[0010] 以下針對用以實施本發明之形態(以下稱為「本實施形態」)詳細說明。以下之本實施形態係用以說明本發明之例示，並非意指將本發明限定於以下內容。本發明在其要旨之範圍內可實施適當變化。 又，本說明書中，源自單體(X)之構成聚合物之構成單位有時記載為「源自單體(X)之單體單位」。又，進一步簡述，則例如將源自甲基丙烯酸甲酯之單體單位記載為「甲基丙烯酸甲酯單體單位」，亦將源自丙烯酸烷酯之單體單位記載為「丙烯酸烷酯單體單位」。且，本說明書中，只要未特別說明，則所謂數值範圍「Y~Z」表示「Y以上Z以下」，所謂(甲基)丙烯酸表示甲基丙烯酸或丙烯酸。又，所謂(甲基)丙烯酸烷酯係以CH2
=CHCOOR(R為烷基)或CH2
=C(CH3
)COOR(R為烷基)表示之化合物。 [0011] (甲基丙烯酸聚合物(A)) 甲基丙烯酸聚合物(A)係含有源自甲基丙烯酸甲酯單體單位85~100質量%之聚合物。又，係與後述之交聯橡膠粒子(C)不同者。 [0012] 作為甲基丙烯酸聚合物(A)，舉例為例如僅由甲基丙烯酸甲酯單體單位所成之均聚物、由甲基丙烯酸甲酯單體單位與甲基丙烯酸甲酯以外之(甲基)丙烯酸烷酯單體單位所成之共聚物等，較好為由甲基丙烯酸甲酯單體單位與甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位所成之共聚物。該等可使用1種亦可併用2種以上。作為上述甲基丙烯酸甲酯以外之(甲基)丙烯酸烷酯舉例為丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸正丙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸第二丁酯、(甲基)丙烯酸2-乙基己酯等，較好為丙烯酸甲酯、(甲基)丙烯酸乙酯或(甲基)丙烯酸正丁酯，更好為丙烯酸甲酯或(甲基)丙烯酸乙酯。 [0013] 甲基丙烯酸聚合物(A)可為具有一種上述甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位之聚合物，亦可為具有2種以上該等單體單位之聚合物。且甲基丙烯酸聚合物(A)亦可為含有2種以上之上述甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位之種類互為不同之「甲基丙烯酸甲酯-(甲基)丙烯酸烷酯共聚物」之混合物。 [0014] 甲基丙烯酸甲酯單體單位之含量為85~100質量%，較好為87~99.5質量%，更好為89~99質量%。上述甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位之含量為0~15質量%，較好為0.5~13質量%，更好為1~11質量%。惟，上述甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位與甲基丙烯酸甲酯單體單位之合計量為100質量%。甲基丙烯酸甲酯單體單位之含量與上述甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位之含量在上述範圍時，可獲得耐熱性或機械強度優異之成形體。 [0015] 甲基丙烯酸聚合物(A)之含量可藉由將本實施形態之熱可塑性樹脂組成物溶解於丙酮時秤量可溶成分經再沉澱者(以下稱為丙酮可溶部)而求出。甲基丙烯酸聚合物(A)中之甲基丙烯酸甲酯單體單位之含量及甲基丙烯酸甲酯單體單位以外之(甲基)丙烯酸烷酯單體單位之含量可藉由利用熱分解氣相層析儀等分析丙酮可溶部而求得。 [0016] 用以獲得甲基丙烯酸聚合物(A)之聚合方法並未特別限定，但舉例為懸浮聚合、乳化聚合、塊狀聚合、溶液聚合等。 [0017] 甲基丙烯酸聚合物(A)可使用市售品，舉例為例如住友化學(股)製「SUMIPEX」、三菱縲縈(股)製「ACRYPET」、KURARAY(股)製「PARAPET」、旭化成(股)製「DURAPET」等。 [0018] 甲基丙烯酸聚合物(A)之熔融流動速率(MFR)較好為0.5~25g/10min，更好為1~8g/10min。又，MFR係基於JIS K 7218，於測定溫度230℃、荷重37.3N測定。 甲基丙烯酸聚合物(A)之MFR若在上述範圍，則可獲得耐溶劑性更優異之成形體，更可抑制成形時之翹曲。 [0019] (含環氧基之聚合物(B)) 含環氧基之聚合物(B)係含有源自含環氧基之(甲基)丙烯酸酯單體單位(以下稱為單體單位(b1))1~50質量%、與源自選自由乙烯、碳數3以上之α-烯烴及苯乙烯所成之群中之至少一種單體之單體單位(以下稱為單體單位(b2))50~99質量%之聚合物，基於耐溶劑性之觀點，較好為進而含有(甲基)丙烯酸烷酯單體單位(以下稱為單體單位(b3))之聚合物。此處，單體單位(b3)並不含環氧基之單體單位。又，所謂α-烯烴係於α位具有碳-碳雙鍵之烯烴。 [0020] 作為單體單位(b1)中之含環氧基之(甲基)丙烯酸酯舉例為(甲基)丙烯酸縮水甘油酯、(甲基)丙烯酸[(3,4-環氧基環己烷)-1-基]甲酯、(甲基)丙烯酸-3,4-環氧基丁酯、(甲基)丙烯酸-6,7-環氧基庚酯等，較好為(甲基)丙烯酸縮水甘油酯。含環氧基之聚合物(B)可為具有一種單體單位(b1)之聚合物，亦可為具有2種以上之聚合物，亦可為包含2種以上之單體單位(b1)之種類互為不同之聚合物的混合物。藉由含有單體單位(b1)，可獲得耐溶劑性更優異之成形體。 [0021] 單體單位(b1)之含量為1~50質量%，較好為1~30質量%，更好為1~20質量%。惟，單體單位(b1)與單體單位(b2)之單體單位合計量為100質量%。又，單體單位(b1)之含量可藉由利用NMR等分析而求得。 單體單位(b1)之含量為上述範圍時，可獲得耐溶劑性更優異之成形體。 [0022] 單體單位(b2)中之碳數3以上之α-烯烴舉例為丙烯、1-丁烯、1-己烯、1-辛烯等，較好為丙烯。 [0023] 單體單位(b2)中之單體較好為乙烯或丙烯，更好為乙烯。含環氧基之聚合物(B)可為具有一種單體單位(b2)之聚合物，亦可為具有2種以上之聚合物，亦可為含有2種以上之單體單位(b2)種類互為不同之聚合物的混合物。 [0024] 單體單位(b2)之含量為50~99質量%，較好為70~99質量%，更好為80~99質量%。惟，源自單體單位(b1)與單體單位(b2)之單體單位合計量為100質量%。又，單體單位(b2)之含量可藉由利用NMR等分析而求得。 單體單位(b2)之含量為上述範圍時，可獲得耐溶劑性更優異之成形體。 [0025] 單體單位(b3)中之(甲基)丙烯酸烷酯舉例為(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸正丙酯、(甲基)丙烯酸正丁酯、(甲基)丙烯酸第二丁酯、(甲基)丙烯酸2-乙基己酯等，較好為(甲基)丙烯酸甲酯或(甲基)丙烯酸乙酯，更好為(甲基)丙烯酸甲酯。含環氧基之聚合物(B)可為具有一種單體單位(b3)之聚合物，亦可為具有2種以上之聚合物，亦可為含有2種以上之單體單位(b3)種類互為不同之聚合物的混合物。 [0026] 含環氧基之聚合物(B)為進而含有單體單位(b3)之聚合物時，單體單位(b3)之含量較好為0.1~50質量%，更好為1~45質量%，又更好為3~40質量%。惟，單體單位(b1)與單體單位(b2)之合計量為100質量%。又，單體單位(b3)之含量為上述範圍時，可獲得耐溶劑性更優異之成形體。 [0027] 用以獲得含環氧基之聚合物(B)之聚合方法並未特別限定，舉例為例如高壓自由基聚合、溶液聚合、乳化聚合等之方法。且，亦可舉例藉由於聚乙烯、聚丙烯、聚苯乙烯、乙烯-α-烯烴共聚物、苯乙烯共聚物等之具有單體單位(b2)之聚合物中溶液混練或熔融混練含有環氧基之(甲基)丙烯酸酯而接枝聚合之方法。 [0028] 含環氧基之聚合物(B)可使用市售品，可使用例如住友化學(股)製「BOND FAST」等。 [0029] 熱可塑性樹脂組成物中所含之含環氧基之聚合物(B)之含量，相對於甲基丙烯酸聚合物(A) 100質量份，為0.1質量份以上100質量份以下，較好為0.3質量份以上50質量份以下，更好為0.5質量份以上20質量份以下。藉由使含環氧基之聚合物(B)含量為上述範圍，可獲得耐溶劑性更優異之成形體，且更可抑制成形時之翹曲。 [0030] 含環氧基之聚合物(B)之含量，可藉由將本實施形態之熱可塑性樹脂組成物溶解於丙酮時之不溶成分(以下稱為丙酮不溶部)中，溶解於甲苯時之可溶成分經再沉澱者(以下稱為「丙酮不溶部中之甲苯可溶部」)予以秤量而求出。 含環氧基之聚合物(B)中之單體單位(b1)之含量、單體單位(b2)之含量及單體單位(b3)之含量可藉由利用NMR等分析丙酮不溶部中之甲苯可溶部而求出。 [0031] (交聯橡膠粒子(C)) 交聯橡膠粒子(C)係包含具有源自選自由(甲基)丙烯酸烷酯、丁二烯、異戊二烯、氯丁二烯、苯乙烯、α-烷基苯乙烯、丙烯腈及甲基丙烯腈所成之群中之至少一種單體之單體單位與源自具有兩個以上碳-碳雙鍵之多官能單體之多官能單體單位之樹脂的橡膠粒子。 [0032] 作為(甲基)丙烯酸烷酯舉例為例如(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸異丙酯、(甲基)丙烯酸異丁酯、(甲基)丙烯酸第三丁酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸環己酯等。 作為α-烷基苯乙烯舉例為例如α-甲基苯乙烯、第三丁基苯乙烯等。 [0033] 作為具有兩個以上碳-碳雙鍵之多官能單體舉例為例如馬來酸二烯丙酯、(甲基)丙烯酸烯丙酯、二乙烯基苯、三乙烯基苯、烷二醇二(甲基)丙烯酸酯、三烯丙基異氰酸酯、聚乙二醇二(甲基)丙烯酸酯等。該等可僅使用1種，亦可使用2種以上。 [0034] 交聯橡膠粒子(C)可為單層橡膠粒子亦可為多層橡膠粒子。作為交聯橡膠粒子(C)較好為分別具有一層以上之軟質層及硬質層之兩層以上之橡膠粒子，由於有可抑制成形加工時之熱劣化或因加熱所致之橡膠粒子之變形、可提高成形體之耐熱性之傾向，故更好為分別具有一層以上之軟質層及硬質層之三層以上之有機橡膠粒子。 [0035] 分別具有一層以上之軟質層及硬質層之三層以上之有機橡膠粒子，較好為如圖1所示，自粒子中心朝向外側依序具有最內層4、中間層3及最外層2之構造。此處，最內層係存在於粒子之最中心之層，最外層係存在於距離粒子中心最遠之層。且中間層係存在於最內層與最外層之間的層，亦可具有2層以上。三層以上之有機橡膠粒子中，最內層及最外層可為軟質層亦可為硬質層，中間為可為軟質層亦可為硬質層，亦可為軟質層與硬質層之層合體。作為三層以上之有機橡膠粒子之構造，舉例為例如自粒子中心朝向外側依序具有軟質層-硬質層-軟質層-硬質層、軟質層-硬質層-硬質層、軟質層-軟質層-硬質層、硬質層-軟質層-硬質層、硬質層-硬質層-軟質層-硬質層、硬質層-軟質層-硬質層-硬質層之構造等，較好為自粒子中心朝向外側依序具有硬質層-軟質層-硬質層之三層構造、具有硬質層-硬質層-軟質層-硬質層之四層構造或具有硬質層-軟質層-硬質層-硬質層之四層構造。 作為三層以上之有機橡膠粒子較好係最內層及最外層為硬質層，中間層為軟質層之三層構造之有機橡膠粒子。藉由使最內層及最外層為硬質層，有抑制有機橡膠粒子變形之傾向，藉由中間層為軟層，有提高有機橡膠粒子之韌性之傾向。 [0036] 作為硬質層中所含之樹脂所具有之單體單位舉例為上述多官能單體單位、甲基丙烯酸甲酯單體單位、甲基丙烯酸乙酯單體單位、甲基丙烯酸正丙酯單體單位、甲基丙烯酸異丙酯單體單位、甲基丙烯酸正丁酯單體單位、甲基丙烯酸第二丁酯單體單位、甲基丙烯酸第三丁酯單體單位、甲基丙烯酸2-乙基己酯單體單位、甲基丙烯酸環己酯單體單位、α-甲基苯乙烯單體單位、第三丁基苯乙烯單體單位、丙烯腈單體單位、甲基丙烯腈單體單位等。該等可僅含1種，亦可使用2種以上。 形成硬質層作為最內層時，該硬質層所含之樹脂所具有之單體單位較好為上述多官能性單體單位及甲基丙烯酸甲酯單體單位或甲基丙烯酸乙酯單體單位。作為最內層而形成之硬質層中所含之上述多官能單體單位之含量較好為0.0001質量%以上10質量%以下。惟，作為最內層而形成之硬質層之樹脂所具有之全部單體單位之合計量為100質量%。形成硬質層作為最外層時，該硬質層所含之樹脂所具有之單體單位較好為甲基丙烯酸甲酯單體單位或甲基丙烯酸乙酯單體單位。 [0037] 作為軟質層中所含之樹脂所具有之單體單位舉例為上述多官能單體單位、丙烯酸正丁酯單體單位、丙烯酸2-乙基己酯單體單位等之碳數為4~11之丙烯酸烷酯單體單位、苯乙烯單體單位、異戊二烯單體單位、氯丁二烯單體單位等，較好為上述多官能單體單位、碳數為4~11之丙烯酸烷酯單體單位或苯乙烯單體單位，更好為上述多官能單體單位、丙烯酸正丁酯單體單位或苯乙烯單體單位。軟質層中所含樹脂所具有之上述多官能單體單位之含量較好為0.0001質量%以上10質量%以下。惟，軟質層所含之樹脂所具有之全部單體單位之合計量為100質量%。 [0038] 熱可塑性樹脂組成物所含之交聯橡膠粒子(C)之含量，相對於甲基丙烯酸聚合物(A) 100質量份，為0.001質量份以上25質量份以下，較好為0.5質量份以上24質量份以下，更好為1質量份以上23質量份以下，又更好為7質量份以上23質量份以下。藉由使交聯橡膠粒子(C)之含量為上述範圍，可獲得耐溶劑性及硬度更優異之成形體，且可抑制成形時之翹曲。又交聯橡膠粒子(C)之含量可藉由將本實施形態之熱可塑性樹脂組成物之丙酮不溶部中，溶解於甲苯時之不溶成分(以下稱為丙酮不溶部中之甲苯不溶部)予以秤量而求出。又，含有無機物之熱可塑性樹脂組成物時，自丙酮不溶部中之甲苯不溶部之量除去基於JIS K7250-1所求出之灰分量可求出交聯橡膠粒子(C)之含量。 [0039] 交聯橡膠粒子(C)之製造方法並未特別限定，可舉例為日本特開昭55-27576中記載之方法等。 [0040] 本實施形態之熱可塑性樹脂組成物係含有甲基丙烯酸聚合物(A)、含環氧基之聚合物(B)及交聯橡膠粒子(C)之組成物。 本實施形態之熱可塑性樹脂組成物含有丙酮不溶部。熱可塑性樹脂組成物之丙酮不溶部，相對於熱可塑性樹脂組成物100質量份，較好為5質量份以上25質量份以下，更好為6質量份以上24質量份以下，又更好為7質量份以上23質量份以下。丙酮不溶部為上述範圍時，可獲得耐溶劑性及硬度更優異之成形體。 [0041] 本實施形態之熱可塑性樹脂組成物，在不損及本發明目的之範圍，可含有添加劑。作為添加劑舉例為抗氧化劑、紫外線吸收劑、無機填充劑、著色劑、難燃劑等，較好添加抗氧化劑、紫外線吸收劑、無機填充劑及著色劑。 [0042] 作為抗氧化劑並未特別限定，但舉例為受阻酚系抗氧化劑或磷系抗氧化劑。具體而言，舉例為季戊四醇-肆[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]、6-[3-(3-第三丁基-4-羥基-5-甲基苯基)丙氧基]-2,4,8,10-四-第三丁基苯并[d,f][1,3,2]二氧雜磷雜環庚烯、亞磷酸參(2,4-二-第三丁基苯基)酯、硫二伸乙基[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]、十八烷基-3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯、N,N-己烷-1,6-二基雙[3-(3,5-二-第三丁基-4-羥基苯基)丙醯胺]、3,3’,3”,5,5’,5”-六-第三丁基-a,a’,a”-(均三甲苯-2,4,6-三基)三-對-甲酚、4,6-雙(辛硫基甲基)-鄰-甲酚、4,6-雙(十二烷硫基甲基)-鄰-甲酚、伸乙基雙(氧伸乙基)雙[3-(5-第三丁基-4-羥基-間-甲苯基)丙酸酯]、六伸乙基雙[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]、1,3,5-參(3,5-二-第三丁基-4-羥基苄基)-1,3,5-三嗪-2,4,6 (1H,3H,5H)-三酮、1,3,5-參[(4-第三丁基-3-羥基-2,6-二甲苯)甲基]-1,3,5-三嗪-2,4,6(1H,3H,5H)-三酮、2,6-二-第三丁基-4-(4,6-雙(辛硫基)-1,3,5-三嗪-2-基胺)苯酚等，較好為季戊四醇-肆[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]或6-[3-(3-第三丁基-4-羥基-5-甲基苯基)丙氧基]-2,4,8,10-四-第三丁基苯并[d,f][1,3,2]二氧雜磷雜環庚烯。