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1. 发明授权

US10676606B2 Methacrylic resin composition and injection-molded article 有权
公开(公告)号：US10676606B2
公开(公告)日：2020-06-09
申请号：US16079420
申请日：2017-02-23
申请人： KURARAY CO., LTD.
发明人： Yasuhito Kitade , Hiroshi Ozawa
IPC分类号： C08L33/12 , C08F220/14 , C08F220/06 , C08F220/18 , C08L33/08
摘要： A methacrylic resin composition comprising not less than 90% by mass of a methacrylic resin, wherein the methacrylic resin comprises 95 to 100% by mass of methyl methacrylate monomer units and 0 to 5% by mass of acrylate monomer units, the methacrylic resin has an Mw of 57000 to 90000, Mw representing a weight-average molecular weight, and a ratio Mw/Mn of not more than 1.9, Mn representing a number-average molecular weight, the methacrylic resin composition has an absolute value of a difference between YI4 and YI2 of not more than 3, YI4 representing a yellow index at an optical path length of 200 mm of an injection-molded article obtained at a cylinder temperature of 280° C. in a molding cycle of 4 minutes, YI2 representing a yellow index at an optical path length of 200 mm of an injection-molded article obtained at a cylinder temperature of 280° C. in a molding cycle of 2 minutes, and meets a relationship represented by Formula (B) and Formula (C): R≥11 Formula (B) 0.8

2. 发明申请

US20150191562A1 METHOD FOR PRODUCING (METH)ACRYLIC RESIN COMPOSITION 有权
标题翻译：生产（甲基）丙烯酸树脂组合物的方法
公开(公告)号：US20150191562A1
公开(公告)日：2015-07-09
申请号：US14411653
申请日：2013-06-28
申请人： KURARAY CO., LTD.
发明人： Hiroshi Ozawa , Shouji Tanaka , Yasuhito Kitade
IPC分类号： C08F220/18 , G02B1/04
CPC分类号： C08F220/18 , C08F2/01 , C08F2/02 , C08F6/005 , C08F120/14 , C08F220/14 , G02B1/045 , C08L33/12 , C08F210/14
摘要： A method of producing a (meth)acrylic resin composition. The method comprises a step of continuously feeding a monomer mixture comprising 80 to 100% by mass of methyl methacrylate and 20 to 0% by mass of an alkyl acrylate to a tank reactor and bulk polymerizing the monomer mixture until obtaining a polymerization conversion of 40 to 70% by mass to prepare a reaction product; continuously discharging the reaction product, and heating the reaction product to 200° C. to 270° C. with a heater, and then separating the unreacted monomer with a extruder equipped with a vent; and transferring the separated unreacted monomer entrained by an inert gas flow to reuse the separated unreacted monomer as a raw material of the monomer mixture.
摘要翻译：一种（甲基）丙烯酸树脂组合物的制造方法。该方法包括将包含80〜100质量％的甲基丙烯酸甲酯和20〜0质量％的丙烯酸烷基酯的单体混合物连续进料到釜式反应器中并将该单体混合物本体聚合直至获得40〜 70质量％以制备反应产物; 连续排出反应产物，并用加热器将反应产物加热至270℃，然后用装有排气口的挤出机分离未反应的单体; 并转移被惰性气流夹带的分离的未反应单体，以重新使用分离的未反应单体作为单体混合物的原料。

