JP6313133B2 - Multilayer - Google Patents

Description

  The present invention relates to a multilayer body excellent in transparency, chemical resistance, surface hardness, and adhesion.

  Conventionally, methacrylic resin, polycarbonate resin (hereinafter sometimes referred to as PC) are known as transparent resins, and in the form of molded products, films, etc., such as electric and electronic parts, optical parts, automobile parts, mechanical parts, etc. Used in a wide range of fields.

  Methacrylic acid resins such as polymethyl methacrylate (hereinafter sometimes referred to as PMMA) have high transparency and hard surface hardness (pencil hardness H to 3H), and are often used as optical materials such as lenses and optical fibers. . However, there is a problem that the resistance to daily use drugs such as sunscreen is low, and the use in applications where human hands directly touch is limited. Non-Patent Document 1 describes that acrylic resins are considered to be resistant to fragrances and tanning creams.

  In recent years, there has been a carbon neutrality that does not depend on petroleum as a raw material and does not increase carbon dioxide even when burned due to concerns about the depletion of petroleum resources and the problem of increased carbon dioxide in the air that causes global warming. Biomass resources have attracted a great deal of attention, and biomass plastics produced from biomass resources are actively developed in the polymer field. In particular, polycarbonate mainly using isosorbide as a monomer is excellent in terms of heat resistance, weather resistance, surface hardness, chemical resistance, and has been noted because it has different characteristics from polycarbonate made of general bisphenol A. (Patent Documents 1 and 2). While these isosorbide-based polycarbonates are excellent in heat resistance, impact resistance, and weather resistance, adhesion with other resins, for example, adhesion with PMMA is remarkably poor, and it is usually difficult to form a multilayer body.

Patent Document 3 proposes a laminate of an isosorbide-based polycarbonate and an acrylic resin, but the adhesion of these laminates is very low and does not have a performance that can be used practically. Moreover, the PMMA surface is assumed as the outermost surface, and the problem that it is inferior in chemical resistance still remains.
Various laminates of an aromatic polycarbonate and an acrylic resin have been proposed (Patent Documents 4 and 5), but these laminates are similarly inferior in chemical resistance, and further contain an aromatic polycarbonate, so that the weather resistance is improved. There's a problem.

Patent Documents 6 and 7 show a copolymer composition having isosorbide and a spiro ring skeleton, but are intended for use in optical film applications, and do not describe a viewpoint as a laminate with an acrylic resin.
Therefore, a multilayer body excellent in transparency, chemical resistance, surface hardness, and adhesion has not yet been provided.

JP 2006-36954 A JP 2009-46519 A JP 2011-161871 A JP 55-59929 A Japanese Patent Laid-Open No. 04-270652 International Publication No. 2008/020636 Pamphlet Japanese Patent No. 4626847

“2013 Decorative Film Market Outlook and Maker Strategy”, pages 118-122 Fuji Keizai

  An object of the present invention is to provide a multilayer body excellent in transparency, chemical resistance, surface hardness, and adhesion.

As a result of intensive studies, the present inventors have used a polycarbonate resin containing a certain ratio of isosorbide and a monomer having a specific spiro ring structure as a copolymerization monomer, so that transparency, chemical resistance, surface hardness, The inventors have found that the adhesiveness is excellent and that the adhesiveness with the acrylic resin can be greatly improved, and the present invention has been completed.
That is, according to the present invention, the object of the invention is achieved by the following.

で表される単位（ａ−１）と下記式（ａ−２）

（式中、Ｗは炭素数１〜２０のアルキレン基または炭素数６〜２０のシクロアルキレン基を表し、Ｒは炭素数１〜２０の分岐または直鎖のアルキル基、もしくは置換基を有してもよい炭素数６〜２０のシクロアルキル基を表し、ｍは０〜１０の整数を示す。）
で表される単位（ａ−２）を含み、単位（ａ−１）と単位（ａ−２）とのモル比（ａ−１／ａ−２）が３０／７０〜９５／５であるポリカーボネート樹脂（Ａ）を含む層とアクリル系樹脂（Ｂ）を含む層とをそれぞれ少なくとも１層以上有する多層体。 1. The main repeating unit is the following formula (a-1)

Unit (a-1) represented by the following formula (a-2)

Wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, and R has a branched or straight chain alkyl group having 1 to 20 carbon atoms or a substituent. Represents a cycloalkyl group having 6 to 20 carbon atoms, and m represents an integer of 0 to 10.)
A polycarbonate having a molar ratio (a-1 / a-2) of units (a-1) to units (a-2) of 30/70 to 95/5 A multilayer body having at least one layer each including a resin (A) layer and an acrylic resin (B) layer.

2. 2. The multilayer body according to item 1, wherein the layer containing the polycarbonate resin (A) is the outermost layer of the multilayer body, and the layer containing the acrylic resin (B) is at least one layer as the inner layer of the multilayer body.
3. 2. The multilayer body according to item 1, wherein the polycarbonate resin (A) has a glass transition temperature of 90 ° C. to 145 ° C.
4). 2. The multilayer body according to item 1, wherein the surface hardness of the layer containing the polycarbonate resin (A) is F or more.
5. 2. The multilayer body according to item 1, wherein the glass transition temperature of the acrylic resin (B) is 100 ° C. to 140 ° C.
6). 2. The multilayer body according to item 1 above, wherein the thickness of the layer containing the polycarbonate resin (A) is 5 to 50% of the total thickness of the multilayer body.
7). 2. The multilayer body according to item 1, wherein the total thickness of the multilayer body is 0.03 to 300 mm.

  In the present invention, by laminating a layer containing a polycarbonate resin containing isosorbide and a diol having a spiro ring structure as a structural unit at a constant ratio and a layer containing an acrylic resin, transparency, chemical resistance, surface hardness, adhesion It has become possible to provide a multilayer body having excellent properties. Therefore, the industrial effect that it produces is exceptional.

Hereinafter, the present invention will be described in detail.
<Polycarbonate resin>
(Polycarbonate resin (A))
As for the polycarbonate resin (A) of this invention, the main repeating unit is comprised from the unit (a-1) and the unit (a-2). The main repeating unit means that the sum of the unit (a-1) and the unit (a-2) is 50 mol% or more, preferably 60 mol% or more, more preferably 70 mol based on all repeating units. % Or more, more preferably 80 mol% or more.

(Unit (a-1))
The unit (a-1) in the present invention is derived from an aliphatic diol having an ether group, as shown in the formula (a-1).
The polycarbonate resin containing a diol having an ether bond among the biomass resources represented by the formula (a-1) is a material having high heat resistance and high pencil hardness.
Examples of the formula (a-1) include repeating units (a-1-1), (a-1-2) and (a-1-3) represented by the following formulas having a stereoisomeric relationship. The

These are saccharide-derived ether diols that are also obtained from natural biomass and are one of the so-called renewable resources. The repeating units (a-1-1), (a-1-2) and (a-1-3) are units derived from aliphatic diols called isosorbide, isomannide and isoid, respectively. Isosorbide is obtained by hydrogenating D-glucose obtained from starch and then dehydrating it. Other ether diols can be obtained by the same reaction except for the starting materials.
Among isosorbide, isomannide, and isoidide, a repeating unit derived from isosorbide (1,4; 3,6-dianhydro-D-sorbitol) is particularly preferable because of ease of production and heat resistance.

(Unit (a-2))
The unit (a-2) in the present invention is derived from a diol having a spiro ring structure. As a diol compound having a spiro ring structure, 3,9-bis (2-hydroxyethyl) -2,4,8,10-tetraoxaspiro (5.5) undecane, 3,9-bis (2-hydroxy-1) , 1-dimethylethyl) -2,4,8,10-tetraoxaspiro (5.5) undecane, 3,9-bis (2-hydroxy-1,1-diethylethyl) -2,4,8,10 -Fats such as tetraoxaspiro (5.5) undecane, 3,9-bis (2-hydroxy-1,1-dipropylethyl) -2,4,8,10-tetraoxaspiro (5.5) undecane And cyclic diol compounds.
Preferably, 3,9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro (5.5) undecane is used.

