more, more preferably 8 to 11 g / 10 min, more preferably 9 to 10 kg, as measured according to ASTM D1238. It may be 11 g/10 min, and within this range, there is an excellent effect of balancing impact strength, weather resistance and fluidity.

The ASA-based resin composition preferably has an Izod impact strength (1/4 inch, 23 ℃) measured according to ASTM D256 of 3 kgf·cm/cm ² or more, more preferably 3 to 8 kgf·cm/cm ² , More preferably, it may be 3 to 4 kgf·cm/cm ² , and within this range, there is an excellent effect of balancing impact strength, weather resistance and fluidity.

The ASA-based resin composition has, for example, tensile strength (1/8 inch) according to ASTM 638 of 570 kg/cm 2 or more, preferably 570 to 700 kg/cm 2 , more preferably 580 to 650 kg/cm 2 , More preferably, it is 580 to 610 kg/cm 2 , and within this range, there is an excellent effect of balancing impact strength, tensile strength, weather resistance and fluidity.

The ASA-based resin composition has, for example, a flexural strength of 850 kg/cm 2 or more according to ASTM 790, preferably 850 to 1,000 kg/cm 2 , more preferably 860 to 950 kg/cm 2 , still more preferably 870 to 920 kg/cm 2 , and within this range, there is an excellent effect of balancing impact strength, tensile strength, flexural strength, weather resistance and fluidity.

The ASA-based resin composition may preferably have a surface gloss (45 °) of 80 or more, more preferably 85 or more, or 95 or more, as measured by the ASTM D528 method, and has excellent transparency and colorability within this range, and has different physical properties. There are benefits to having a good balance.

The ASA-based resin composition may preferably have a transparency (Haze) of 7 or less, more preferably 6 or less, and still more preferably 5 or less, measured according to ASTM D1003, within this range, mechanical properties and processability It has the advantage of being excellent in transparency and colorability at the same time.

The ASA-based resin composition may have a weatherability (ΔE) of preferably 1.3 or less, more preferably 1.2 or less, when 6,000 hours have elapsed under ASTM J1960 conditions using a Weather-Ometer. It has excellent mechanical properties, processability, colorability and weather resistance within a range.

The method for preparing the ASA-based resin composition preferably comprises 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, an alkyl methacrylate- Preparing pellets by kneading and extruding 23 to 55% by weight of an aromatic vinyl compound-vinyl cyan compound copolymer and 25 to 45% by weight of a poly(alkyl methacrylate) resin at 200 to 300 ° C. and 100 to 500 rpm. can include

The extrusion kneader used for the kneading and extrusion is not particularly limited if it is an extrusion kneader commonly used in the art to which the present invention pertains, and may be performed, for example, through a single screw extruder, twin screw extruder, or Banbury mixer, preferably It is preferably a twin-screw extruder, and in this case, the composition is uniformly dispersed, resulting in excellent compatibility.

The kneading and extruding may be performed within a range where the barrel temperature (temperature condition) is preferably 210 to 300 °C, more preferably 210 to 280 °C, and still more preferably 220 to 250 °C, in which case per unit time It is possible to perform sufficient melt kneading with an appropriate amount of processing, and there is an effect of not causing problems such as thermal decomposition of the resin component.

The kneading and extrusion are carried out under the condition that the screw rotation speed (rpm) is preferably 150 to 400 rpm, more preferably 100 to 350 rpm, still more preferably 200 to 310 rpm, even more preferably 250 to 350 rpm. In this case, the processing amount per unit time is appropriate, so the process efficiency is excellent, and excessive cutting is suppressed.

The manufacturing method of the ASA-based resin composition shares all the technical characteristics of the ASA-based resin composition described above. Therefore, the description of the overlapping part will be omitted.

molding

The molded article of the present substrate can be made of the thermoplastic resin composition of the present substrate, and in this case, the compatibility is increased, so that the mechanical properties such as impact strength are excellent, and the transparency and colorability are excellent.