3. 发明申请

US20150158963A1 METHOD FOR PRODUCING (METH)ACRYLIC RESIN COMPOSITION 审中-公开
标题翻译：生产（甲基）丙烯酸树脂组合物的方法
公开(公告)号：US20150158963A1
公开(公告)日：2015-06-11
申请号：US14411735
申请日：2013-06-28
申请人： KURARAY CO., LTD.
发明人： Hiroshi Ozawa , Shouji Tanaka , Yasuhito Kitade
IPC分类号： C08F220/18
CPC分类号： C08F220/18 , C08F2/01 , C08F2/02 , C08F2/38 , C08F6/005 , C08L33/12
摘要： A method of producing a (meth)acrylic resin composition. The method comprises a step of continuously feeding a reaction raw material including a chain transfer agent, a radical polymerization initiator and a monomer mixture comprising 80 to 100% by mass of methyl methacrylate and 20 to 0% by mass of an alkyl acrylate to a tank reactor through two or more feeding ports; a step of bulk polymerizing the monomer mixture in the tank reactor until a polymerization conversion of 40 to 70% by mass to prepare a reaction product; and a step of removing the monomer mixture from the reaction product. The perfect mixing time (θM [hr]) of the tank reactor, the half-life (τ1/2 [hr]) of the radical polymerization initiator at the temperature in the tank reactor, the stirring power (PV [kW/m3]) of the tank reactor, the mean residence time (θ [hr]) of the reaction raw material in the tank reactor, and the concentration (I [ppm]) of the radical polymerization initiator in the reaction raw material satisfy the following relationships: θM>τ1/2, and PV×θ×I×τ1/2
摘要翻译：一种（甲基）丙烯酸树脂组合物的制造方法。该方法包括将含有80〜100质量％的甲基丙烯酸甲酯和20〜0质量％的丙烯酸烷基酯的反应原料连续进料到包含链转移剂，自由基聚合引发剂和单体混合物的步骤，反应器通过两个或多个进料口; 在罐式反应器中本体聚合单体混合物直至聚合转化率为40〜70质量％以制备反应产物的步骤; 以及从反应产物中除去单体混合物的步骤。罐式反应器的完美混合时间（＆amp; M; hr），釜反应器温度下自由基聚合引发剂的半衰期（τ1/ 2 [hr]），搅拌功率（PV [kW / m3]），反应原料在反应釜中的平均停留时间（＆amp; tt; [hr]）和反应原料中自由基聚合引发剂的浓度（I [ppm]）满足以下关系：＆amp; t; M>τ1/ 2，PV×＆Thetas;×I×τ1/ 2 <4。

4. 发明授权

US10526430B2 Methacrylic resin or methacrylic resin composition 有权
公开(公告)号：US10526430B2
公开(公告)日：2020-01-07
申请号：US15323016
申请日：2015-06-30
申请人： KURARAY Co., Ltd.
发明人： Atsuhiro Nakahara , Toru Abe , Toru Takahashi , Hiroshi Ozawa
IPC分类号： C08F20/18 , C08L33/12
摘要： A methacrylic resin composition comprises not less than 90% by mass and not more than 100% by mass of a methacrylic resin [A] having: the total content of a structural unit derived from methyl methacrylate of not less than 90% by mass; a molecular weight MA of not less than 30000 and not more than 100000 in terms of polystyrene corresponding to the retention time indicating the value of the maximum strength in a chromatogram obtained by gel permeation chromatography; the area SgA of a region enclosed by an approximate curve obtained by fitting the data of a range indicating the strength of not less than 70% relative to the value of the maximum strength to a Gaussian function by the method of nonlinear least squares and the base line of the chromatogram of 45 to 80% of the area SA enclosed by the chromatogram and its base line; and the ratio MwgA/MngA of a weight average molecular weight MwgA to a number average molecular weight MngA of not less than 1.01 and not more than 1.20 in terms of polystyrene computed based on an approximate curve obtained by the above fitting.

5. 发明授权

US10184015B2 Process for producing (meth)acrylic resin composition 有权
公开(公告)号：US10184015B2
公开(公告)日：2019-01-22
申请号：US15553714
申请日：2016-02-26
申请人： KURARAY Co., Ltd.
发明人： Hiroshi Ozawa , Yasuhito Kitade , Shouji Tanaka
IPC分类号： C08F6/28 , C08F20/14 , C08F2/02 , C08F6/10 , C08F220/14
摘要： A method for producing a (meth)acrylic resin composition, comprising: continuously feeding reaction starting materials to a tank reactor, the reaction starting materials comprising a polymerizable monomer component, a chain transfer agent and a radical polymerization initiator, the polymerizable monomer component comprising 50 to 100% by mass of methyl methacrylate, 0 to 20% by mass of an acrylic acid alkyl ester and 0 to 30% by mass of an additional monomer; conducting bulk polymerization of the polymerizable monomer component at a polymerization conversion ratio of 40 to 70% by mass to obtain a liquid containing a (meth)acrylic resin; continuously feeding the resulting liquid to a vented extruder to separate volatile component from the (meth)acrylic resin; conducting distillation using an atmospheric distillation column to separate the volatile component into a high boiling fraction (C1) and a low boiling fraction (A1); and conducting distillation using a vacuum distillation column having a pressure of −50 kPaG to −101 kPaG at the top of the vacuum distillation column to separate the high boiling fraction (C1) into a high boiling fraction (C2) and a low boiling fraction (A2); reusing the low boiling fraction (A1) and the low boiling fraction (A2) as part of the reaction starting materials.