(Other units)
As the diol compound for deriving other units other than the unit (a-1) and the unit (a-2), any of other aliphatic diol compounds, alicyclic diol compounds, and aromatic dihydroxy compounds may be used. Examples include diol compounds and oxyalkylene glycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, and polyethylene glycol described in No. 2004/111106 pamphlet and International Publication No. 2011/021720 pamphlet.

  Examples of the aliphatic diol compound include 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 1.9-nonanediol, , 10-decanediol, 1,12-dodecanediol, 2-methyl-1,3-propanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, 2-n-butyl-2-ethyl-1 , 3-propanediol, 2,2-diethyl-1,3-propanediol, 2,4-diethyl-1,5-pentanediol, 1,2-hexane glycol, 1,2-octyl glycol, 2-ethyl- 1,3-hexanediol, 2,3-diisobutyl-1,3-propanediol, 2,2-diisoamyl-1,3-propanediol And 2-methyl-2-propyl-1,3-propanediol.

  Examples of the alicyclic diol compound include cyclohexane dimethanol, tricyclodecane dimethanol, adamantane diol, pentacyclopentadecane dimethanol, 2,2,4,4-tetramethyl-1,3-cyclobutane diol, and the like.

  As aromatic dihydroxy compounds, α, α′-bis (4-hydroxyphenyl) -m-diisopropylbenzene (bisphenol M), 9,9-bis (4-hydroxy-3-methylphenyl) fluorene, 1,1- Bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 4,4′-dihydroxy-3,3′-dimethyldiphenyl sulfide, bisphenol A, 2 , 2-bis (4-hydroxy-3-methylphenyl) propane (bisphenol C), 2,2-bis (4-hydroxyphenyl) -1,1,1,3,3,3-hexafluoropropane (bisphenol AF) ) And 1,1-bis (4-hydroxyphenyl) decane.

(composition)
In the polycarbonate resin (A) used in the present invention, the main repeating unit contains the unit (a-1) and the unit (a-2), and the molar ratio (a-1 / a-2) is 30 /. 70-95 / 5. A molar ratio (a-1 / a-2) of 30/70 to 95/5 is preferable because chemical resistance and surface hardness are increased, and adhesion with an acrylic resin is also obtained. The molar ratio (a-1 / a-2) between the unit (a-1) and the unit (a-2) is preferably 40/60 to 90/10, and more preferably 50/50 to 85/15. In the range of this composition, it is excellent in especially the balance of adhesiveness with an acrylic resin, and chemical resistance. When the molar ratio (a-1 / a-2) is smaller than 30/70, the chemical resistance is poor. On the other hand, when the molar ratio (a-1 / a-2) is larger than 95/5, acrylic is used. Adhesion with resin deteriorates. The molar ratio (a-1 / a-2) can be measured and calculated by proton NMR of JNM-AL400 manufactured by JEOL.

(Manufacturing method of polycarbonate resin (A))
The polycarbonate resin (A) is produced by a reaction means known per se for producing an ordinary polycarbonate resin, for example, a method of reacting a diol component with a carbonate precursor such as a carbonic acid diester. Next, basic means for these manufacturing methods will be briefly described.

  The transesterification reaction using a carbonic acid diester as a carbonate precursor is carried out by a method in which a predetermined proportion of a diol component is stirred with a carbonic acid diester under heating in an inert gas atmosphere to distill the resulting alcohol or phenol. The reaction temperature varies depending on the boiling point of the alcohol or phenol produced, but is usually in the range of 120 to 300 ° C. The reaction is completed while distilling off the alcohol or phenol produced under reduced pressure from the beginning. Moreover, you may add a terminal stopper, antioxidant, etc. as needed.

  Examples of the carbonic acid diester used in the transesterification include esters such as an aryl group having 6 to 12 carbon atoms and an aralkyl group which may be substituted. Specific examples include diphenyl carbonate, ditolyl carbonate, bis (chlorophenyl) carbonate and m-cresyl carbonate. Of these, diphenyl carbonate is particularly preferred. The amount of diphenyl carbonate used is preferably 0.97 to 1.10 mol, more preferably 1.00 to 1.06 mol, per 1 mol of the total of dihydroxy compounds.

In the melt polymerization method, a polymerization catalyst can be used to increase the polymerization rate. Examples of the polymerization catalyst include alkali metal compounds, alkaline earth metal compounds, nitrogen-containing compounds, and metal compounds.
As such compounds, organic acid salts, inorganic salts, oxides, hydroxides, hydrides, alkoxides, quaternary ammonium hydroxides, and the like of alkali metals and alkaline earth metals are preferably used. It can be used alone or in combination.

  Examples of the alkali metal compound include sodium hydroxide, potassium hydroxide, cesium hydroxide, lithium hydroxide, sodium bicarbonate, sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, sodium acetate, potassium acetate, cesium acetate, lithium acetate, Sodium stearate, potassium stearate, cesium stearate, lithium stearate, sodium borohydride, sodium benzoate, potassium benzoate, cesium benzoate, lithium benzoate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, phosphorus Examples include dilithium oxyhydrogen, disodium phenylphosphate, disodium salt of bisphenol A, 2 potassium salt, 2 cesium salt, 2 lithium salt, sodium salt of phenol, potassium salt, cesium salt, lithium salt and the like.

  Alkaline earth metal compounds include magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate, magnesium diacetate, calcium diacetate, strontium diacetate, diacetate Examples include barium and barium stearate.

  Examples of nitrogen-containing compounds include quaternary ammonium hydroxides having alkyl, aryl groups, etc., such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, and trimethylbenzylammonium hydroxide. Can be mentioned. Further, tertiary amines such as triethylamine, dimethylbenzylamine, and triphenylamine, and imidazoles such as 2-methylimidazole, 2-phenylimidazole, and benzimidazole can be used. Moreover, bases or basic salts such as ammonia, tetramethylammonium borohydride, tetrabutylammonium borohydride, tetrabutylammonium tetraphenylborate, tetraphenylammonium tetraphenylborate and the like are exemplified.

Examples of metal compounds include zinc aluminum compounds, germanium compounds, organotin compounds, antimony compounds, manganese compounds, titanium compounds, zirconium compounds, and the like. These compounds may be used alone or in combination of two or more.
The amount of these polymerization catalysts used is preferably 1 × 10 ⁻⁹ to 1 × 10 ⁻² equivalent, preferably 1 × 10 ⁻⁸ to 1 × 10 ⁻⁵ equivalent, more preferably 1 × with ^respect to 1 mol of the diol component. It is selected in the range of 10 ⁻⁷ to 1 × 10 ⁻³ equivalents.

  In addition, a catalyst deactivator can be added at a later stage of the reaction. As the catalyst deactivator to be used, a known catalyst deactivator is effectively used. Among them, sulfonic acid ammonium salt and phosphonium salt are preferable. Furthermore, salts of dodecylbenzenesulfonic acid such as tetrabutylphosphonium salt of dodecylbenzenesulfonic acid and salts of paratoluenesulfonic acid such as tetrabutylammonium salt of paratoluenesulfonic acid are preferable.

  Further, as esters of sulfonic acid, methyl benzenesulfonate, ethyl benzenesulfonate, butyl benzenesulfonate, octyl benzenesulfonate, phenyl benzenesulfonate, methyl paratoluenesulfonate, ethyl paratoluenesulfonate, butyl paratoluenesulfonate, Octyl paratoluenesulfonate, phenyl paratoluenesulfonate and the like are preferably used. Among these, dodecylbenzenesulfonic acid tetrabutylphosphonium salt is most preferably used.