該等可使用一種，亦可併用兩種以上。 作為抗氧化劑之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上5質量份以下，更好為0.001質量份以上1質量份以下。 [0043] 作為紫外線吸收劑並未特別限定，舉例為例如2,2’-亞甲基雙[6-(2H-苯并三唑-2-基)-4-(1,1,3,3-四甲基丁基)苯酚]、2,4-二-第三丁基苯基-3’,5’-二-第三丁基-4’-羥基苯甲酸酯、雙(2,2,6,6-四甲基-4-哌啶基)癸二酸酯、肆(1,2,2,6,6-五甲基-4-哌啶基)1,2,3,4-丁烷四羧酸酯等。該等可使用一種，亦可併用兩種以上。 作為紫外線吸收劑之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上5質量份以下，更好為0.001質量份以上1質量份以下。 [0044] 作為無機填充劑並未特別限定，舉例為例如玻璃纖維、碳纖維、矽酸鈣纖維、鈦酸鉀纖維、硼酸鋁纖維、片狀玻璃、滑石、高嶺土、雲母、水滑石、碳酸鈣、碳酸鋅、氧化鋅、二氧化鋅、磷酸氫鈣、矽灰石、氧化矽、沸石、氧化鋁、氧化氧化鋁、水軟鋁石、氫氧化鋁、氧化鈦、二氧化鈦、矽酸、氧化矽、二氧化矽、氧化鎂、二氧化鎂、矽酸鈣、鋁酸矽酸鈉、矽酸鎂、硫酸鋇、黃銅、銅、銀、鋁、鎳、鐵、氧化鐵、石墨、碳奈米管、氟化鈣、雲母、蒙脫土、膨潤性氟雲母、燐灰石等。該等無機填充劑亦可適當施以表面處理。且，該等無機填充劑可僅使用一種，亦可併用兩種以上。 無機填充劑之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上30質量份以下，更好為0.001質量份以上10質量份以下。 [0045] 作為著色劑並未特別限定，舉例為例如苝系染料、紫環酮(perinone)系染料、吡唑酮系染料、次甲基系染料、香豆素染料、喹酞酮系染料、喹啉系染料、蒽醌系染料、蒽醌系染料、蒽并吡啶酮系染料、硫靛藍系染料、香豆素系染料、異吲哚酮系顏料、二酮吡咯并吡咯系顏料、縮合偶氮系顏料、苯并咪唑酮系顏料、二噁嗪系顏料、銅酞青系顏料、喹吖酮系顏料、鎳錯合物系化合物、硬脂酸鋅、硬脂酸鎂、硬脂酸鈣、硬脂酸鋁、聚甲基倍半矽氧烷、鹵化銅酞青、伸乙基雙硬脂酸醯胺、群青、群青紫、科琴黑、乙炔黑、爐黑、碳黑、液態石蠟、矽油等。該等可使用一種，亦可併用兩種以上。 著色劑之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上5質量份以下，更好為0.001質量份以上1質量份以下。 [0046] 作為難燃劑並未特別限定，舉例為例如環狀氮化合物、磷系難燃劑、矽系難燃劑、籠狀倍半矽氧烷或其部分開裂構造體、氧化矽系難燃劑等。該等可使用一種，亦可併用兩種以上。 難燃劑之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上5質量份以下，更好為0.001質量份以上1質量份以下。 [0047] 本實施形態之熱可塑性樹脂組成物，在不損及本發明目的之範圍，亦可含有甲基丙烯酸聚合物(A)、含環氧基之聚合物(B)、交聯橡膠粒子(C)以外之樹脂。作為該等樹脂舉例為例如聚丙烯、聚乙烯、聚苯乙烯、ABS樹脂(丙烯腈-丁二烯-苯乙烯共聚物)、AS樹脂(丙烯腈-苯乙烯共聚物)、BAAS樹脂(丁二烯-丙烯腈-丙烯腈橡膠-苯乙烯共聚物)、MBS樹脂(甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物)、AAS樹脂(丙烯腈-丙烯腈橡膠-苯乙烯共聚物)、聚乳酸、聚碳酸酯、聚對苯二甲酸丁二酯、聚對苯二甲酸乙二酯、聚對苯二甲酸丙二酯、聚對苯二甲酸三亞甲基酯、聚萘二甲酸乙二酯等脂聚芳酸烷二酯系樹脂，聚四氟乙烯(四氟化乙烯樹脂、PTFE)、三氟化氯化乙烯樹脂(PCTFE)、四氟化乙烯六氟化乙烯丙烯樹脂(PFEP)、氟化乙烯樹脂(PVF)、偏氟化乙烯樹脂(PVDF)、二氟化二氯化乙烯樹脂、四氟乙烯-全氟烷基乙烯醚共聚物(PFA)、四氟乙烯-六氟丙烯共聚物、四氟乙烯-乙烯共聚物(ETFE)、聚偏氟化乙烯、聚氯三氟乙烯、氯三氟乙烯-乙烯共聚物(ECTFE)等之氟系樹脂，聚醯胺、聚苯醚樹脂、聚苯硫醚樹脂、酚樹脂、不飽和聚酯樹脂、乙烯酯樹脂、苯二甲酸二烯丙酯樹脂、環氧樹脂、氰酸酯樹脂、二甲苯樹脂、三嗪樹脂、脲樹脂、三聚氰胺樹脂、苯胍胺樹脂、胺基甲酸酯樹脂、氧雜環丁烷樹脂、酮樹脂、醇酸樹脂、呋喃樹脂、苯乙烯吡啶樹脂、聚矽氧樹脂、合成橡膠等。藉由含有AS樹脂或BAAS樹脂，可提高熱可塑性樹脂組成物之流動性。藉由含有ABS樹脂、或MBS樹脂，可提高成形體之耐衝擊性。藉由含有聚酯樹脂，可提高成形體之耐溶劑性。藉由含有氟系樹脂或聚矽氧樹脂，可提高成形體表面之防污效果。該等樹脂可使用一種，亦可併用兩種以上。 該等樹脂之含量，較好相對於甲基丙烯酸聚合物(A) 100質量份，為0.0001質量份以上50質量份以下，更好為0.001質量份以上30質量份以下。 [0048] 含有本實施形態之熱可塑性樹脂組成物之成形體，可藉由將上述之甲基丙烯酸聚合物(A)、含環氧基之聚合物(B)、交聯橡膠粒子(C)與適當添加劑或上述其他樹脂混練獲得熱可塑性樹脂組成物，將其成形為期望形狀而獲得。 作為混練方法並未特別限制，舉例為例如使用擠出機、加熱輥、捏合機、輥混合機、班伯里混合機等之混練機混練之方法。利用擠出機之混練，就生產性方面係較佳。混練溫度只要根據所混合之原料之較佳加工溫度即可，但較好為140~300℃，更好為180~280℃。 [0049] 本實施形態之成形體之成形方法並未特別限定，舉例為射出成形、薄片成形、吹塑成形、射出吹塑成形、吹氣成形、T模嘴成形、加壓成形、擠出成形等之以熔融狀態成形之方法，亦可適用壓空成形、真空成形等之二次加工成形法。 [0050] 作為本實施形態之成形體之用途並不限定於以下，但舉例為例如洗臉化妝盆、廚房水槽、馬桶、浴缸等之水迴繞用品、照明等之外殼用途、側遮陽板、隔熱紙、儀表罩、頭燈罩、尾燈罩、車柱等之汽車中代表之交通工具零件用途，隔音牆或窗等之建材用途，餐具、旅行箱、智慧型手機蓋、化妝品日常用品等之雜貨用途，柏青哥面板等之娛樂用途，看板等，較好為水迴繞用品。又水迴繞用品係於使用水之場所使用之物品。 [0051] 以下藉由實施例及比較例更詳細說明本發明。又，物性之評價方法係藉下述方法進行。 (1)耐溶劑性之測定 以下述條件進行射出成形，準備90mm寬×150mm長×5mm厚之平板。 (成形條件) 成形機：FANUC公司製AUTOSHOT 150D(螺桿直徑：44mm) 螺桿溫度(自噴嘴側起依序)：255/260/250/235/220℃ 射出速度：40mm/秒 保壓：800kg/cm2
，10秒 模具溫度：60℃ 冷卻時間：60秒 [0052] (1-1)耐溶劑性滴下試驗 將上述準備之平板藉由圓鋸床，以於寬度方向均等之方式切斷加工成兩片試驗板後，於73℃之水中浸漬120小時。隨後，擦除表面水分，於溫度23℃/濕度55%之屋內靜置2小時後，於試驗板表面滴下乙醇，觀察表面，並如以下般評價。 X：表面產生龜裂 Y：表面無龜裂 [0053] (1-2)耐溶劑性重複試驗 將上述準備之平板於73℃之水中浸漬48小時。隨後，擦除表面水分，於溫度23℃/濕度55%之屋內靜置72小時。隨後，於試驗板表面蓋上含有乙醇2mL之紙巾(日本製紙CRECIA製，KIMWIPE S-200(註冊商標)，大小：120mm×215mm)，靜置30分鐘，確認有無貫通平板之龜裂。無龜裂時，再度蓋上含有乙醇2mL之紙巾(日本製紙CRECIA製，KIMWIPE S-200(註冊商標)，大小：120mm×215mm)，靜置30分鐘後，確認有無貫通平板之龜裂。重複此步驟，觀察於第幾次試驗產生貫通平板之龜裂。 [0054] 由耐溶劑滴下試驗與耐溶劑性重複試驗之結果，依據以下基準，評價耐溶劑性等級。等級++意指耐溶劑性最優，等級－意指耐溶劑性最差。 ＜耐溶劑性等級＞ ++：耐溶劑性滴下試驗結果為Y，耐溶劑性重複試驗之結果為第2次以上 +：耐溶劑性滴下試驗結果為Y，耐溶劑性重複試驗之結果為第1次 －：耐溶劑性滴下試驗結果為X [0055] (2)翹曲測定 以下述條件進行射出成形，準備90mm寬×150mm長×3mm厚之平板。 (成形條件) 成形機：FANUC公司製AUTOSHOT 150D(螺桿直徑：44mm) 螺桿溫度(自噴嘴側起依序)：255/260/250/235/220℃ 射出速度：50mm/秒 保壓：800kg/cm2
，10秒 模具溫度：60℃ 冷卻時間：20秒 [0056] 測定將上述成形之試驗板放置於平地時之4角落距離地面之距離作為翹曲量。試驗係測定5片試驗板，算出翹曲量之平均值+(3×標準偏差)。算出之值越小，表示翹曲越受抑制。 [0057] (3)最大射出壓之測定 以下述條件將螺桿位置調節至2mm厚之螺旋流動長度為750mm以上760mm以下，進行射出成形，測定最大射出壓。 成形機：東洋機械金屬(股)公司製Si-180V(螺桿直徑：28mm) 螺桿溫度(自噴嘴側起依序)：250/245/240/230/220℃ 射出速度：500mm/秒 保壓：50kg/cm2
，10秒 模具溫度：65℃ 冷卻時間：45秒 [0058] 上述最大射出壓越低，表示成形變形越少，翹曲越受抑制。成形時之翹曲隨成形體大小而異，但以上述(2)算出之值越小且最大射出壓越低，表示各種大小之成形體之成形時之翹曲可被抑制。 [0059] (4)硬度之測定 基於JIS K 5600-5-4測定鉛筆硬度。為2H以上者係硬度優異。 [0060] (5)MFR測定 基於JIS K 7210，於測定溫度230℃、荷重37.3N下，測定MFR。 [0061] [實施例1] 基於日本特公昭55-27576公報記載之方法，藉由乳化聚合，以最內層係使甲基丙烯酸甲酯、丙烯酸甲酯、甲基丙烯酸烯丙酯分別以94.0質量%、5.8質量%、0.2質量%之比例聚合而得之共聚物，中間層係使丙烯酸正丁酯、苯乙烯、甲基丙烯酸烯丙酯分別以81.5質量%、16.5質量%、2.0質量%之比例聚合而得之共聚物，最外層係使甲基丙烯酸甲酯與丙烯酸甲酯分別以94.5質量%、5.5質量%之比例聚合而得之共聚物而成，獲得由最內層、中間層、最外層之比例為35質量%、45質量%、20質量%之交聯橡膠粒子C1。為了防止C1黏連，將對於67質量%之C1，與33質量%之使甲基丙烯酸甲酯與丙烯酸甲酯以90質量%與10質量%之比例聚合之甲基丙烯酸聚合物A1以乳膠狀態與C1混合，隨後進行鹽析，獲得交聯橡膠粒子C1與甲基丙烯酸聚合物A1之混合物D1。 [0062] 於具備攪拌器之聚合反應器中，分別連續供給甲基丙烯酸甲酯97.5質量份及丙烯酸甲酯2.5質量份之混合物、與1,1-二(第三丁基過氧基)環己烷0.016質量份及正辛基硫醇0.16質量份，於255℃、平均滯留時間43分鐘進行聚合反應。其次，自聚合反應器取出之反應液(部分聚合物)預熱後，供給於脫揮發擠出機，將未反應之單體成分氣化並回收，同時獲得顆粒狀之甲基丙烯酸聚合物A2。A2之MFR為2g/10分鐘。 [0063] 作為含環氧基之聚合物(B1)係使用住友化學製“BOND FAST BF-7M”(甲基丙烯酸縮水甘油酯單體單位：6質量%，乙烯單體單位：67質量%，丙烯酸甲酯單體單位：27質量%)。 [0064] 以對於A1與A2之合計100質量份，成為1.2質量份之B1、18.9質量份之C1之比例混合A2、B1與D1。其次對於由D1、A2及B1所成之樹脂成分100質量份，添加作為添加劑之二氧化鈦0.27質量份，季戊四醇肆[3-(3,5-二-第三丁基-4-羥基苯基)丙酸酯]0.08質量份、2,2’-亞甲基雙[6-(2H-苯并三唑-2-基)-4-(1,1,3,3-四甲基丁基)苯酚]0.03質量份，使用日本製鋼所製雙軸擠出機(型號：TEX30SS-30AW-2V)於260℃混練，並顆粒化。使用該顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0065] [實施例2~7] 以對於A1與A2之合計100質量份，使B1與C1之比例成為表1記載之比例以外，以與實施例1同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0066] [比較例1~4] 以對於A1與A2之合計100質量份，使B1與C1之比例成為表1記載之比例以外，以與實施例1同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0067] [實施例8] 除了代替B1而使用住友化學製“BOND FAST BF-7L”(甲基丙烯酸縮水甘油酯單體單位：3質量%，乙烯單體單位：70質量%，丙烯酸甲酯單體單位：27質量%)作為含環氧基之聚合物B2以外，以與實施例7同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0068] [實施例9] 除了代替B1而使用住友化學製“BOND FAST BF-2C”(甲基丙烯酸縮水甘油酯單體單位：6質量%，乙烯單體單位：94質量%)作為含環氧基之聚合物B3以外，以與實施例7同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0069] [實施例10] 除了代替B1而使用住友化學製“BOND FAST BF-E”(甲基丙烯酸縮水甘油酯單體單位：12質量%，乙烯單體單位：88質量%)作為含環氧基之聚合物B4以外，以與實施例7同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。評價結果示於表2。 [0070][0071] 又，表1中之空欄表示不含有含環氧基之聚合物。 [0072][0073] 又，表2中之空欄表示未測定。且耐溶劑性重複試驗之結果為「第16次以上」意指即使第15次亦未產生龜裂。 [0074] 由表2之結果可知，比較例1及4之耐溶劑等級為－，耐溶記性差，比較例2與實施例相比硬度較低，比較例3與實施例相比翹曲值較小，無法抑制成形時之翹曲。 [0075] [實施例11] 於具備攪拌器之聚合反應器中，分別連續供給甲基丙烯酸甲酯96質量份及丙烯酸甲酯4質量份之混合物、與1,1-二(第三丁基過氧基)環己烷0.017質量份及正辛基硫醇0.27質量份，於255℃、平均滯留時間43分鐘進行聚合反應。其次，自聚合反應器取出之反應液(部分聚合物)預熱後，供給於脫揮發擠出機，將未反應之單體成分氣化並回收，同時獲得顆粒狀之甲基丙烯酸聚合物A3。 A3之MFR為11g/10分鐘。 [0076] 除了代替A2而使用A3以外，以與實施例4同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。其結果，耐溶劑滴下試驗為Y，耐溶劑性重複試驗為第1次，耐溶劑等級為+。且翹曲為1.5，射出壓為228MPa，鉛筆硬度為2H。 [0077] [比較例5] 除了代替B1而使用住友化學製“ACRYFT WK307”(乙烯單體單位：75質量%，甲基丙烯酸甲酯單體單位：25質量%)以外，以與實施例7同樣方法獲得顆粒。使用所得顆粒，進行耐溶劑性、翹曲及硬度評價。其結果，耐溶劑滴下試驗為X，耐溶劑性重複試驗為第9次，耐溶劑等級為－。且翹曲為1.5，射出壓為227MPa，鉛筆硬度為2H。