The molded article may be, for example, an extrusion molded article or an injection molded article, and preferably includes housings of home appliances such as air conditioners, vacuum cleaners, washing machines, refrigerators and TV back covers; housings of OA devices such as computers, notebooks, monitors, facsimiles, telephones, copiers and scanners; automobile parts such as automobile interior and exterior materials; interior and exterior materials for construction; member for toys; leisure goods; And it may be an interior decoration, etc., more preferably, it may be an exterior material, a finishing material, an unpainted product, or an extruded profile. In this case, there is an advantage that the thermoplastic resin composition of the present substrate can provide a high quality or higher quality required by the market.

The molded article may preferably have a processing thickness, for example, a surface thickness of 0.5 T (mm) or more.

Manufacturing method of molded article

The manufacturing method of the molded article of the present description is preferably 20 to 47% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, an alkyl methacrylate-aromatic preparing pellets by kneading and extruding 23 to 55 wt% of a vinyl compound-vinyl cyan compound copolymer and 25 to 45 wt% of a poly(alkyl methacrylate) resin at 200 to 300° C. and 100 to 500 rpm; and sheet molding or injection molding of the prepared pellets at a molding temperature of 200 to 300 ° C to produce a molded product. In this case, there is an advantage in that high value-added ASA-based resin products having properties such as uncoated, transparent, high chroma, or special color can be manufactured with excellent colorability and transparency even at a certain thickness or more.

The step of manufacturing the molded article may include, for example, forming a sheet of the pellets under a molding temperature of 180 to 300 ° C., and more preferably, a molding temperature of 180 to 300 ° C. and a molding pressure of 50 to 300 Kgf / cm 2 In this case, there is an advantage in that a large sheet molded article having excellent transparency and colorability can be easily manufactured.

The molding temperature is preferably 200 to 230 ° C, more preferably 210 to 220 ° C, and within this range, there is an advantage that a large sheet molded product with excellent transparency and colorability can be easily manufactured.

The molding pressure is preferably 190 to 270 Kgf/cm 2 , more preferably 200 to 250 Kgf/cm 2 , and within this range, there is an advantage in that large injection molded products having high impact strength can be easily manufactured.

As another preferred example, the step of manufacturing the molded article may include injection molding the manufactured pellets under conditions of an injection temperature of 200 to 260 ° C, an injection pressure of 60 to 100 bar, and a packing pressure of 25 to 55 bar, in which case transparency and It has the advantage of being able to easily manufacture large injection molded products with excellent colorability.

The injection temperature is preferably 200 to 230 ° C, more preferably 210 to 220 ° C, and within this range, there is an advantage that large injection molded products with excellent transparency and colorability can be easily manufactured.

The injection pressure is preferably 70 to 90 bar, more preferably 75 to 85 bar, and within this range, there is an advantage in that large injection molded products having high impact strength can be easily manufactured.

The holding pressure may be preferably 30 to 50 bar, more preferably 35 to 45 bar, and there is an advantage in that a large-area injection-molded product having high impact strength can be easily manufactured within this range.

In describing the thermoplastic resin composition of the present description, its manufacturing method and molded article, it is stated that other conditions or equipment not explicitly described may be appropriately selected within the range commonly practiced in the art and are not particularly limited. do.

Hereinafter, preferred embodiments are presented to aid understanding of the present invention, but the following examples are merely illustrative of the present invention, and various changes and modifications are possible within the scope and spirit of the present invention. It is obvious to those skilled in the art, It goes without saying that these variations and modifications fall within the scope of the appended claims.

[Example]

The materials used in the examples below are as follows.

A) Emulsion polymerization type graft copolymer (core: 50% by weight of butyl acrylate polymer-derived units with an average particle diameter of 150 nm, shell: 35% by weight of styrene-derived units, 15% by weight of acrylonitrile-derived units)

B) Bulk polymerization method SAMMA resin: prepared by the following method

1,1-bis(t-butylperoxy)-3,3,5-trimethylcyclohexane was added to a mixed solution of 20 parts by weight of toluene, 24 parts by weight of styrene, 50 parts by weight of methyl methacrylate and 6 parts by weight of acrylonitrile. 0.02 parts by weight, 0.08 parts by weight of n-dodecyl mercaptan and Irgacure (1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1 as a hindered phenolic antioxidant, The polymerization solution to which 0.1 part by weight of 3,5-triazine-2,4,6-(1H,3H,5H)-trione) was added was introduced into a 26 L reactor at a rate of 14 L/hr, while the first reactor was heated to 140 °C. Polymerization was carried out at 150 ° C. in the second reactor, and when the polymerization conversion rate reached about 60% or more, unreacted monomers and reaction medium were removed in a volatilization tank at 215 ° C. to form styrene-acrylic pellets. A ronitrile-methyl methacrylate (SAMMA) resin was prepared. The weight average molecular weight of the SAMMA resin thus prepared was 70,000 g/mol.