  The amount of the catalyst deactivator used is preferably 0.5 to 50 mol per mol of the catalyst when at least one polymerization catalyst selected from alkali metal compounds and / or alkaline earth metal compounds is used. It can be used in a proportion, more preferably in a proportion of 0.5 to 10 mol, still more preferably in a proportion of 0.8 to 5 mol.

(Specific viscosity: η _SP )
The specific viscosity (η _SP ) of the polycarbonate resin (A) is preferably in the range of 0.2 to 1.5. When the specific viscosity is in the range of 0.2 to 1.5, the strength and molding processability of the molded product are good. More preferably, it is 0.25-1.2, More preferably, it is 0.3-1.0, Most preferably, it is 0.3-0.5.
The specific viscosity referred to in the present invention is determined from an solution obtained by dissolving 0.7 g of polycarbonate resin in 100 ml of methylene chloride at 20 ° C. using an Ostwald viscometer.
Specific viscosity (η _SP ) = (t−t ₀ ) / t ₀
[T ₀ is methylene chloride falling seconds, t is sample solution falling seconds]

  In addition, as a specific measurement of specific viscosity, it can carry out in the following way, for example. First, the polycarbonate resin is dissolved in 20 to 30 times the weight of methylene chloride, and the soluble component is collected by celite filtration, and then the solution is removed and dried sufficiently to obtain a solid component soluble in methylene chloride. Using a Ostwald viscometer, the specific viscosity at 20 ° C. is determined from a solution of 0.7 g of the solid dissolved in 100 ml of methylene chloride.

(Glass transition temperature: Tg)
The glass transition temperature (Tg) of the polycarbonate resin (A) is preferably 90 to 145 ° C, more preferably 100 to 140 ° C. When the Tg is 90 to 145 ° C., the heat resistance stability and moldability are favorable when used as an optical molded product.
The glass transition temperature (Tg) is measured at 29 ° C./min using a 2910 type DSC manufactured by TA Instruments Japan.

(surface hardness)
The layer made of the polycarbonate resin (A) preferably has a pencil hardness of F or higher. It is more preferably H or more from the viewpoint of excellent scratch resistance. The pencil hardness is 4H or less and has a sufficient function. In the present invention, the pencil hardness is a hardness that does not leave a scratch mark even when the resin of the present invention is rubbed with a pencil having a specific pencil hardness, and measured according to JIS K-5600. It is preferable to use as an index the pencil hardness used in the surface hardness test of the coating film that can be formed. Pencil hardness becomes soft in the order of 9H, 8H, 7H, 6H, 5H, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B, 6B, the hardest is 9H, The soft one is 6B.

(Additive)
The polycarbonate resin used in the present invention is a heat stabilizer, a plasticizer, a light stabilizer, a polymerized metal deactivator, a flame retardant, a lubricant, an antistatic agent, a surfactant, an antibacterial agent, if necessary and necessary. Additives such as ultraviolet absorbers and mold release agents can be blended.

(Heat stabilizer)
The polycarbonate resin used in the present invention particularly preferably contains a heat stabilizer in order to suppress a decrease in molecular weight and a deterioration in hue during extrusion and molding. Examples of the heat stabilizer include a phosphorus heat stabilizer, a phenol heat stabilizer, and a sulfur heat stabilizer, and these can be used alone or in combination of two or more. In particular, since the ether diol residue of the unit (a-1) is deteriorated by heat and oxygen and easily colored, it is preferable to contain a phosphorus heat stabilizer as the heat stabilizer. As the phosphorus stabilizer, a phosphite compound is preferably blended. Examples of the phosphite compound include pentaerythritol type phosphite compounds, phosphite compounds having a cyclic structure by reacting with dihydric phenols, and phosphite compounds having other structures.

  Specific examples of the pentaerythritol phosphite compound include distearyl pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, and bis (2,6 -Di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-ethylphenyl) pentaerythritol diphosphite, phenylbisphenol A pentaerythritol diphosphite, And bis (nonylphenyl) pentaerythritol diphosphite, dicyclohexylpentaerythritol diphosphite, and the like. Among them, distearyl pentaerythritol diphosphite and bis (2,4-di-ter - a butyl phenyl) pentaerythritol diphosphite.

  Examples of the phosphite compound having a cyclic structure by reacting with the above dihydric phenols include 2,2′-methylenebis (4,6-di-tert-butylphenyl) (2,4-di-tert-butylphenyl). ) Phosphite, 2,2′-methylenebis (4,6-di-tert-butylphenyl) (2-tert-butyl-4-methylphenyl) phosphite, 2,2′-methylenebis (4-methyl-6-) tert-butylphenyl) (2-tert-butyl-4-methylphenyl) phosphite, 2,2′-ethylidenebis (4-methyl-6-tert-butylphenyl) (2-tert-butyl-4-methylphenyl) ) Phosphite, 2,2′-methylene-bis- (4,6-di-tert-butylphenyl) octyl phosphite, 6-tert-butyl Ru-4- [3-[(2,4,8,10) -tetra-tert-butyldibenzo [d, f] [1,3,2] dioxaphosphin-6-yl) oxy] propyl] -2-methylphenol and the like.

  Examples of the phosphite compounds having other structures described above include triphenyl phosphite, tris (nonylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, and didecyl monophenyl phosphite. , Dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octylphos Phyto, Tris (diethylphenyl) phosphite, Tris (di-iso-propylphenyl) phosphite, Tris (di-n-butylphenyl) phosphite, Tris (2,4-di-te t- butylphenyl) phosphite, and tris (2,6-di -tert- butylphenyl) phosphite and the like.

In addition to various phosphite compounds, for example, phosphate compounds, phosphonite compounds, and phosphonate compounds can be mentioned.
Examples of the phosphate compound include tributyl phosphate, trimethyl phosphate, tricresyl phosphate, triphenyl phosphate, trichlorophenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, diphenyl monoorxenyl phosphate, tributoxyethyl phosphate, dibutyl phosphate, dioctyl phosphate, Examples thereof include diisopropyl phosphate, and triphenyl phosphate and trimethyl phosphate are preferable.

  Examples of the phosphonite compound include tetrakis (2,4-di-tert-butylphenyl) -4,4′-biphenylenediphosphonite, tetrakis (2,4-di-tert-butylphenyl) -4,3′-biphenylenedi. Phosphonite, tetrakis (2,4-di-tert-butylphenyl) -3,3′-biphenylenediphosphonite, tetrakis (2,6-di-tert-butylphenyl) -4,4′-biphenylenediphosphonite Tetrakis (2,6-di-tert-butylphenyl) -4,3′-biphenylene diphosphonite, tetrakis (2,6-di-tert-butylphenyl) -3,3′-biphenylene diphosphonite, bis (2,4-di-tert-butylphenyl) -4-phenyl-phenylphosphonite, bis (2,4-di tert-butylphenyl) -3-phenyl-phenylphosphonite, bis (2,6-di-n-butylphenyl) -3-phenyl-phenylphosphonite, bis (2,6-di-tert-butylphenyl)- 4-phenyl-phenylphosphonite, bis (2,6-di-tert-butylphenyl) -3-phenyl-phenylphosphonite, and the like, and tetrakis (di-tert-butylphenyl) -biphenylenediphosphonite, bis (Di-tert-butylphenyl) -phenyl-phenylphosphonite is preferred, tetrakis (2,4-di-tert-butylphenyl) -biphenylenediphosphonite, bis (2,4-di-tert-butylphenyl)- More preferred is phenyl-phenylphosphonite. Such a phosphonite compound is preferable because it can be used in combination with a phosphite compound having an aryl group in which two or more alkyl groups are substituted.

Examples of the phosphonate compound include dimethyl benzenephosphonate, diethyl benzenephosphonate, and dipropyl benzenephosphonate.
Among the above phosphorous heat stabilizers, trisnonylphenyl phosphite, trimethyl phosphate, tris (2,4-di-tert-butylphenyl) phosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol Diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite is preferably used.