由該等結果，可知比較例5之耐溶劑性差。[0010] The following is a detailed description of a mode for implementing the present invention (hereinafter referred to as "this embodiment"). The following embodiment is an illustration for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be appropriately changed within the scope of its gist. In addition, in this specification, the constituent unit of the constituent polymer derived from the monomer (X) may be described as the "monomer unit derived from the monomer (X)". In addition, in further brief description, for example, the monomer unit derived from methyl methacrylate is described as "methyl methacrylate monomer unit", and the monomer unit derived from alkyl acrylate is also described as "alkyl acrylate". Monomer unit". In addition, in this specification, unless otherwise specified, the numerical range "Y to Z" means "Y or more and Z or less", and (meth)acrylic acid means methacrylic acid or acrylic acid. In addition, the so-called alkyl (meth)acrylate is a compound represented by CH 2 =CHCOOR (R is an alkyl group) or CH 2 =C(CH 3 )COOR (R is an alkyl group). [0011] (Methacrylic acid polymer (A)) The methacrylic acid polymer (A) is a polymer containing 85 to 100% by mass of monomer units derived from methyl methacrylate. In addition, it is different from the crosslinked rubber particles (C) described later. [0012] Examples of the methacrylic polymer (A) include, for example, a homopolymer composed of only methyl methacrylate monomer units, and other than methyl methacrylate monomer units and methyl methacrylate. A copolymer or the like composed of an alkyl (meth)acrylate monomer unit is preferably an alkyl (meth)acrylate monomer unit other than a methyl methacrylate monomer unit and a methyl methacrylate monomer unit The resulting copolymer. These may use 1 type, and may use 2 or more types together. Examples of alkyl (meth)acrylates other than the above-mentioned methyl methacrylate include methyl acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, n-butyl (meth)acrylate, (meth) Base) second butyl acrylate, 2-ethylhexyl (meth)acrylate, etc., preferably methyl acrylate, ethyl (meth)acrylate or n-butyl (meth)acrylate, more preferably methyl acrylate Ester or ethyl (meth)acrylate. [0013] The methacrylic polymer (A) may be a polymer having one type of (meth)acrylic acid alkyl ester monomer unit other than the above-mentioned methyl methacrylate monomer unit, or may have two or more types of these monomers. The polymer of the body unit. In addition, the methacrylic polymer (A) may contain two or more types of (meth)acrylic acid alkyl ester monomer units other than the above-mentioned methyl methacrylate monomer units. -(Meth) acrylate copolymer" mixture. [0014] The content of the methyl methacrylate monomer unit is 85-100% by mass, preferably 87-99.5% by mass, more preferably 89-99% by mass. The content of the alkyl (meth)acrylate monomer units other than the methyl methacrylate monomer unit is 0 to 15% by mass, preferably 0.5 to 13% by mass, more preferably 1 to 11% by mass. However, the total amount of the alkyl (meth)acrylate monomer units other than the methyl methacrylate monomer unit and the methyl methacrylate monomer unit is 100% by mass. When the content of the methyl methacrylate monomer unit and the content of the alkyl (meth)acrylate monomer unit other than the above methyl methacrylate monomer unit are within the above range, a molded body with excellent heat resistance or mechanical strength can be obtained . [0015] The content of the methacrylic polymer (A) can be obtained by weighing the soluble component after re-precipitation (hereinafter referred to as the acetone soluble portion) when the thermoplastic resin composition of the present embodiment is dissolved in acetone . The content of methyl methacrylate monomer units in the methacrylic polymer (A) and the content of alkyl (meth)acrylate monomer units other than methyl methacrylate monomer units can be achieved by using thermal decomposition gas It can be obtained by analyzing the acetone-soluble part by a phase chromatograph or the like. [0016] The polymerization method used to obtain the methacrylic polymer (A) is not particularly limited, but examples include suspension polymerization, emulsion polymerization, bulk polymerization, solution polymerization, and the like. [0017] For the methacrylic polymer (A), commercially available products can be used, for example, "SUMIPEX" manufactured by Sumitomo Chemical Co., Ltd., "ACRYPET" manufactured by Mitsubishi Chemical Co., Ltd., "PARAPET" manufactured by KURARAY Co., Ltd., "DURAPET" manufactured by Asahi Kasei Co., Ltd., etc. [0018] The melt flow rate (MFR) of the methacrylic polymer (A) is preferably 0.5 to 25 g/10 min, more preferably 1 to 8 g/10 min. In addition, MFR is based on JIS K 7218 and measured at a measurement temperature of 230°C and a load of 37.3N. If the MFR of the methacrylic polymer (A) is in the above range, a molded body with more excellent solvent resistance can be obtained, and warpage during molding can be further suppressed. [0019] (Epoxy group-containing polymer (B)) The epoxy group-containing polymer (B) contains a (meth)acrylate monomer unit derived from an epoxy group (hereinafter referred to as monomer unit) (b1)) 1-50% by mass, and a monomer unit derived from at least one monomer selected from the group consisting of ethylene, α-olefins with 3 or more carbon atoms, and styrene (hereinafter referred to as monomer unit ( b2)) From the viewpoint of solvent resistance, a polymer of 50 to 99% by mass is preferably a polymer further containing an alkyl (meth)acrylate monomer unit (hereinafter referred to as monomer unit (b3)). Here, the monomer unit (b3) does not contain an epoxy group monomer unit. Also, the so-called α-olefin is an olefin having a carbon-carbon double bond at the α position. [0020] Examples of the epoxy group-containing (meth)acrylate in the monomer unit (b1) are glycidyl (meth)acrylate, (meth)acrylic acid [(3,4-epoxycyclohexyl) Alkyl)-1-yl]methyl ester, (meth)acrylic acid-3,4-epoxybutyl ester, (meth)acrylic acid-6,7-epoxyheptyl ester, etc., preferably (meth) Glycidyl acrylate. The epoxy group-containing polymer (B) may be a polymer having one monomer unit (b1), or a polymer having two or more types, or a polymer containing two or more monomer units (b1). The types are a mixture of different polymers. By containing the monomer unit (b1), a molded body with more excellent solvent resistance can be obtained. [0021] The content of the monomer unit (b1) is 1 to 50% by mass, preferably 1 to 30% by mass, more preferably 1 to 20% by mass. However, the total amount of the monomer unit of the monomer unit (b1) and the monomer unit (b2) is 100% by mass. In addition, the content of the monomer