6. 发明授权

US10017587B2 Process for producing (meth)acrylic resin composition 有权
公开(公告)号：US10017587B2
公开(公告)日：2018-07-10
申请号：US15539919
申请日：2015-12-25
申请人： KURARAY Co., Ltd.
发明人： Hiroshi Ozawa , Yasuhito Kitade , Shouji Tanaka
IPC分类号： C08F2/00 , C08F4/00 , C08F6/22 , B01J19/18 , C08F6/00
CPC分类号： C08F6/001 , C08F2/02 , C08F2/38 , C08F2/40 , C08F6/005 , C08F6/26 , C08F20/18 , C08J11/02 , C08L33/12
摘要： A method for producing a (meth)acrylic resin composition, the method comprising continuously feeding a polymerizable monomer component comprising 50 to 100% by mass of methyl methacrylate, 0 to 20% by mass of an acrylic acid alkyl ester and 0 to 30% by mass of an additional monomer, a chain transfer agent, and a radical polymerization initiator to a tank reactor; conducting bulk polymerization of the polymerizable monomer component at a polymerization conversion ratio of 40 to 70% by mass to obtain a liquid containing a (meth)acrylic resin; continuously feeding the liquid to a vented extruder to separate a volatile component from the (meth)acrylic resin; continuously feeding the separated volatile component to a distillation column to obtain a fraction containing methyl methacrylate; adding a polymerization inhibitor to the fraction; and reusing the fraction which contains the polymerization inhibitor as part of the polymerizable monomer component.

7. 发明授权

US09914796B2 Method for producing (meth)acrylic resin composition 有权
公开(公告)号：US09914796B2
公开(公告)日：2018-03-13
申请号：US14411653
申请日：2013-06-28
申请人： KURARAY CO., LTD.
发明人： Hiroshi Ozawa , Shouji Tanaka , Yasuhito Kitade
IPC分类号： C08F220/18 , C08F220/14 , C08F6/28 , C08F2/02 , G02B1/04 , C08F6/00 , C08F2/01 , C08F120/14
CPC分类号： C08F220/18 , C08F2/01 , C08F2/02 , C08F6/005 , C08F120/14 , C08F220/14 , G02B1/045 , C08L33/12 , C08F210/14
摘要： A method of producing a (meth)acrylic resin composition. The method comprises a step of continuously feeding a monomer mixture comprising 80 to 100% by mass of methyl methacrylate and 20 to 0% by mass of an alkyl acrylate to a tank reactor and bulk polymerizing the monomer mixture until obtaining a polymerization conversion of 40 to 70% by mass to prepare a reaction product; continuously discharging the reaction product, and heating the reaction product to 200° C. to 270° C. with a heater, and then separating the unreacted monomer with a extruder equipped with a vent; and transferring the separated unreacted monomer entrained by an inert gas flow to reuse the separated unreacted monomer as a raw material of the monomer mixture.

8. 发明申请

US20150299449A1 METHACRYLIC RESIN COMPOSITION 有权
标题翻译：甲基丙烯酸树脂组合物
公开(公告)号：US20150299449A1
公开(公告)日：2015-10-22
申请号：US14441096
申请日：2013-11-08
申请人： KURARAY CO., LTD.
发明人： Hiroshi Ozawa , Toru Takahashi
IPC分类号： C08L33/12 , F21V8/00
CPC分类号： C08L33/12 , C08F220/14 , C08L53/00 , C08L2201/10 , C08L2203/20 , C08L2205/025 , G02B1/04 , G02B6/0066 , Y10T428/1036 , Y10T428/1059 , C08L33/10 , C08F2220/1825 , C08F2220/185
摘要： A methacrylic resin composition comprising 10 to 99 parts by mass of a methacrylic resin (A) comprising 80% by mass or more of a methyl methacrylate unit, and 90 to 1 part by mass of a block copolymer (B) comprising 10 to 60% by mass of a methacrylic acid ester polymer block (b1) and 90 to 40% by mass of an acrylic acid ester polymer block (b2), wherein the total of the methacrylic resin (A) and the block copolymer (B) is 100 parts by mass, wherein a weight-average molecular weight Mw(A) of the methacrylic resin (A), a maximum weight-average molecular weight Mw(b1) of the methacrylic acid ester polymer block (b1) and a maximum weight-average molecular weight Mw(b2) of the acrylic acid ester polymer block (b2) satisfy (1): 0.5≦Mw(A)/Mw(b1)≦2.5 and (2): 40000≦Mw(b2)≦120000.
摘要翻译：一种甲基丙烯酸系树脂组合物，其含有10〜99质量份含有甲基丙烯酸甲酯单元80质量％以上的甲基丙烯酸系树脂（A）和90〜1质量份的含有10〜60重量％的甲基丙烯酸酯聚合物嵌段（b1）和90〜40质量％的丙烯酸酯聚合物嵌段（b2），其中甲基丙烯酸系树脂（A）和嵌段共聚物（B）的合计为100份，其中甲基丙烯酸系树脂（A）的重均分子量Mw（A），甲基丙烯酸酯聚合物嵌段（b1）的最大重均分子量Mw（b1）和最大重均分子量丙烯酸酯聚合物嵌段（b2）的重量Mw（b2）满足（1）：0.5＆nlE; Mw（A）/ Mw（b1）＆nlE; 2.5和（2）：40000＆nlE; Mw（b2）＆nlE; 120000。