Said phosphorus heat stabilizer can be used individually or in combination of 2 or more types. The phosphorus heat stabilizer is preferably blended in an amount of 0.001 to 1 part by weight, more preferably 0.01 to 0.5 part by weight, and still more preferably 0.01 to 0.3 part by weight per 100 parts by weight of the polycarbonate resin. The
The polycarbonate resin used in the present invention contains a hindered phenol-based heat stabilizer or sulfur-based heat stabilizer as a heat stabilizer for the purpose of suppressing molecular weight reduction and hue deterioration during extrusion and molding. It can also be added in combination with a system heat stabilizer.

  The hindered phenol-based heat stabilizer is not particularly limited as long as it has an antioxidant function. For example, n-octadecyl-3- (4′-hydroxy-3 ′, 5′-di-t- Butylphenyl) propionate, tetrakis {methylene-3- (3 ′, 5′-di-tert-butyl-4-hydroxyphenyl) propionate} methane, distearyl (4-hydroxy-3-methyl-5-tert-butylbenzyl) ) Malonate, triethylglycol-bis {3- (3-t-butyl-5-methyl-4-hydroxyphenyl) propionate}, 1,6-hexanediol-bis {3- (3,5-di-t- Butyl-4-hydroxyphenyl) propionate}, pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxy) Phenyl) propionate}, 2,2-thiodiethylenebis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate}, 2,2-thiobis (4-methyl-6-t-butylphenol) 1,3,5-trimethyl-2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tris (3,5-di-tert-butyl-4-hydroxybenzyl) ) -Isocyanurate, 2,4-bis {(octylthio) methyl} -o-cresol, isooctyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, 2,5,7,8 Tetramethyl-2 (4 ′, 8 ′, 12′-trimethyltridecyl) chroman-6-ol, 3,3 ′, 3 ″, 5,5 ′, 5 ″ -hexa-t-butyl-a, a ', "- (mesitylene-2,4,6-triyl) tri -p- cresol.

  Among these, n-octadecyl-3- (4′-hydroxy-3 ′, 5′-di-t-butylphenyl) propionate, pentaerythrityl-tetrakis {3- (3,5-di-t-butyl) -4-hydroxyphenyl) propionate}, 3,3 ′, 3 ″, 5,5 ′, 5 ″ -hexa-t-butyl-a, a ′, a ′-(mesitylene-2,4,6-triyl) Tri-p-cresol, 2,2-thiodiethylenebis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate} and the like are preferable.

These hindered phenol heat stabilizers may be used alone or in combination of two or more.
The hindered phenol heat stabilizer is preferably 0.001 to 1 part by weight, more preferably 0.01 to 0.5 part by weight, and still more preferably 0.01 to 0.3 part by weight per 100 parts by weight of the polycarbonate resin. Blended.

  Examples of the sulfur heat stabilizer include dilauryl-3,3′-thiodipropionate, ditridecyl-3,3′-thiodipropionate, dimyristyl-3,3′-thiodipropionate, diester Stearyl-3,3′-thiodipropionate, laurylstearyl-3,3′-thiodipropionate, pentaerythritol tetrakis (3-laurylthiopropionate), bis [2-methyl-4- (3 -Laurylthiopropionyloxy) -5-tert-butylphenyl] sulfide, octadecyl disulfide, mercaptobenzimidazole, 2-mercapto-6-methylbenzimidazole, 1,1′-thiobis (2-naphthol) and the like. . Among the above, pentaerythritol tetrakis (3-lauryl thiopropionate) is preferable.

One of these sulfur heat stabilizers may be used alone, or two or more thereof may be used in combination.
The sulfur-based heat stabilizer is preferably added in an amount of 0.001 to 1 part by weight, more preferably 0.01 to 0.5 part by weight, and still more preferably 0.01 to 0.3 part by weight per 100 parts by weight of the polycarbonate resin. The
When a phosphite heat stabilizer, a phenol heat stabilizer, and a sulfur heat stabilizer are used in combination, the total of these is preferably 0.001 to 1 part by weight, more preferably 0. 01 to 0.3 parts by weight is blended.

(Release agent)
The polycarbonate resin used in the present invention can be blended with a release agent within a range that does not impair the object of the present invention in order to further improve the releasability from the mold during melt molding.
Such release agents include higher fatty acid esters of mono- or polyhydric alcohols, higher fatty acids, paraffin wax, beeswax, olefin waxes, olefin waxes containing carboxy groups and / or carboxylic anhydride groups, silicone oils, Examples include organopolysiloxane.

The higher fatty acid ester is preferably a partial ester or a total ester of a monovalent or polyhydric alcohol having 1 to 20 carbon atoms and a saturated fatty acid having 10 to 30 carbon atoms. Such partial esters or total esters of monohydric or polyhydric alcohols and saturated fatty acids include, for example, stearic acid monoglyceride, stearic acid diglyceride, stearic acid triglyceride, stearic acid monosorbate, stearyl stearate, behenic acid monoglyceride, behenic acid Behenyl, pentaerythritol monostearate, pentaerythritol tetrastearate, pentaerythritol tetrapelargonate, propylene glycol monostearate, stearyl stearate, palmityl palmitate, butyl stearate, methyl laurate, isopropyl palmitate, biphenyl biphene -To, sorbitan monostearate, 2-ethylhexyl stearate and the like.
Of these, stearic acid monoglyceride, stearic acid triglyceride, pentaerythritol tetrastearate, and behenyl behenate are preferably used.

As the higher fatty acid, a saturated fatty acid having 10 to 30 carbon atoms is preferable. Such fatty acids include myristic acid, lauric acid, palmitic acid, stearic acid, behenic acid and the like.
These release agents may be used alone or in combination of two or more. The amount of the release agent is preferably 0.01 to 5 parts by weight with respect to 100 parts by weight of the polycarbonate resin.

(UV absorber)
The polycarbonate resin used in the present invention can contain an ultraviolet absorber. Examples of UV absorbers include benzotriazole UV absorbers, benzophenone UV absorbers, triazine UV absorbers, cyclic imino ester UV absorbers, and cyanoacrylate UV absorbers. Among them, benzotriazole UV absorbers Agents are preferred.

Examples of the benzotriazole ultraviolet absorber include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-5′-tert-butylphenyl) benzotriazole, 2- (2 '-Hydroxy-5'-tert-octylphenyl) benzotriazole, 2- (2'-hydroxy-3', 5'-di-tert-butylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di-tert-amylphenyl) benzotriazole, 2- (2'-hydroxy-3'-dodecyl-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-bis (Α, α′-dimethylbenzyl) phenylbenzotriazole, 2- [2′-hydroxy-3 ′-(3 ″, 4 ″, 5 ″, 6 ″ -tetraphthalimidome) Til) -5′-methylphenyl] benzotriazole, 2- (2′-hydroxy-3′-tert-butyl-5′-methylphenyl) -5-chlorobenzotriazole, 2- (2′-hydroxy-3 ′) , 5'-di-tert-butylphenyl) -5-chlorobenzotriazole, 2,2'methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2H-benzotriazole-2- Yl) phenol], methyl-3- [3-tert-butyl-5- (2H-benzotriazol-2-yl) -4-hydroxyphenylpropionate-benzotriazole ultraviolet rays typified by condensation products with polyethylene glycol An absorbent can be mentioned.
The blending ratio of the ultraviolet absorber is preferably 0.01 to 2 parts by weight, more preferably 0.1 to 1 part by weight, still more preferably 0.2 to 0.5 parts by weight with respect to 100 parts by weight of the polycarbonate resin. It is.