unit (b1) can be obtained by analysis by NMR or the like. When the content of the monomer unit (b1) is in the above-mentioned range, a molded body with more excellent solvent resistance can be obtained. [0022] The α-olefin having a carbon number of 3 or more in the monomer unit (b2) is exemplified by propylene, 1-butene, 1-hexene, 1-octene, etc., preferably propylene. [0023] The monomer in the monomer unit (b2) is preferably ethylene or propylene, more preferably ethylene. The epoxy group-containing polymer (B) can be a polymer with one monomer unit (b2), can also be a polymer with two or more types, and can also be a type with two or more monomer units (b2) It is a mixture of different polymers. [0024] The content of the monomer unit (b2) is 50 to 99% by mass, preferably 70 to 99% by mass, more preferably 80 to 99% by mass. However, the total amount of monomer units derived from monomer unit (b1) and monomer unit (b2) is 100% by mass. In addition, the content of the monomer unit (b2) can be obtained by analysis by NMR or the like. When the content of the monomer unit (b2) is within the above-mentioned range, a molded body with more excellent solvent resistance can be obtained. [0025] Examples of the alkyl (meth)acrylate in the monomer unit (b3) are methyl (meth)acrylate, ethyl (meth)acrylate, n-propyl (meth)acrylate, and (meth)acrylic acid. N-butyl ester, second butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, etc., preferably methyl (meth)acrylate or ethyl (meth)acrylate, more preferably ( Methyl meth)acrylate. The epoxy group-containing polymer (B) can be a polymer with one monomer unit (b3), can also be a polymer with two or more types, and can also be a type with two or more monomer units (b3) It is a mixture of different polymers. [0026] When the epoxy group-containing polymer (B) is a polymer that further contains a monomer unit (b3), the content of the monomer unit (b3) is preferably from 0.1 to 50% by mass, more preferably from 1 to 45 % By mass, more preferably 3-40% by mass. However, the total amount of the monomer unit (b1) and the monomer unit (b2) is 100% by mass. In addition, when the content of the monomer unit (b3) is in the above range, a molded body with more excellent solvent resistance can be obtained. [0027] The polymerization method used to obtain the epoxy group-containing polymer (B) is not particularly limited, and examples thereof include methods such as high-pressure radical polymerization, solution polymerization, and emulsion polymerization. In addition, it can also be used for example by solution kneading or melt kneading in polymers having monomer units (b2) such as polyethylene, polypropylene, polystyrene, ethylene-α-olefin copolymers, and styrene copolymers. Based on (meth)acrylate and graft polymerization method. [0028] As the epoxy group-containing polymer (B), commercially available products can be used, and for example, "BOND FAST" manufactured by Sumitomo Chemical Co., Ltd. can be used. [0029] The content of the epoxy group-containing polymer (B) contained in the thermoplastic resin composition is 0.1 parts by mass to 100 parts by mass relative to 100 parts by mass of the methacrylic polymer (A). Preferably it is 0.3 part by mass or more and 50 parts by mass or less, more preferably 0.5 part by mass or more and 20 parts by mass or less. By setting the content of the epoxy group-containing polymer (B) in the above range, a molded body with more excellent solvent resistance can be obtained, and warpage during molding can be further suppressed. [0030] The content of the epoxy group-containing polymer (B) can be determined by dissolving the thermoplastic resin composition of the present embodiment in the insoluble component (hereinafter referred to as the acetone insoluble portion) when dissolved in toluene. The soluble component is weighed by re-precipitation (hereinafter referred to as "toluene soluble part in acetone insoluble part"). The content of the monomer unit (b1), the content of the monomer unit (b2) and the content of the monomer unit (b3) in the epoxy-containing polymer (B) can be analyzed by using NMR to analyze the content of the acetone insoluble part. The toluene soluble part was determined. [0031] (Crosslinked rubber particles (C)) The crosslinked rubber particles (C) are derived from alkyl (meth)acrylate, butadiene, isoprene, chloroprene, and styrene. The monomer unit of at least one monomer in the group consisting of, α-alkylstyrene, acrylonitrile and methacrylonitrile and a multifunctional monomer derived from a multifunctional monomer with more than two carbon-carbon double bonds The rubber particles of the resin of the body unit. [0032] As the alkyl (meth)acrylate, for example, methyl (meth)acrylate, ethyl (meth)acrylate, isopropyl (meth)acrylate, isobutyl (meth)acrylate, (meth)acrylate Yl) tert-butyl acrylate, 2-ethylhexyl (meth)acrylate, cyclohexyl (meth)acrylate, etc. Examples of α-alkylstyrene include α-methylstyrene, tertiary butylstyrene, and the like. [0033] As a multifunctional monomer having two or more carbon-carbon double bonds, for example, diallyl maleate, allyl (meth)acrylate, divinylbenzene, trivinylbenzene, alkane Alcohol di(meth)acrylate, triallyl isocyanate, polyethylene glycol di(meth)acrylate, etc. Only one kind of these may be used, or two or more kinds may be used. [0034] The cross-linked rubber particles (C) may be single-layer rubber particles or multilayer rubber particles. The cross-linked rubber particles (C) are preferably rubber particles each having one or more soft layers and two or more layers of hard layers, since it can suppress thermal degradation during molding or deformation of rubber particles due to heating, It can improve the heat resistance tendency of the molded body, so it is better to have organic rubber particles having more than one soft layer and three or more hard layers. [0035] The organic rubber particles having three or more layers of soft layer and hard layer having one or more layers are preferably as shown in FIG. 2 of the structure. Here, the innermost layer exists in the most central layer of the particle, and the outermost layer exists in the layer furthest from the center of the particle. In addition, the intermediate layer is a layer existing between the innermost layer and the outermost layer, and may have two or more layers. Among the organic rubber particles with more than three layers, the innermost layer and the outermost layer can be a soft layer or a hard layer, and the middle layer can be a soft layer or a hard layer, or a laminate of a soft layer and a hard layer. As the structure of three or more layers of organic rubber particles, for example, there are soft layer-hard layer-soft layer-hard layer, soft layer-hard layer-hard layer, soft layer-soft