C) Bulk polymerization method PMMA resin: prepared by the following method

100 parts by weight of methyl methacrylate, 200 parts by weight of distilled water, 0.3 parts by weight of polyvinyl alcohol as a suspending agent, and 2.0 parts by weight of n-octyl mercaptan were collectively injected into a nitrogen-purged reactor, the temperature inside the reactor was raised to 80 ° C, and AIBN was used as an initiator. 0.05 part by weight was added to initiate the reaction, and the polymerization reaction proceeded for 90 minutes while maintaining the internal temperature of the reaction vessel at 80° C., and then the temperature of the reaction vessel was raised to 110° C. and additional polymerization was performed for 30 minutes. The polymerized beads were washed using a dehydrator and dried for 2 hours at 80 °C in a fluidized bed dryer. The weight average molecular weight of the prepared PMMA resin was 100,000 g/mol.

Examples 1 to 2 and Comparative Examples 1 to 6

Ingredients and contents listed in Table 1 below, 1 part by weight of EBS resin (manufactured by Pioneer Chemical) as a lubricant, 0.5 part by weight of each of songnox 1076 and songnox 1680 (manufactured by Songwan) as an antioxidant, and Tinuvin 770 (manufactured by BASF) as an ultraviolet stabilizer and Pellets were prepared by adding 0.5 parts by weight of Sunsorb 329 (manufactured by Sunfine Global) and kneading and extruding in a twin screw extruder at 230 ° C. and 150 rpm. The melt index was measured with the prepared pellets. In addition, a 0.5T sheet was prepared from the prepared pellets at a molding temperature of 220 °C and a molding pressure of 200 Kgf/cm 2 , and surface gloss, Tt and Haze were measured. Furthermore, the prepared pellets were injected at a molding temperature of 220 ° C., an injection pressure of 50 bar, and a holding pressure of 35 bar to prepare specimens for measuring physical properties, and using them, impact strength, tensile strength, flexural strength, colorability and weather resistance were measured.

[Test Example]

The properties of the pellets, sheets, and specimens prepared in Examples 1 to 2 and Comparative Examples 1 to 6 were measured by the following method, and the results are shown in Table 1 below.

* Rubber content (% by weight): measured based on FT-IR.

* Surface gloss (%): measured according to ASTM D528 at 45°.

* Izod impact strength (kgf cm/cm): measured according to the ASTM 256 method.

* Flexural strength (kgf/cm ² ): Measured according to the ASTM 790 method.

* Tensile strength (kgf/cm ² ): Measured according to the ASTM 638 method.

* Melt index (MI): The prepared pellets were measured by the ASTM D1238 method under conditions of 220 °C and 10 kg.

* Transparency (light diffusivity and light transmittance): Using ASTM D-1003, the haze value and total light transmittance (Tt) of the 0.5 mm thick sheet were measured, respectively. The lower the haze and the higher the transmittance, the better the transparency.

* Surface hardness: measured according to ASTM D785.

* Colorability: Based on the CIELAB mode, the L value of the colorability measurement specimen was measured with a Color eye 7000A color difference meter (manufactured by X-rite). The higher the L value, the higher the colorability because the color of the white plate on the back of the specimen is projected.

* Weather resistance ΔE: When 6,000 hours elapsed under ASTM J1960 conditions using a weather resistance equipment (Weather-Ometer), the color was measured and compared with the initial color. The smaller the ΔE, the smaller the degree of color change, which means that the weather resistance is excellent.