(Light stabilizer)
The polycarbonate resin used in the present invention can contain a light stabilizer. When a light stabilizer is included, there is an advantage that it is favorable in terms of weather resistance and cracks are hardly formed in the molded product.
Examples of the light stabilizer include 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, didecanoic acid bis (2,2,6,6-tetramethyl-1-octyloxy-4-piperidinyl) ester, Bis (1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] methyl] butyl malonate, 2,4- Bis [N-butyl-N- (1-cyclohexyloxy-2,2,6,6-tetramethylpiperidin-2-yl) amino] -6- (2-hydroxyethylamine) -1,3,5-triazine, Bis (1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, methyl (1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, bis (2, , 6,6-tetramethyl-4-piperidyl) carbonate, bis (2,2,6,6-tetramethyl-4-piperidyl) succinate, bis (2,2,6,6-tetramethyl-4-) Piperidyl) sebacate, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 4-octanoyloxy-2,2,6,6-tetramethylpiperidine, bis (2,2,6,6-tetra Methyl-4-piperidyl) diphenylmethane-p, p'-dicabamate, bis (2,2,6,6-tetramethyl-4-piperidyl) benzene-1,3-disulfonate, bis (2,2,6 , 6-tetramethyl-4-piperidyl) phenyl phosphite, hindered amines, nickel bis (octylphenyl sulfide, nickel complex-3,5-di Examples include nickel complexes such as t-butyl-4-hydroxybenzyl phosphate monoethylate, nickel dibutyldithiocarbamate, etc. These light stabilizers may be used alone or in combination of two or more. Is preferably 0.001 to 1 part by weight, more preferably 0.01 to 0.5 part by weight based on 100 parts by weight of the polycarbonate resin.

(Epoxy stabilizer)
In order to improve hydrolyzability, an epoxy compound can be blended with the polycarbonate resin used in the present invention within a range not impairing the object of the present invention.
Epoxy stabilizers include epoxidized soybean oil, epoxidized linseed oil, phenyl glycidyl ether, allyl glycidyl ether, t-butylphenyl glycidyl ether, 3,4-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexyl carboxylate 3,4-epoxy-6-methylcyclohexylmethyl-3 ′, 4′-epoxy-6′-methylcyclohexylcarboxylate, 2,3-epoxycyclohexylmethyl-3 ′, 4′-epoxycyclohexylcarboxylate, 4- (3,4-epoxy-5-methylcyclohexyl) butyl-3 ′, 4′-epoxycyclohexylcarboxylate, 3,4-epoxycyclohexylethylene oxide, cyclohexylmethyl-3,4-epoxycyclohexylcarboxylate 3,4-epoxy-6-methylcyclohexylmethyl-6′-methylsiloxycarboxylate, bisphenol A diglycidyl ether, tetrabromobisphenol A glycidyl ether, diglycidyl ester of phthalic acid, diglycidyl ester of hexahydrophthalic acid, Bis-epoxy dicyclopentadienyl ether, bis-epoxy ethylene glycol, bis-epoxy cyclohexyl adipate, butadiene diepoxide, tetraphenylethylene epoxide, octyl epoxy tarate, epoxidized polybutadiene, 3,4-dimethyl-1,2- Epoxycyclohexane, 3,5-dimethyl-1,2-epoxycyclohexane, 3-methyl-5-t-butyl-1,2-epoxycyclohexane, octadecyl-2,2- Methyl-3,4-epoxycyclohexylcarboxylate, N-butyl-2,2-dimethyl-3,4-epoxycyclohexylcarboxylate, cyclohexyl-2-methyl-3,4-epoxycyclohexylcarboxylate, N-butyl-2 -Isopropyl-3,4-epoxy-5-methylcyclohexyl carboxylate, octadecyl-3,4-epoxycyclohexyl carboxylate, 2-ethylhexyl-3 ', 4'-epoxycyclohexyl carboxylate, 4,6-dimethyl-2, 3-epoxycyclohexyl-3 ′, 4′-epoxycyclohexylcarboxylate, 4,5-epoxytetrahydrophthalic anhydride, 3-t-butyl-4,5-epoxytetrahydrophthalic anhydride, diethyl-4,5-epoxy Cis , 2-cyclohexyl dicarboxylate, di -n- butyl -3-t-butyl-4,5-epoxy - such as cis-1,2-cyclohexyl dicarboxylate, and the like. Bisphenol A diglycidyl ether is preferable from the viewpoint of compatibility.
Such an epoxy stabilizer is preferably 0.0001 to 5 parts by weight, more preferably 0.001 to 1 part by weight, and still more preferably 0.005 to 0.5 parts by weight with respect to 100 parts by weight of the polycarbonate resin. In the range of parts.

(Bluing agent)
The polycarbonate resin used in the present invention can be blended with a bluing agent in order to counteract the yellowishness of the lens based on the polymer or the UV absorber. Any bluing agent can be used without any problem as long as it is used for polycarbonate. In general, anthraquinone dyes are preferred because they are readily available.

As a specific bluing agent, for example, the general name Solvent Violet 13 [CA. No (color index No) 60725], generic name Solvent Violet 31 [CA. No 68210, generic name Solvent Violet 33 [CA. No. 60725], generic name Solvent Blue 94 [CA. No 61500], generic name Solvent Violet 36 [CA. No. 68210], common name Solvent Blue 97 [manufactured by Bayer, "Macrolex Violet RR"] and general name Solvent Blue 45 [CA. No. 61110] is given as a representative example.
These bluing agents may be used individually by 1 type, and may use 2 or more types together. These bluing agents are preferably blended at a ratio of 0.1 × 10 ⁻⁴ to 2 × 10 ⁻⁴ parts by weight with respect to 100 parts by weight of the polycarbonate resin.

(Flame retardants)
A flame retardant can also be blended with the polycarbonate resin used in the present invention. Flame retardants include brominated epoxy resins, brominated polystyrenes, brominated polycarbonates, brominated polyacrylates, halogenated flame retardants such as chlorinated polyethylene, phosphate ester flame retardants such as monophosphate compounds and phosphate oligomer compounds, Organic phosphorus flame retardants other than phosphate ester flame retardants such as phosphinate compounds, phosphonate compounds, phosphonitrile oligomer compounds, phosphonic acid amide compounds, organic sulfonate alkali (earth) metal salts, borate metal salt flame retardants, And organic metal salt flame retardants such as metal stannate flame retardants, silicone flame retardants, ammonium polyphosphate flame retardants, and triazine flame retardants. Separately, a flame retardant aid (for example, sodium antimonate, antimony trioxide, etc.), an anti-drip agent (polytetrafluoroethylene having fibril-forming ability, etc.), etc. may be blended and used together with the flame retardant.

Among the above-mentioned flame retardants, compounds that do not contain chlorine and bromine atoms have reduced features that are undesirable when performing incineration and thermal recycling. It is more suitable as a flame retardant in the molded article of the present invention.
When a flame retardant is blended, the range of 0.05 to 50 parts by weight per 100 parts by weight of the polycarbonate resin is preferable. When 0.05 part by weight or more, sufficient flame retardancy is exhibited, and when it is 50 parts by weight or less, the strength and heat resistance of the molded product are excellent.

(Acrylic resin (B))
As the acrylic resin used in the present invention, an acrylic resin as a thermoplastic resin is used. The following compounds are mentioned as a monomer used for acrylic resin. For example, methyl methacrylate, methacrylic acid, acrylic acid, benzyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, Lauryl (meth) acrylate, tridecyl (meth) acrylate, stearyl (meth) acrylate, glycidyl (meth) acrylate, hydroxypropyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, 2-ethoxyethyl (meth) acrylate, cyclohexyl (Meth) acrylate, isobornyl (meth) acrylate, norbornyl (meth) acrylate, dicyclopentenyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopenteni Oxyethyl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, acrylic (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2- (meth) acryloyloxyethyl succinate, 2- (meth) acryloyl maleate Oxyethyl, 2- (meth) acryloyloxyethyl phthalate, 2- (meth) acryloyloxyethyl hexahydrophthalate, pentamethylpiperidyl (meth) acrylate, tetramethylpiperidyl (meth) acrylate, dimethylaminoethyl (meta ) Acrylate, diethylaminoethyl (meth) acrylate, cyclopentyl methacrylate, cyclopentyl acrylate, cyclohexyl methacrylate, cyclohexyl acrylate, cycloheptyl methacrylate, cycl Heptyl acrylate, cyclooctyl methacrylate, cyclooctyl acrylate, cyclododecyl methacrylate, cyclododecyl acrylate, and the like. These may be used by polymerizing alone or in combination of two or more.