layer-hard layer in order from the center of the particle toward the outside. The structure of layer, hard layer-soft layer-hard layer, hard layer-hard layer-soft layer-hard layer, hard layer-soft layer-hard layer-hard layer, etc., preferably has a hard layer in order from the center of the particle toward the outside The three-layer structure of layer-soft layer-hard layer, the four-layer structure of hard layer-hard layer-soft layer-hard layer or the four-layer structure of hard layer-soft layer-hard layer-hard layer. The organic rubber particles with three or more layers are preferably organic rubber particles with a three-layer structure in which the innermost layer and the outermost layer are hard layers, and the middle layer is a soft layer. By making the innermost layer and the outermost layer as hard layers, there is a tendency to suppress the deformation of the organic rubber particles, and by making the middle layer a soft layer, there is a tendency to increase the toughness of the organic rubber particles. [0036] Examples of monomer units included in the resin contained in the hard layer include the above-mentioned polyfunctional monomer units, methyl methacrylate monomer units, ethyl methacrylate monomer units, and n-propyl methacrylate. Monomer unit, isopropyl methacrylate monomer unit, n-butyl methacrylate monomer unit, second butyl methacrylate monomer unit, third butyl methacrylate monomer unit, methacrylic acid 2 -Ethylhexyl monomer unit, cyclohexyl methacrylate monomer unit, α-methylstyrene monomer unit, tertiary butyl styrene monomer unit, acrylonitrile monomer unit, methacrylonitrile monomer unit Body unit and so on. These may contain only 1 type, and may use 2 or more types. When the hard layer is formed as the innermost layer, the monomer units contained in the resin contained in the hard layer are preferably the above-mentioned polyfunctional monomer units and methyl methacrylate monomer units or ethyl methacrylate monomer units . The content of the polyfunctional monomer unit contained in the hard layer formed as the innermost layer is preferably from 0.0001% by mass to 10% by mass. However, the total amount of all monomer units contained in the resin of the hard layer formed as the innermost layer is 100% by mass. When the hard layer is formed as the outermost layer, the monomer unit contained in the resin contained in the hard layer is preferably a methyl methacrylate monomer unit or an ethyl methacrylate monomer unit. [0037] Examples of the monomer unit included in the resin contained in the soft layer are the above-mentioned polyfunctional monomer unit, n-butyl acrylate monomer unit, 2-ethylhexyl acrylate monomer unit, etc. The carbon number is 4 ~11 alkyl acrylate monomer units, styrene monomer units, isoprene monomer units, chloroprene monomer units, etc., preferably the above-mentioned multifunctional monomer units, with carbon numbers of 4-11 The alkyl acrylate monomer unit or styrene monomer unit is more preferably the above-mentioned polyfunctional monomer unit, n-butyl acrylate monomer unit or styrene monomer unit. The content of the polyfunctional monomer unit contained in the resin contained in the soft layer is preferably from 0.0001% by mass to 10% by mass. However, the total amount of all monomer units contained in the resin contained in the soft layer is 100% by mass. [0038] The content of the crosslinked rubber particles (C) contained in the thermoplastic resin composition is 0.001 parts by mass or more and 25 parts by mass or less, preferably 0.5 parts by mass relative to 100 parts by mass of the methacrylic polymer (A) Part or more and 24 parts by mass or less, more preferably 1 part by mass or more and 23 parts by mass or less, still more preferably 7 parts by mass or more and 23 parts by mass or less. By setting the content of the crosslinked rubber particles (C) in the above range, a molded body with more excellent solvent resistance and hardness can be obtained, and warpage during molding can be suppressed. The content of the crosslinked rubber particles (C) can be determined by dissolving the insoluble component in the acetone-insoluble part of the thermoplastic resin composition of this embodiment in toluene (hereinafter referred to as the toluene-insoluble part in the acetone-insoluble part) Calculate by weighing. In addition, in the case of a thermoplastic resin composition containing an inorganic substance, the content of the crosslinked rubber particles (C) can be obtained by removing the ash content determined based on JIS K7250-1 from the amount of the toluene insoluble portion in the acetone insoluble portion. [0039] The method for producing the crosslinked rubber particles (C) is not particularly limited, and examples thereof include the method described in Japanese Patent Application Laid-Open No. 55-27576. [0040] The thermoplastic resin composition of the present embodiment is a composition containing a methacrylic polymer (A), an epoxy group-containing polymer (B), and crosslinked rubber particles (C). The thermoplastic resin composition of this embodiment contains an acetone-insoluble part. The acetone-insoluble portion of the thermoplastic resin composition is preferably 5 parts by mass or more and 25 parts by mass or less, more preferably 6 parts by mass or more and 24 parts by mass or less, still more preferably 7 parts by mass relative to 100 parts by mass of the thermoplastic resin composition Parts by mass or more and 23 parts by mass or less. When the acetone-insoluble part is in the above range, a molded body with more excellent solvent resistance and hardness can be obtained. [0041] The thermoplastic resin composition of this embodiment may contain additives within a range that does not impair the purpose of the present invention. Examples of additives include antioxidants, ultraviolet absorbers, inorganic fillers, colorants, flame retardants, etc., and it is preferable to add antioxidants, ultraviolet absorbers, inorganic fillers, and coloring agents. [0042] The antioxidant is not particularly limited, but a hindered phenol-based antioxidant or a phosphorus-based antioxidant is exemplified. Specifically, examples are pentaerythritol-tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 6-[3-(3-tert-butyl-4- Hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-tert-butylbenzo[d,f][1,3,2]dioxaphosphene , Ginseng phosphite (2,4-di-tert-butylphenyl) ester, thiodiethylene [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] , Octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate, N,N-hexane-1,6-diylbis[3-(3, 5-Di-tert-butyl-4-hydroxyphenyl)propanamide], 3,3',3”,5,5',5”-hexa-tert-butyl-a,a',a” -(Mesitylene-2,4,6-triyl)tris-p-cresol, 4,6-bis(octylthiomethyl)-o-cresol, 