9. 发明申请

US20150148508A1 (METH) ACRYLIC RESIN COMPOSITION 审中-公开
标题翻译：（METH）丙烯酸树脂组合物
公开(公告)号：US20150148508A1
公开(公告)日：2015-05-28
申请号：US14397366
申请日：2013-04-22
申请人： KURARAY CO., LTD.
发明人： Takuro Niimura , Hiroyuki Konishi , Hiroshi Ozawa , Hidemi Kurita , Hideyuki Tamura
IPC分类号： C08J5/00
CPC分类号： C08J5/00 , B29C45/0001 , C08F220/18 , C08J2333/12 , C08L33/12
摘要： A (meth)acrylic resin composition comprising not less than 99.5% by mass of (meth)acrylic resin composed of 80 to 100% by mass of a structural unit derived from methyl methacrylate and 0 to 20% by mass of a structural unit derived from acrylic acid ester, wherein a difference between YI4 and YI1 is not more than 3, in which the YI4 is a yellowness index at optical path length 200 mm of an article obtained by injection molding of the (meth)acrylic resin composition at a cylinder temperature of 280° C. and a molding cycle of 4 minutes, and the YI1 is a yellowness index at optical path length 200 mm of an article obtained by injection molding of the (meth)acrylic resin composition at a cylinder temperature of 280° C. and a molding cycle of 1 minute; and the (meth)acrylic resin composition has a melt flow rate under conditions of 230° C. and 3.8 kg load of not less than 25 g/10 min.
摘要翻译：一种（甲基）丙烯酸树脂组合物，其包含不小于99.5质量％的由（甲基）丙烯酸树脂组成的（甲基）丙烯酸树脂，其由衍生自甲基丙烯酸甲酯的结构单元为80〜100质量％，衍生自甲基丙烯酸甲酯的结构单元为0〜20质量％丙烯酸酯，其中YI4和YI1之间的差不大于3，其中YI4是在（3）丙烯酸树脂组合物在气缸温度下注射成型获得的物品的光程长度200mm处的黄度指数为280℃，成型周期为4分钟，YI1为在（280℃）下，在280℃的温度下注射成型（甲基）丙烯酸树脂组合物得到的制品的光程长度为200mm处的黄度指数。和1分钟的成型周期; （甲基）丙烯酸树脂组合物在230℃，3.8kg负荷条件下的熔体流动速率不低于25g / 10分钟。

10. 发明授权

US09920142B2 Production method of (meth)acrylic resin composition 有权
公开(公告)号：US09920142B2
公开(公告)日：2018-03-20
申请号：US15116676
申请日：2015-02-06
申请人： KURARAY CO., LTD.
发明人： Yasuhito Kitade , Hiroshi Ozawa , Shouji Tanaka
IPC分类号： C08F20/68 , C08F2/02 , C08F220/14 , C08F220/18 , C08F20/14 , C08F120/14 , C08L33/06
CPC分类号： C08F20/68 , C08F2/02 , C08F20/14 , C08F120/14 , C08F220/14 , C08F220/18 , C08L33/06
摘要： A (meth)acrylic resin composition is obtained by a method that comprises: preparing a liquid starting material (A) comprising methyl methacrylate, an acrylic acid alkyl ester and a chain transfer agent, having a mass ratio of the acrylic acid alkyl ester to the methyl methacrylate of 0/100 to 20/80, and having a dissolved oxygen concentration of not more than 50 ppm, preparing a liquid starting material (B) comprising a radical polymerization initiator, a polymerization inhibitor and methyl methacrylate, and having been maintained at a temperature of not more than 10° C. in the presence of oxygen, continuously feeding the liquid starting material (A) and the liquid starting material (B) into a tank reactor, allowing bulk polymerization to proceed in the tank reactor at a polymerization conversion ratio of 40 to 70% by mass to give a reaction product, and continuously discharging the reaction product from the tank reactor.

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