These may be used by polymerizing alone or in combination of two or more. In particular, it is preferable to contain methyl methacrylate and methyl acrylate. As the monomer component, it is preferable to contain 50 to 99 mol% methyl methacrylate and 1 to 50 mol% methyl acrylate, more preferably 60 to 99 mol% methyl methacrylate and 1 to 40 mol% methyl acrylate. More preferably, it contains 70 to 99 mol% of methyl acid and 1 to 30 mol% of methyl acrylate. When the amount of methyl methacrylate is more than 99 mol% as the monomer component, the heat decomposability is inferior, and a molding defect such as silver occurs at the time of molding, which is not preferable. As a monomer component, when methyl methacrylate is smaller than 50 mol%, the heat distortion temperature is lowered, which is not preferable. Further, other monomers that can be polymerized with these acrylic monomers, for example, polyolefin monomers, vinyl monomers and the like may be used in an amount of 0 to 30% by weight.
The molecular weight of the acrylic resin is not particularly limited, but if the weight average molecular weight is in the range of 30,000 or more and 300,000 or less, appearance defects such as flow unevenness may occur when molding as a multilayer body. The multilayer body excellent in mechanical properties and heat resistance can be provided.

The acrylic resin used in the present invention preferably has a specific viscosity in the range of 0.12 to 0.55. A specific viscosity of less than 0.12 is not preferable because the molded product becomes brittle. A specific viscosity higher than 0.55 is not preferable because the melt viscosity of the resin is increased and the moldability is deteriorated.
Moreover, the glass transition temperature (Tg) of the acrylic resin used for this invention becomes like this. Preferably it is 100-140 degreeC, More preferably, it is 105-135 degreeC. When the Tg is 100 to 140 ° C., the heat stability and moldability are good when used as an optical molded product, which is preferable.
The glass transition temperature (Tg) is measured at 29 ° C./min using a 2910 type DSC manufactured by TA Instruments Japan.
Furthermore, you may add various additives, such as a general heat stabilizer, a ultraviolet absorber, a light-resistant stabilizer, a coloring agent, a mold release agent, a lubricant, an antistatic agent, and a matting agent, to this acrylic resin.

(Elastic polymer)
In the polycarbonate resin and acrylic resin used in the present invention, an elastic polymer can be used as an impact modifier. Examples of the elastic polymer include natural rubber or rubber having a glass transition temperature of 10 ° C. or less. As a component, a graft copolymer obtained by copolymerizing one or more monomers selected from aromatic vinyl, vinyl cyanide, acrylic acid ester, methacrylic acid ester, and a vinyl compound copolymerizable therewith. Can be mentioned. A more preferable elastic polymer is a core-shell type graft copolymer in which one or more shells of the above-mentioned monomer are graft-copolymerized on the core of the rubber component.

  Moreover, the rubber component and the block copolymer of the said monomer are also mentioned. Specific examples of such block copolymers include thermoplastic elastomers such as styrene / ethylenepropylene / styrene elastomers (hydrogenated styrene / isoprene / styrene elastomers) and hydrogenated styrene / butadiene / styrene elastomers. Furthermore, various elastic polymers known as other thermoplastic elastomers such as polyurethane elastomers, polyester elastomers, polyether amide elastomers and the like can also be used.

  A core-shell type graft copolymer is more suitable as an impact modifier. In the core-shell type graft copolymer, the core particle size is preferably 0.05 to 0.8 μm, more preferably 0.1 to 0.6 μm, and more preferably 0.1 to 0.5 μm in weight average particle size. Is more preferable. If it is in the range of 0.05 to 0.8 μm, better impact resistance is achieved. The elastic polymer preferably contains 40% or more of a rubber component, and more preferably contains 60% or more.

  Rubber components include butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, acrylic-silicone composite rubber, isobutylene-silicone composite rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, nitrile rubber, ethylene- Acrylic rubber, silicone rubber, epichlorohydrin rubber, fluororubber, and those in which hydrogen is added to these unsaturated bonds may include halogen atoms because of concerns about the generation of harmful substances during combustion. No rubber component is preferable in terms of environmental load.

  The glass transition temperature of the rubber component is preferably −10 ° C. or lower, more preferably −30 ° C. or lower. As the rubber component, butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, and acrylic-silicone composite rubber are particularly preferable. The composite rubber is a rubber obtained by copolymerizing two kinds of rubber components or a rubber polymerized so as to have an IPN structure entangled with each other so as not to be separated.

  Examples of the aromatic vinyl in the vinyl compound copolymerized with the rubber component include styrene, α-methylstyrene, p-methylstyrene, alkoxystyrene, halogenated styrene and the like, and styrene is particularly preferable. Examples of acrylic esters include methyl acrylate, ethyl acrylate, butyl acrylate, cyclohexyl acrylate, octyl acrylate, etc., and examples of methacrylic esters include methyl methacrylate, ethyl methacrylate, methacrylic acid. Examples thereof include butyl, cyclohexyl methacrylate, octyl methacrylate and the like, and methyl methacrylate is particularly preferable. Among these, it is particularly preferable to contain a methacrylic acid ester such as methyl methacrylate as an essential component. More specifically, the methacrylic acid ester is contained in 100% by weight of the graft component (in the case of 100% by weight of the shell in the case of the core-shell type polymer), preferably 10% by weight or more, more preferably 15% by weight or more. Is done.

  The elastic polymer containing a rubber component having a glass transition temperature of 10 ° C. or less may be produced by any polymerization method including bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. It can be a single-stage graft or a multi-stage graft. Moreover, the mixture with the copolymer of only the graft component byproduced in the case of manufacture may be sufficient. Furthermore, examples of the polymerization method include a general emulsion polymerization method, a soap-free polymerization method using an initiator such as potassium persulfate, a seed polymerization method, and a two-stage swelling polymerization method. In the suspension polymerization method, the aqueous phase and the monomer phase are individually maintained, both are accurately supplied to the continuous disperser, and the particle diameter is controlled by the rotation speed of the disperser, and the continuous production is performed. In the method, a method may be used in which the monomer phase is supplied by passing it through a fine orifice having a diameter of several to several tens of μm or a porous filter in an aqueous liquid having dispersibility to control the particle size. In the case of a core-shell type graft polymer, the reaction may be one stage or multistage for both the core and the shell.

  Such elastic polymers are commercially available and can be easily obtained. For example, as rubber components mainly composed of butadiene rubber, acrylic rubber or butadiene-acrylic composite rubber, Kane Ace B series (for example, B-56 etc.) of Kanegafuchi Chemical Industry Co., Ltd. and Metabrene of Mitsubishi Rayon Co., Ltd. C series (for example, C-223A), W series (for example, W-450A), paraloid EXL series (for example, EXL-2602) by Kureha Chemical Industry, HIA series (for example, HIA-15), BTA series (E.g., BTA-III), KCA series, Rohm and Haas Paraloid EXL series, KM series (e.g., KM-336P, KM-357P, etc.) and UCL modifier resin series (UMG)・ ABS's MG AXS Resin Series) and the like, and those mainly composed of acrylic-silicone composite rubber as the rubber component are those commercially available from Mitsubishi Rayon Co., Ltd. under the trade name Methbrene S-2001 or SRK-200. It is done.

  The composition ratio of the impact modifier is preferably 0.2 to 50 parts by weight, more preferably 1 to 30 parts by weight, and more preferably 1.5 to 20 parts by weight per 100 parts by weight of the polycarbonate resin or 100 parts by weight of the acrylic resin. Such a composition range can give good impact resistance to the composition while suppressing a decrease in rigidity.