4,6-bis(dodecylsulfide) Methyl)-o-cresol, ethylenebis(oxyethylene)bis[3-(5-tertiarybutyl-4-hydroxy-m-tolyl)propionate], hexaethylene Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 1,3,5-ginseng (3,5-di-tert-butyl-4-hydroxybenzyl)基)-1,3,5-triazine-2,4,6 (1H,3H,5H)-trione, 1,3,5-gin[(4-tert-butyl-3-hydroxy-2, 6-Xylene)methyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 2,6-di-tert-butyl-4-(4, 6-bis(octylthio)-1,3,5-triazin-2-ylamine)phenol, etc., preferably pentaerythritol-tetra[3-(3,5-di-tert-butyl-4-hydroxyl) Phenyl) propionate] or 6-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propoxy]-2,4,8,10-tetra-tert-butyl Benzo[d,f][1,3,2]dioxaphosphorene. These can be used singly, or two or more of them can be used in combination. The antioxidant content is preferably relative to methacrylic acid 100 parts by mass of the polymer (A) is 0.0001 part by mass or more and 5 parts by mass or less, more preferably 0.001 part by mass or more and 1 part by mass or less. -Methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol], 2,4-di-tert-butyl Phenyl-3',5'-di-tert-butyl-4'-hydroxybenzoate, bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate , Si (1,2,2,6,6-pentamethyl-4-piperidinyl) 1,2,3,4-butane tetracarboxylic acid ester, etc.. These can use one or two in combination Above. The content of the ultraviolet absorber is preferably 0.0001 part by mass to 5 parts by mass relative to 100 parts by mass of the methacrylic polymer (A) , More preferably 0.001 part by mass or more and 1 part by mass or less. [0044] The inorganic filler is not particularly limited, and examples thereof include glass fiber, carbon fiber, calcium silicate fiber, potassium titanate fiber, aluminum borate fiber, flake glass, talc, kaolin, mica, hydrotalcite, calcium carbonate, Zinc carbonate, zinc oxide, zinc dioxide, calcium hydrogen phosphate, wollastonite, silica, zeolite, aluminum oxide, aluminum oxide, boehmite, aluminum hydroxide, titanium oxide, titanium dioxide, silicic acid, silicon oxide, Silicon dioxide, magnesium oxide, magnesium dioxide, calcium silicate, sodium aluminate silicate, magnesium silicate, barium sulfate, brass, copper, silver, aluminum, nickel, iron, iron oxide, graphite, carbon nanotubes , Calcium fluoride, mica, montmorillonite, swelling fluoromica, igneite, etc. These inorganic fillers can also be properly surface-treated. In addition, only one type of these inorganic fillers may be used, or two or more types may be used in combination. The content of the inorganic filler is preferably from 0.0001 part by mass to 30 parts by mass, and more preferably from 0.001 part by mass to 10 parts by mass relative to 100 parts by mass of the methacrylic polymer (A). [0045] The coloring agent is not particularly limited, and examples include perylene dyes, perinone dyes, pyrazolone dyes, methine dyes, coumarin dyes, quinophthalone dyes, Quinoline dyes, anthraquinone dyes, anthraquinone dyes, anthrapyridone dyes, thioindigo dyes, coumarin dyes, isoindolinone pigments, diketopyrrolopyrrole pigments, condensation couplings Nitrogen pigments, benzimidazolone pigments, dioxazine pigments, copper phthalocyanine pigments, quinacridone pigments, nickel complex compounds, zinc stearate, magnesium stearate, calcium stearate , Aluminum stearate, polymethylsilsesquioxane, copper phthalocyanine halide, ethylene distearate, ultramarine, ultramarine, Ketjen black, acetylene black, furnace black, carbon black, liquid paraffin , Silicone oil, etc. One of these may be used, or two or more of them may be used in combination. The content of the colorant is preferably from 0.0001 part by mass to 5 parts by mass, more preferably from 0.001 part by mass to 1 part by mass relative to 100 parts by mass of the methacrylic polymer (A). [0046] The flame retardant is not particularly limited, and examples include, for example, cyclic nitrogen compounds, phosphorus-based flame retardants, silicon-based flame retardants, cage silsesquioxanes or partially cracked structures thereof, and silica-based flame retardants. Burning agent, etc. One of these may be used, or two or more of them may be used in combination. The content of the flame retardant is preferably from 0.0001 part by mass to 5 parts by mass, more preferably from 0.001 part by mass to 1 part by mass relative to 100 parts by mass of the methacrylic polymer (A). [0047] The thermoplastic resin composition of this embodiment may also contain a methacrylic polymer (A), an epoxy group-containing polymer (B), and crosslinked rubber particles within the scope that does not impair the purpose of the present invention. Resin other than (C). Examples of such resins include polypropylene, polyethylene, polystyrene, ABS resin (acrylonitrile-butadiene-styrene copolymer), AS resin (acrylonitrile-styrene copolymer), BAAS resin (butadiene Ene-acrylonitrile-acrylonitrile rubber-styrene copolymer), MBS resin (methyl methacrylate-butadiene-styrene copolymer), AAS resin (acrylonitrile-acrylonitrile rubber-styrene copolymer), Polylactic acid, polycarbonate, polybutylene terephthalate, polyethylene terephthalate, polytrimethylene terephthalate, polytrimethylene terephthalate, polyethylene naphthalate Ester and other tallow polyalkene diester resins, polytetrafluoroethylene (tetrafluoroethylene resin, PTFE), trifluoroethylene chlorinated resin (PCTFE), tetrafluoroethylene hexafluoroethylene propylene resin (PFEP) , Fluorinated vinyl resin (PVF), vinylidene fluoride resin (PVDF), difluorinated ethylene dichloride resin, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene Copolymer, tetrafluoroethylene-ethylene copolymer (ETFE), polyvinylidene fluoride, polychlorotrifluoroethylene, chlorotrifluoroethylene-ethylene copolymer (ECTFE) and other fluorine resins, polyamide, polyphenylene ether Resins, polyphenylene sulfide resins, phenol resins, unsaturated polyester resins, vinyl ester resins, diallyl phthalate resins, epoxy resins, cyanate ester resins, xylene resins, triazine resins, urea resins, Melamine resin, benzoguanamine resin, urethane resin, oxetane resin, ketone resin, alkyd resin, furan resin, styrene pyridine resin, silicone resin, synthetic rubber, etc. By containing AS resin or BAAS resin, the fluidity of the thermoplastic resin composition can be improved. By containing ABS resin or MBS resin, the impact resistance of the molded body can be improved. By containing polyester resin, the solvent resistance of the molded body can be improved. By containing fluorine-based resin or silicone resin, the antifouling effect on the surface of the molded body can be improved. One type of these resins may be used, or two or more types may be used in combination. The content of these resins is preferably from 0.0001 part by mass to 50 parts by mass, more preferably from 0.001 part by mass to 30 parts by