Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
  • C08L33/04—Homopolymers or copolymers of esters
  • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers

Definitions

• the present invention provides a novel antistatic transparent acrylic resin composition, and more particularly, has excellent permanent antistatic properties, is inexpensive, has good transparency, It can prevent electrostatic charging of various parts such as lighting products, equipment inscriptions, and meter covers, such as electronics products, home appliances, and 0 ⁇ devices.
• the present invention relates to an acrylic resin composition suitable as a material.
• acrylic resins have excellent transparency and rigidity, so they have been widely used as materials for various components such as electronics products, home appliances, and OA equipment. ing
• this acrylic resin has a high surface resistivity and is easily charged by friction, etc., so that dust adheres to it and impairs its appearance, or it becomes an electronic component.
• they have disadvantages, such as causing undesirable situations due to electrostatic charging. Therefore, there is a demand for the development of a material that retains the excellent properties of an acrylic resin and has an antistatic property.
• Examples of methods for imparting permanent antistatic properties include, for example,
• Polyesterester is converted to methyl methacrylate-butane styrene-styrene copolymer (MBS resin) or methyl methacrylate acrylate.
• MBS resin methyl methacrylate-butane styrene-styrene copolymer
• MABS resin tributyl-butadiene styrene copolymer
• acrylic resins are excellent in transparency.However, in order to impart permanent antistatic properties to the acrylic resins, other polymer compounds are used. When kneading, the compatibility of the two is poor and the transparency is often impaired Also, even if a material having good transparency is obtained, a sufficient antistatic effect cannot be obtained or the heat resistance decreases. In addition, if a polymer compound having a complex fiber structure is produced and used in order to exert a sufficient antistatic effect, the production cost increases, and the versatility is reduced. It is impossible to obtain an acrylic resin having antistatic properties which has no problem in practical use.
• the present inventors have conducted research on an acrylic resin composition having excellent antistatic properties and transparency, and firstly, a polyamide imide elastomer having a low hard segment content.
• a polyamide imide elastomer having a low hard segment content One is that it has a good affinity for the acrylic resin and gives a composition that is finely dispersed and transparent and has excellent antistatic properties. It is disclosed in 753.
• this polyimididoelastomer has a pale yellow color, and the acryl-based resin containing this is not always satisfactory in that it is colored pale yellow. Further, when the acrylic resin composition is immersed in water, the transparency is not always satisfactory.
• composition having excellent antistatic properties being transparent, having a very low degree of coloration, and having a very small decrease in transparency even when immersed in water; and A certain ratio of a specific compound with the tomer Ri by the and this blending, found that you provide more excellent composition Ri is good antistatic properties, and have completed the present invention based on the finding of this.
• the component (ii) used in the polyamide elastomer used as the component (ii) is a) a small segment.
• Polyamide segments include aminocarbonic acids or lactams having 6 or more carbon atoms, and Z or salts of diamines having 4 or more carbon atoms and dicarboxylic acids. Any of the polyamide-forming monomers and a polymer using dicarbonic acid or diamine as a linking agent.
• Polyamide which is a node segment, relates to the heat resistance, strength, and hardness of the elastomer and the affinity for the acrylic resin.
• the content in the stoma is in the range of 25 to 60% by weight (that is, (b) the content of the segmental polyether segment in the range of 75 to 40% by weight). Ah Must be used, preferably between 25 and 45 weight.
• Ah Must be used, preferably between 25 and 45 weight.
• n is a natural number.
• Polyoxyethylene methyl glycol, polyoxyhexylene methyl glycol and polyoxyethylene polyoxypropylene glycol block Polymers, etc., and those obtained by copolymerizing butanediol, propylene glycol, neopentyl glycol, hydroquinone, etc. as an ether component are also used. be able to.
• glycols in particular, polyoxyethylene glycols and polyoxytetramethyl glycols or polyoxypropylene glycols Combination with Call, and Polyoxyethylene Polypropylene Glycol Block Copolymer, and Polyoxyethylene Polyoxypropylene Relatively wide range of combinations of the color block copolymer and the polyoxyethylene glycol A transparent elastomer is obtained within the range of the ratio, which is preferable. Combinations of polyoxyethylene glycol and polyoxytetramethylethylene glycol are particularly preferred.
• boro- xyalkylen glycols other than polyoxyethylene glycol have an action of appropriately reducing the hydrophilicity of the obtained elastomer, and depending on the amount thereof, it is hydrophilic. It is possible to adjust the amount of polyxylene glycol in the glycosyl alcohol in the present invention to be 99 to 30: weight. Preferably, it is particularly preferred to choose between 95 and 50 weight. If the amount of polyoxyethylene glycol exceeds 9.9% by weight, the resulting acrylic resin composition using the elastomer has low stability under moisture absorbing conditions, and the haze value tends to increase. A decrease in antistatic performance is observed. When the amount is less than 30% by weight, not only is it difficult to obtain a transparent elastomer, but also the ability to impart antistatic properties is undesirably reduced.
• the linking group between the polyamido segment of (a) and the polyamidate segment of (b) is an amide group, an ester group, or an amide group and an ester group coexist.
• the dicarboxylic acid or diamine can be used as the linking agent.
• the dicarboxylic acid may be an aliphatic dicarboxylic acid or an aromatic dicarboxylic acid. Examples of such a dicarboxylic acid include adipine. Acid, cenosuccinic acid, dodecandic acid, telephthalic acid, isophthalic acid, cyclohexandicarcarboxylic acid, etc. It may be used, or two or more kinds may be used in combination.
• This dicarboxylic acid can be used in a substantially equimolar fashion with the above-mentioned glycols to obtain a high-molecular-weight polyamide elastomer.
• the polyamide elastomer used has a transparency of 50% or less in a pais number at a wall thickness of 1 mm, and the haze number exceeds 50%.
• the degree of polymerization of the poly T midelastomer used in the composition of the present invention can be changed as necessary.
• the viscosity of the elastomer solution having a concentration of 0.5 wt.% By volume and a volume ratio of 0.5% by volume measured at temperature S 0 is 1.5 or more, and the relative viscosity is 1.5 or more. If it is less than 5, the mechanical properties are poor, and when kneaded with an acryl resin, the mechanical properties of the composition may be insufficient.
• Preferred spray viscosity is 1.6 or more Q
• various types of heat stabilizers such as heat aging inhibitors and antioxidants can be used to increase the thermal stability of the obtained polymidoelastomers. It may be added at any of the middle, late and final stages. Also, it can be added when kneading a polymid elastomer with an acrylic resin.

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Polyamides (AREA)
• Compositions Of Macromolecular Compounds (AREA)

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Citations (4)

• 1992
  • 1992-04-09 WO PCT/JP1992/000445 patent/WO1993021273A1/ja not_active Ceased
  • 1992-04-09 EP EP92907655A patent/EP0602241B1/en not_active Expired - Lifetime
  • 1992-04-09 CA CA002110587A patent/CA2110587C/en not_active Expired - Fee Related

Patent Citations (4)

Non-Patent Citations (1)

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