<Multilayer body>
The multilayer body of the present invention can be widely used as a molded product such as a film, a sheet, or a plate. As a method for forming the multilayer body, a known method such as coextrusion, extrusion lamination, heat lamination, dry lamination, or the like can be used. Among these, it is particularly preferable to use a coextrusion method.
In the case of coextrusion, the resin and the additives constituting each layer of the multilayer body are combined with the resin through a feed block or a multi-manifold die using a plurality of extruders to form the multilayer body. In order to further improve the strength and impact resistance of the multilayer body, the multilayer body obtained in the above step can be stretched uniaxially or biaxially by a roll method, a tenter method, a tubular method or the like.

  In the multilayer body of the present invention, the total thickness is preferably 0.03 to 300 mm, more preferably 0.05 to 100 mm, further preferably 0.1 to 10 mm, and particularly preferably 0.5 to 3 mm. The ratio of the layer containing the polycarbonate resin (A) to the total thickness of all the layers of the multilayer body is preferably 5 to 50%, more preferably 10 to 45%, and 15 to 40%. Is more preferable. If the thickness of the layer containing the polycarbonate resin (A) is within such a range, it is possible to provide a multilayer body having excellent surface hardness and heat resistance and also having excellent chemical resistance.

  The multilayer body of the present invention formed as a film, sheet, or plate has excellent transparency, chemical resistance, and heat resistance, and has excellent UV discoloration resistance and surface hardness. Therefore, the use of the multilayer body of the present invention is not particularly limited. For example, building materials, interior parts, transparent sheets such as display covers, sheets for resin-coated metal plates, molding (vacuum / pressure forming, hot press molding) Etc.), a colored plate, a transparent plate, a shrink film, a shrink label, a shrink tube, an automobile interior material, a resin glazing, a household appliance member, an OA equipment member, and the like.

(surface treatment)
Various surface treatments can be performed on the multilayer body of the present invention. Surface treatment here refers to a new layer on the surface of resin molded products such as vapor deposition (physical vapor deposition, chemical vapor deposition, etc.), plating (electroplating, electroless plating, hot dipping, etc.), painting, coating, printing, etc. A method usually used can be applied. Specific examples of the surface treatment include various surface treatments such as hard coat, water / oil repellent coat, ultraviolet absorption coat, infrared absorption coat, and metalizing (evaporation). Hard coat is a particularly preferred and required surface treatment.

  EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to this. In the examples, “parts” means “parts by weight”. The resins used and the evaluation methods used in the examples are as follows.

1. Polymer composition ratio (NMR)
Each repeating unit was measured by proton NMR of JNM-AL400 manufactured by JEOL Ltd., and the polymer composition ratio (molar ratio) was calculated.

2. Specific viscosity The viscosity was determined using an Ostwald viscometer from a solution of 0.7 g of polycarbonate resin in 100 ml of methylene chloride at 20 ° C.
Specific viscosity (η _SP ) = (t−t ₀ ) / t ₀
[T ₀ is methylene chloride falling seconds, t is sample solution falling seconds]

3. Glass transition temperature (Tg)
Under a nitrogen atmosphere (nitrogen flow rate: 40 ml / min) in accordance with JIS K7121, using a thermal analysis system DSC-2910 manufactured by TA Instruments, using 8 mg of polycarbonate resin or acrylic resin The temperature elevation rate was measured under the condition of 20 ° C./min.

4). Pencil hardness Based on JIS K5400, a state where a load of 750 g is applied to the surface of the first layer of the multilayer body sample cut to 80 mm × 60 mm in a temperature-controlled room at an ambient temperature of 23 ° C. while maintaining a 45 ° angle. A line was drawn and the surface condition was visually evaluated.

5. Adhesiveness The surface of the first layer of the multilayer sample is cut with 11 cutters at 1 mm intervals vertically and horizontally on the surface of the first layer to make 100 squares, and the cello tape (registered trademark) (Nichiban Co., Ltd. adhesive) After affixing (tape), it peeled at a stretch in the direction of 90 degrees. The first layer did not peel off, and the number of remaining squares was counted.

6). Chemical resistance With reference to Non-Patent Document 1, a commercially available tan cream (Mentholatum Skin Aqua SPF27, manufactured by Rohto Pharmaceutical Co., Ltd.) is uniformly applied to the film surface, heat treated at 80 ° C. for 2 hours, The film surface appearance after wiping off was visually confirmed.
○: Wipe cleanly, no effect ×: Difficult to wipe or whitening

[Polycarbonate resin (A)]
PC1 (Example):
Structural unit derived from isosorbide (hereinafter ISS) / 3,9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro (5,5) undecane (hereinafter SPG) -Derived structural unit = 32/68 (mol%), specific viscosity 0.344
PC2 (Example):
Structural unit derived from ISS / Structural unit derived from SPG = 70/30 (mol%), specific viscosity 0.399
PC3 (Example):
Structural unit derived from ISS / Structural unit derived from SPG / 1,9-nonanediol (hereinafter ND) = 75/15/10 (mol%), specific viscosity 0.362
PC4 (Example):
Structural unit derived from ISS / Structural unit derived from SPG / 1 Structural unit derived from 1,4-cyclohexanedimethanol (hereinafter CHDM) = 60/20/20 (mol%), specific viscosity 0.341
PC5 (Example):
Structural unit derived from ISS / Structural unit derived from SPG / 1,9-nonanediol (hereinafter referred to as ND) = 85/5/10 (mol%), specific viscosity 0.372
PC6 (comparative example):
Structural unit derived from ISS / Structural unit derived from CHDM = 70/30 (mol%), specific viscosity 0.361
PC7 (comparative example):
Structural unit derived from ISS / Structural unit derived from CHDM = 50/50 (mol%), specific viscosity 0.367
PC8 (comparative example):
Structural unit derived from ISS / Structural unit derived from ND = 88/12 (mol%), specific viscosity 0.321
PC9 (comparative example):
Structural unit derived from ISS / Structural unit derived from SPG = 20/80 (mol%), specific viscosity 0.397
PC10 (comparative example):
Teijin Chemicals Limited, trade name: Panlite Viscosity average molecular weight = 25,000

[acrylic resin]
PMMA1 (Example):
Mitsubishi Rayon Acrypet VH-001

[Example 1]
<Manufacture of polycarbonate resin A>
164 parts of isosorbide (hereinafter abbreviated as ISS), 3,9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro (5,5) undecane (hereinafter abbreviated as SPG) ) 724 parts, diphenyl carbonate (hereinafter abbreviated as DPC) 750 parts, and tetramethylammonium hydroxide 0.8 × 10 ⁻² parts and barium stearate 0.6 × 10 ⁻⁴ parts as a catalyst at 200 ° C. in a nitrogen atmosphere. Heated and melted. Thereafter, the temperature was raised to 220 ° C. over 30 minutes and the degree of vacuum was adjusted to 20.0 kPa. Thereafter, the temperature was raised to 240 ° C. over 30 minutes and the degree of vacuum was adjusted to 10 kPa. After maintaining at that temperature for 10 minutes, the degree of vacuum was set to 133 Pa or less over 1 hour. After the completion of the reaction, the mixture was discharged from the bottom of the reaction tank under nitrogen pressure, and cut with a pelletizer while cooling in a water tank to obtain a pellet (PC1). Various evaluation was performed about the obtained pellet. The evaluation results are shown in Table 1.

<Manufacture of laminates>
Acrylic resin (B): manufactured by Mitsubishi Rayon Co., Ltd., trade name Acrypet VH-001 (PMMA1) is a single screw extruder having a screw diameter of 40 mm, and is a polycarbonate that forms the polycarbonate resin (A) layer prepared by the above production method. The resin is melted with a single screw extruder having a screw diameter of 30 mm and laminated in two layers and three layers by the multi-manifold method. The set temperature is 250 ° C. for the acrylic resin (B) and the set temperature is 230 for the polycarbonate resin (A). The sheet was extruded through a T-die at 0 ° C., and the resulting sheet was cooled with a mirror-finished roll to obtain a laminate in which the polycarbonate resin (A) was laminated on both sides of the acrylic resin (B). At this time, the thickness of each layer is as follows: first layer (polycarbonate resin (A) layer) / second layer (acrylic resin (B) layer) / third layer (polycarbonate resin (A) layer) = 0.1 The amount of molten resin discharged was adjusted to be /1.0/0.1 (mm). Various evaluation results of the obtained laminate are shown in Table 1.