mass relative to 100 parts by mass of the methacrylic polymer (A). [0048] A molded body containing the thermoplastic resin composition of this embodiment can be formed by combining the above-mentioned methacrylic polymer (A), epoxy group-containing polymer (B), and crosslinked rubber particles (C) It is obtained by kneading with appropriate additives or the above-mentioned other resins to obtain a thermoplastic resin composition, and molding it into a desired shape. The kneading method is not particularly limited, and examples thereof include a method of kneading using a kneader such as an extruder, a heated roll, a kneader, a roll mixer, and a Banbury mixer. Kneading with an extruder is better in terms of productivity. The kneading temperature may be based on the preferred processing temperature of the raw materials to be mixed, but it is preferably 140 to 300°C, more preferably 180 to 280°C. [0049] The molding method of the molded body of this embodiment is not particularly limited, and examples are injection molding, sheet molding, blow molding, injection blow molding, blow molding, T die molding, pressure molding, and extrusion molding. Such as the method of forming in a molten state, secondary processing forming methods such as pressure forming and vacuum forming can also be applied. [0050] The use of the molded body of this embodiment is not limited to the following, but examples include water recirculation supplies such as wash basins, kitchen sinks, toilets, bathtubs, etc., enclosure uses for lighting, side sun visors, and heat insulation. Paper, instrument covers, headlight covers, taillight covers, pillars, etc., represented in automobiles, such as transportation parts, soundproof walls or windows and other building materials, tableware, suitcases, smart phone covers, cosmetics, daily necessities, etc. , Pachinko panels and other entertainment uses, billboards, etc., are preferably water recirculation products. Water recirculation supplies are items used in places where water is used. [0051] Hereinafter, the present invention will be described in more detail with examples and comparative examples. In addition, the evaluation method of physical properties was performed by the following method. (1) Measurement of solvent resistance. Injection molding was carried out under the following conditions, and a flat plate of 90mm width×150mm length×5mm thickness was prepared. (Molding conditions) Molding machine: AUTOSHOT 150D manufactured by FANUC (screw diameter: 44mm) Screw temperature (in order from the nozzle side): 255/260/250/235/220°C Injection speed: 40mm/sec Holding pressure: 800kg/ cm 2 , 10 seconds Mold temperature: 60°C Cooling time: 60 seconds [0052] (1-1) Solvent resistance dripping test The above-prepared flat plate was cut and processed into two pieces equally in the width direction by a circular saw After the test plate was sliced, it was immersed in water at 73°C for 120 hours. Subsequently, the surface moisture was wiped off, and after standing for 2 hours in a room at a temperature of 23°C/humidity of 55%, ethanol was dropped on the surface of the test plate, the surface was observed, and the evaluation was performed as follows. X: Cracks on the surface Y: No cracks on the surface [0053] (1-2) Repeat the solvent resistance test The plate prepared above is immersed in water at 73°C for 48 hours. Then, wipe off the surface moisture, and let it stand for 72 hours in a room with a temperature of 23°C and a humidity of 55%. Then, cover the surface of the test plate with a paper towel (made by Nippon Paper CRECIA, KIMWIPE S-200 (registered trademark), size: 120mm×215mm) containing 2 mL of ethanol, and let it stand for 30 minutes to confirm whether there are cracks penetrating the plate. When there are no cracks, cover it with a paper towel (made by Nippon Paper CRECIA, KIMWIPE S-200 (registered trademark), size: 120mm×215mm) containing 2 mL of ethanol. After standing for 30 minutes, check whether there are cracks penetrating the plate. Repeat this step and observe the cracks that penetrate the flat plate in the first few trials. [0054] Based on the results of the solvent dripping resistance test and the repeated solvent resistance test, the solvent resistance level was evaluated based on the following criteria. Grade ++ means the best solvent resistance, grade-means the worst solvent resistance. <Solvent resistance grade> ++: The result of the solvent resistance dripping test is Y, the result of the solvent resistance repeated test is the second time or more +: The result of the solvent resistance dripping test is Y, and the result of the solvent resistance repeated test is the first 1 time -: Solvent resistance dripping test result is X [0055] (2) Warpage measurement The injection molding was performed under the following conditions, and a flat plate of 90 mm width × 150 mm length × 3 mm thickness was prepared. (Molding conditions) Molding machine: AUTOSHOT 150D manufactured by FANUC (screw diameter: 44mm) Screw temperature (in order from the nozzle side): 255/260/250/235/220°C Injection speed: 50mm/sec Holding pressure: 800kg/ cm 2 , 10 seconds Mold temperature: 60°C Cooling time: 20 seconds [0056] The distance between the four corners and the ground when the shaped test plate is placed on a flat ground is measured as the amount of warpage. The test system measures 5 test panels and calculates the average value of warpage + (3×standard deviation). The smaller the calculated value, the more suppressed the warpage. [0057] (3) Measurement of the maximum injection pressure The screw position was adjusted to a 2mm thick spiral flow length of 750 mm or more and 760 mm or less under the following conditions, injection molding was performed, and the maximum injection pressure was measured. Molding machine: Si-180V (screw diameter: 28mm) manufactured by Toyo Machinery & Metal Co., Ltd. Screw temperature (in order from the nozzle side): 250/245/240/230/220°C Injection speed: 500mm/sec Holding pressure: 50kg/cm 2 , 10 seconds Mold temperature: 65°C Cooling time: 45 seconds [0058] The lower the above-mentioned maximum injection pressure, the less the forming deformation and the more restrained the warpage. The warpage during molding varies with the size of the molded body, but the smaller the value calculated in (2) above and the lower the maximum injection pressure, it means that the warpage during molding of molded bodies of various sizes can be suppressed. [0059] (4) Measurement of hardness The pencil hardness is measured based on JIS K 5600-5-4. Those of 2H or more have excellent hardness. [0060] (5) The MFR measurement is based on JIS K 7210, and the MFR is measured at a measurement temperature of 230° C. and a load of 37.3 N. [Example 1] Based on the method described