(parts by weight) Example 1 Example 2 A 30 46 B 30 24 C 40 30 rubber content 15 23 Melt index (MI) 9.7 8 impact strength 3.2 4.5 tensile strength 590 450 flexural strength 880 700 Tt 88 83 Haze 4 7 surface gloss 106 93 surface hardness 110 90 colorability 81 76 Weather resistance (ΔE) 1.2 1.7

(parts by weight) Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 A 30 30 65 10 30 56 B 70 40 15 40 65 20 C - 30 20 50 5 24 rubber content 15 15 32.5 5 15 28 Melt index (MI) 12 12 14 18 16 6 impact strength 3.4 3.4 9 2.1 3.5 8.5 tensile strength 540 560 380 700 590 420 flexural strength 840 860 590 1060 885 660 Tt 80 85 82 88 83 84 Haze 17 9.1 10 8 15 9.5 surface gloss 98 96 75 97 97 90 surface hardness 109 105 65 109 105 86 colorability 75 76 75 78 76 75 Weather resistance (ΔE) 1.4 1.6 2.3 1.5 1.4 1.9

As shown in Tables 1 and 2, the ASA-based resin compositions (Examples 1 to 2) according to the present invention have mechanical strength and MI such as impact strength and tensile strength compared to Comparative Examples 1 to 6 not according to the present invention. It was confirmed that the expressed processability had the same or higher value, while the transparency (haze), colorability, and weather resistance were greatly excellent. In particular, Example 1 having a composition ratio and rubber content in a more preferable range was confirmed to have excellent transparency (haze), colorability and weatherability.

Therefore, the ASA-based resin composition according to the present invention maintains mechanical properties and processability equal to or higher than those of conventional ASA-based compositions, and has excellent colorability and transparency even at a certain thickness or more, and has properties such as unpainted, transparent, high chroma, or special color. It was confirmed that it can be applied to high value-added products.

Claims (12)

30 to 46% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, and 24 to 46% by weight of an alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer 30% by weight and 30 to 40% by weight of a poly (alkyl methacrylate) resin;
The total rubber content of the resin composition is 15 to 23% by weight,
Characterized in that the transparency (Haze) measured according to ASTM 1003 is 7 or less and the flexural strength measured according to ASTM 790 is 870 to 920 kgf / cm2
ASA-based resin composition. delete According to claim 1,
The ASA-based resin composition is characterized in that the surface hardness measured in accordance with ASTM D795 is in the range of 90 to 110
ASA-based resin composition. According to claim 1,
The acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer comprises 40 to 60% by weight of acrylate rubber, 25 to 45% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyan compound, characterized in that
ASA-based resin composition. According to claim 1,
The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer comprises 45 to 65% by weight of an alkyl methacrylate, 25 to 35% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyan compound. doing
ASA-based resin composition. According to claim 1,
The alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer has a weight average molecular weight of 10,000 to 150,000 g / mol, characterized in that
ASA-based resin composition. According to claim 1,
Characterized in that the poly (alkyl methacrylate) resin is a polymer comprising an alkyl methacrylate having 1 to 15 carbon atoms in an alkyl group
ASA-based resin composition. According to claim 1,
The poly (alkyl methacrylate) resin has a weight average molecular weight of 50,000 to 200,000 g / mol
ASA-based resin composition. According to claim 1,
The ASA-based resin composition is characterized in that it comprises 0.05 to 5 parts by weight of at least one of a lubricant, a heat stabilizer and a UV stabilizer
ASA-based resin composition. Characterized in that it is prepared from the ASA-based resin composition of any one of claims 1, 3 to 9
molding. According to claim 10,
Characterized in that the molded article is an exterior material, a finishing material, an unpainted product or an extrusion profile
molding. 30 to 46% by weight of an acrylate-aromatic vinyl compound-vinyl cyan compound graft copolymer with an acrylate rubber having an average particle diameter of 50 to 150 nm as a core, and 24 to 46% by weight of an alkyl methacrylate-aromatic vinyl compound-vinyl cyan compound copolymer preparing pellets by kneading and extruding 30% by weight and 30 to 40% by weight of a poly(alkyl methacrylate) resin at 200 to 300 ° C. and 100 to 500 rpm; And sheet molding or injection molding the prepared pellets at a molding temperature of 200 to 300 ° C. to produce a molded article,
The total rubber content of the resin composition is 15 to 23% by weight,
Characterized in that the transparency (Haze) measured according to ASTM 1003 is 7 or less and the flexural strength measured according to ASTM 790 is 870 to 920 kgf / cm2
Method for manufacturing molded articles.