[Example 2]
<Manufacture of polycarbonate resin>
Except that ISS 358 parts, SPG 319 parts, and DPC 750 parts were used as raw materials, the same operation as in Example 1 was performed and the same evaluation was performed (PC2). The results are shown in Table 1.
<Manufacture of laminates>
The polycarbonate resin (A) was subjected to the same evaluation as in Example 1 except that the polycarbonate resin (A) was extruded through a T-shaped die having a set temperature of 250 ° C. The results are shown in Table 1.

[Example 3]
Except that ISS 384 parts, SPG 160 parts, ND 56 parts, and DPC 750 parts were used as raw materials, the same operation as in Example 1 was performed and the same evaluation was performed (PC3). The results are shown in Table 1.
<Manufacture of laminates>
The polycarbonate resin (A) is extruded through a T-shaped die having a set temperature of 240 ° C., and is laminated into two types and two layers by the multi-manifold method. The first layer (polycarbonate resin (A) layer) / second layer (acrylic) Resin (B) layer) = 0.1 / 1.0 (mm) Except that the discharge amount of the molten resin was adjusted, the same operation as in Example 1 was performed and the same evaluation was performed. The results are shown in Table 1.

[Example 4]
Except that ISS 307 parts, SPG 213 parts, CHDM 101 parts, and DPC 750 parts were used as raw materials, the same operation as in Example 1 was performed, and the same evaluation was performed (PC4). The results are shown in Table 1.
<Manufacture of laminates>
The same operation as in Example 3 was performed, and the same evaluation was performed. The results are shown in Table 1.

[Example 5]
Except for using ISS 435 parts, SPG 53 parts, ND 56 parts, and DPC 750 parts as raw materials, the same operation as in Example 1 was performed and the same evaluation was performed (PC5). The results are shown in Table 1.
<Manufacture of laminates>
The same operation as in Example 3 was performed, and the same evaluation was performed. The results are shown in Table 1.

[Comparative Example 1]
<Manufacture of polycarbonate resin>
Except that ISS 358 parts, CHDM 151 parts, and DPC 750 parts were used as raw materials, the same operation as in Example 1 was performed, and the same evaluation was performed (PC6). The results are shown in Table 1.

<Manufacture of polycarbonate resin laminate>
The polycarbonate resin forming the polycarbonate resin (A) layer produced by the above production method is a single screw extruder having a screw diameter of 40 mm, and acrylic resin (B): manufactured by Mitsubishi Rayon Co., Ltd., trade name Acrypet VH-001 (PMMA1). ) Are melted by a single screw extruder having a screw diameter of 30 mm and laminated in two layers and three layers by a multi-manifold method. The set temperature is 250 ° C. for the acrylic resin (B) and the set temperature is 230 for the polycarbonate resin (A). The sheet was extruded through a T-die at 0 ° C., and the resulting sheet was cooled with a mirror-finished roll to obtain a laminate in which an acrylic resin (B) was laminated on both sides of a polycarbonate resin (A). At this time, the thickness of each layer is as follows: first layer (acrylic resin (B) layer) / second layer (polycarbonate resin (A) layer) / third layer (acrylic resin (B) layer) = 0.1 The amount of molten resin discharged was adjusted to be /1.0/0.1 (mm). Various evaluation results of the obtained laminate are shown in Table 1. The resulting laminate had low interlayer adhesion, poor chemical resistance, and could not achieve its original purpose.

[Comparative Example 2]
<Manufacture of laminates>
Except that PC6 was used as the polycarbonate resin (A), the same operation as in Example 3 was performed, and the same evaluation was performed. The results are shown in Table 1. The obtained laminate had low interlayer adhesion, and the original purpose could not be achieved.

[Comparative Example 3]
<Manufacture of polycarbonate resin>
Except for using ISS 256 parts, CHDM 252 parts, and DPC 750 parts as raw materials, the same operation as in Example 1 was performed, and the same evaluation was performed (PC7). The results are shown in Table 1.
<Manufacture of laminates>
Except that PC7 was used as the polycarbonate resin (A), the same operation as in Example 3 was performed, and the same evaluation was performed. The results are shown in Table 1. The obtained laminate had low adhesion between the resins and was inferior in chemical resistance, and the original purpose could not be achieved.

[Comparative Example 4]
<Manufacture of polycarbonate resin>
Except for using 450 parts of ISS, 67 parts of ND, and 750 parts of DPC as raw materials, the same evaluation as in Example 1 was performed (PC8). The results are shown in Table 1.
<Manufacture of laminates>
Except that PC8 was used as the polycarbonate resin (A), the same operation as in Example 3 was performed, and the same evaluation was performed. The results are shown in Table 1. The obtained laminate had low interlayer adhesion, and the original purpose could not be achieved.

[Comparative Example 5]
<Manufacture of polycarbonate resin>
Except for using 102 parts of ISS, 851 parts of SPG, and 750 parts of DPC as raw materials, the same operation as in Example 1 was performed and the same evaluation was performed (PC9). The results are shown in Table 1.
<Manufacture of laminates>
The polycarbonate resin (A) was subjected to the same evaluation as in Example 1 except that the polycarbonate resin (A) was extruded through a T-shaped die having a set temperature of 250 ° C. The results are shown in Table 1. The obtained laminate was inferior in chemical resistance and could not achieve the original purpose.

[Comparative Example 6]
<Manufacture of laminates>
For the polycarbonate resin (A), the same operation as in Example 3 was performed except that Teijin Chemicals Ltd. product name: Panlite (PC10) was used and extruded through a T-shaped die with a set temperature of 300 ° C. Similar evaluations were made. The obtained laminate had a low surface hardness and poor chemical resistance, and the original purpose could not be achieved.

  The multilayer body of the present invention comprises a building material, an interior part, a transparent sheet such as a display cover, a sheet for a resin-coated metal plate, a sheet for molding (vacuum / pressure forming, hot press molding, etc.), a colored plate, a transparent plate, a shrink film, It is useful as a shrink label, shrink tube, automobile interior material, resin glazing, home appliance product member, OA equipment member.

Claims (7)

The main repeating unit is the following formula (a-1)

Unit (a-1) represented by the following formula (a-2)

Wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, and R has a branched or straight chain alkyl group having 1 to 20 carbon atoms or a substituent. Represents a cycloalkyl group having 6 to 20 carbon atoms, and m represents an integer of 0 to 10.)
A polycarbonate having a molar ratio (a-1 / a-2) of units (a-1) to units (a-2) of 30/70 to 95/5 A multilayer body having at least one layer each including a resin (A) layer and an acrylic resin (B) layer.   2. The multilayer body according to claim 1, wherein the multilayer body includes at least one layer including the polycarbonate resin (A) as an outermost layer of the multilayer body and the layer including the acrylic resin (B) as an inner layer of the multilayer body.   The multilayer body according to claim 1, wherein the polycarbonate resin (A) has a glass transition temperature of 90C to 145C.   The multilayer body according to claim 1, wherein the surface hardness of the layer containing the polycarbonate resin (A) is F or more.   The multilayer body according to claim 1, wherein the acrylic resin (B) has a glass transition temperature of 100C to 140C.   The multilayer body according to claim 1, wherein the thickness of the layer containing the polycarbonate resin (A) is 5 to 50% of the total thickness of the multilayer body.   The multilayer body according to claim 1, wherein the total thickness of the multilayer body is 0.03 to 300 mm.