in Japanese Patent Publication No. 55-27576, by emulsion polymerization, the innermost layer of methyl methacrylate, methyl acrylate, and allyl methacrylate were respectively 94.0 Mass%, 5.8%, and 0.2% by mass are copolymers obtained by polymerization. The intermediate layer is made of n-butyl acrylate, styrene, and allyl methacrylate at 81.5% by mass, 16.5% by mass, and 2.0% by mass, respectively. The outermost layer is a copolymer obtained by polymerizing methyl methacrylate and methyl acrylate in the proportions of 94.5% by mass and 5.5% by mass, respectively. The innermost layer and the middle layer are obtained. , The proportion of the outermost layer is 35% by mass, 45% by mass, and 20% by mass of cross-linked rubber particles C1. In order to prevent C1 from sticking, the methacrylic polymer A1 polymerized with methyl methacrylate and methyl acrylate in the ratio of 90% and 10% by mass for C1 of 67% by mass and 33% by mass of C1 is in latex state It is mixed with C1 and then salted out to obtain a mixture D1 of crosslinked rubber particles C1 and methacrylic polymer A1. [0062] In a polymerization reactor equipped with a stirrer, a mixture of 97.5 parts by mass of methyl methacrylate and 2.5 parts by mass of methyl acrylate, and 1,1-bis(tertiary butylperoxy) ring were continuously supplied. 0.016 parts by mass of hexane and 0.16 parts by mass of n-octyl mercaptan were polymerized at 255°C for an average residence time of 43 minutes. Secondly, the reaction liquid (part of the polymer) taken out from the polymerization reactor is preheated and supplied to the devolatilization extruder to vaporize and recover the unreacted monomer components, and at the same time obtain granular methacrylic polymer A2 . The MFR of A2 is 2g/10 minutes. [0063] As the epoxy group-containing polymer (B1), "BOND FAST BF-7M" manufactured by Sumitomo Chemical (glycidyl methacrylate monomer unit: 6% by mass, ethylene monomer unit: 67% by mass) was used. Methyl acrylate monomer unit: 27% by mass). [0064] A2, B1, and D1 were mixed in a ratio of 1.2 parts by mass of B1 and 18.9 parts by mass of C1 for the total of 100 parts by mass of A1 and A2. Secondly, for 100 parts by mass of the resin component composed of D1, A2 and B1, add 0.27 parts by mass of titanium dioxide as an additive, and pentaerythritol 4[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propane Ester] 0.08 parts by mass, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol ] 0.03 parts by mass, kneaded at 260°C using a twin-screw extruder (model: TEX30SS-30AW-2V) manufactured by Japan Steel, and pelletized. Using the pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [Examples 2 to 7] The pellets were obtained in the same manner as in Example 1, except that the ratio of B1 to C1 was set to the ratio described in Table 1 with respect to the total of 100 parts by mass of A1 and A2. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [Comparative Examples 1 to 4] The pellets were obtained in the same manner as in Example 1, except that the ratio of B1 to C1 was set to the ratio described in Table 1 with respect to the total of 100 parts by mass of A1 and A2. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [Example 8] Instead of B1, "BOND FAST BF-7L" manufactured by Sumitomo Chemical (glycidyl methacrylate monomer unit: 3% by mass, ethylene monomer unit: 70% by mass, methyl acrylate was used) Monomer unit: 27% by mass) Except for the epoxy group-containing polymer B2, pellets were obtained in the same manner as in Example 7. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [Example 9] Instead of B1, "BOND FAST BF-2C" manufactured by Sumitomo Chemical (glycidyl methacrylate monomer unit: 6 mass%, ethylene monomer unit: 94 mass%) was used as the ring-containing Except for the oxy-based polymer B3, pellets were obtained in the same manner as in Example 7. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [Example 10] Instead of B1, "BOND FAST BF-E" manufactured by Sumitomo Chemical (glycidyl methacrylate monomer unit: 12% by mass, ethylene monomer unit: 88% by mass) was used as the ring-containing Except for the oxy-based polymer B4, pellets were obtained in the same manner as in Example 7. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. The evaluation results are shown in Table 2. [0070] [0071] In addition, the empty columns in Table 1 indicate that they do not contain epoxy-containing polymers. [0072] [0073] Also, an empty column in Table 2 indicates that it has not been determined. In addition, the result of the repeated test of solvent resistance is "16th time or more", which means that no cracks occurred even for the 15th time. [0074] From the results in Table 2, it can be seen that the solvent resistance grades of Comparative Examples 1 and 4 are -, the solubility resistance is poor, the hardness of Comparative Example 2 is lower than that of Examples, and the warpage value of Comparative Example 3 is compared with that of Examples. It is small and cannot suppress warpage during forming. [Example 11] In a polymerization reactor equipped with a stirrer, a mixture of 96 parts by mass of methyl methacrylate and 4 parts by mass of methyl acrylate, and 1,1-bis(tertiary butyl) were continuously supplied. Peroxy) cyclohexane 0.017 parts by mass and n-octyl mercaptan 0.27 parts by mass were polymerized at 255°C for an average residence time of 43 minutes. Secondly, the reaction liquid (part of the polymer) taken out from the polymerization reactor is preheated and supplied to the devolatilization extruder to vaporize and recover the unreacted monomer components, and at the same time obtain granular methacrylic polymer A3 . The MFR of A3 is 11g/10 minutes. [0076] A pellet was obtained in the same manner as in Example 4 except that A3 was used instead of A2. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. As a result, the solvent drop resistance test was Y, the solvent resistance repeat test was the first time, and the solvent resistance rating was +. And the warpage is 1.5, the injection pressure is 228MPa, and the pencil hardness is 2H. [Comparative Example 5] The same as in Example 7 except that "ACRYFT WK307" manufactured by Sumitomo Chemical (ethylene monomer unit: 75% by mass, methyl methacrylate monomer: 25% by mass) was used instead of B1. The same method is used to obtain particles. Using the obtained pellets, evaluations of solvent resistance, warpage, and hardness were performed. As a result, the solvent resistance drop test was X, the solvent resistance repeat test was the 9th time, and the solvent resistance rating was -. And the warpage is 1.5, the injection pressure is 227MPa, and the pencil hardness is 2H. From these results, it can be seen that the solvent resistance of Comparative Example 5 is poor.
