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公开(公告)号：US07056984B2
公开(公告)日：2006-06-06
申请号：US10144982
申请日：2002-05-15
IPC分类号： C08F291/02
CPC分类号： C08F291/02 , C08F265/04 , C08F265/06 , C08F279/02 , C08L51/003 , C08L51/04 , C08F220/14 , C08L2666/04
摘要： Disclosed is an acrylic syrup containing a vinyl monomer (A) of methyl methacrylate and a polymerized solid component (B) which is a high polymer of said vinyl monomer and has a weight average molecular weight of from 30,000 to 2,000,000 as measured by the GPC and a viscosity at 25° C. of from 0.1 to 50 Pa·s, wherein at least part of said polymerized solid component (B) is a grafted rubber obtained by graft-polymerizing said vinyl monomer with a rubbery polymer, and said grafted rubber has a large branching coefficient. The acrylic resin molded articles obtained from the acrylic syrup exhibit excellent impact resistance.
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公开(公告)号：US07910659B2
公开(公告)日：2011-03-22
申请号：US11255994
申请日：2005-10-24
IPC分类号： C08L51/00 , C08L51/04 , C08L53/02 , C08F257/02
CPC分类号： C08F291/02 , C08F265/04 , C08F265/06 , C08F279/02 , C08L51/003 , C08L51/04 , C08F220/14 , C08L2666/04
摘要： Disclosed is an acrylic syrup containing a vinyl monomer (A) of methyl methacrylate and a polymerized solid component (B) which is a high polymer of said vinyl monomer and has a weight average molecular weight of from 30,000 to 2,000,000 as measured by the GPC and a viscosity at 25° C. of from 0.1 to 50 Pa·s, wherein at least part of said polymerized solid component (B) is a grafted rubber obtained by graft-polymerizing said vinyl monomer with a rubbery polymer, and said grafted rubber has a large branching coefficient. The acrylic resin molded articles obtained from the acrylic syrup exhibit excellent impact resistance.
摘要翻译： 公开了一种含有甲基丙烯酸甲酯的乙烯基单体（A）和作为所述乙烯基单体的高聚物的聚合固体组分（B）的丙烯酸树脂浆料，其通过GPC测量的重均分子量为30,000至2,000,000; 25℃下的粘度为0.1〜50Pa·s，其中，所述聚合固体成分（B）的至少一部分为通过橡胶状聚合物使所述乙烯基单体接枝聚合得到的接枝橡胶，所述接枝橡胶具有 分支系数大。 由丙烯酸浆液得到的丙烯酸树脂成形品表现出优异的耐冲击性。
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公开(公告)号：US20060089463A1
公开(公告)日：2006-04-27
申请号：US11255994
申请日：2005-10-24
IPC分类号： C08F263/00 , C08F253/00 , C08F265/04
CPC分类号： C08F291/02 , C08F265/04 , C08F265/06 , C08F279/02 , C08L51/003 , C08L51/04 , C08F220/14 , C08L2666/04
摘要： Disclosed is an acrylic syrup containing a vinyl monomer (A) of methyl methacrylate and a polymerized solid component (B) which is a high polymer of said vinyl monomer and has a weight average molecular weight of from 30,000 to 2,000,000 as measured by the GPC and a viscosity at 25° C. of from 0.1 to 50 Pa·s, wherein at least part of said polymerized solid component (B) is a grafted rubber obtained by graft-polymerizing said vinyl monomer with a rubbery polymer, and said grafted rubber has a large branching coefficient. The acrylic resin molded articles obtained from the acrylic syrup exhibit excellent impact resistance.
摘要翻译： 公开了一种含有甲基丙烯酸甲酯的乙烯基单体（A）和作为所述乙烯基单体的高聚物的聚合固体组分（B）的丙烯酸树脂浆料，其通过GPC测量的重均分子量为30,000至2,000,000; 在25℃下的粘度为0.1至50Pa.s，其中至少部分所述聚合的固体组分（B）是通过用橡胶状聚合物将所述乙烯基单体接枝聚合而获得的接枝橡胶，并且所述接枝橡胶具有 分支系数大。 由丙烯酸浆液得到的丙烯酸树脂成形品表现出优异的耐冲击性。
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公开(公告)号：US5980790A
公开(公告)日：1999-11-09
申请号：US27970
申请日：1998-02-23
IPC分类号： C08F2/06 , C08F212/08 , C08F220/14 , B29C47/76
CPC分类号： C08F220/14 , C08F212/08
摘要： A high quality copolymer of styrene and methyl methacrylate is economically produced by polymerizing styrene and methyl methacrylate in a homogeneous solution of raw materials comprising methyl methacrylate, styrene, and an antioxidant, while the solution of raw materials is continuously supplied to a polymerization reactor including at least one complete-mixing type reaction tank, continuously removing the polymerization product from the polymerization reactor, supplying the polymerization product removed from the polymerization reactor directly to an extruder having a plurality of vents, and extruding a copolymer from the extruder, while volatile matter are removed through the plurality of vents.
摘要翻译： 苯乙烯和甲基丙烯酸甲酯的高品质共聚物通过在包含甲基丙烯酸甲酯，苯乙烯和抗氧化剂的原料的均匀溶液中聚合苯乙烯和甲基丙烯酸甲酯而经济地制备，同时将原料溶液连续供给到包括 至少一个完全混合型反应槽，从聚合反应器中连续除去聚合产物，将从聚合反应器中除去的聚合产物直接供给到具有多个通风口的挤出机中，并从挤出机挤出共聚物，而挥发物为 通过多个通风口去除。
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公开(公告)号：US5719242A
公开(公告)日：1998-02-17
申请号：US757317
申请日：1996-11-27
CPC分类号： C08F20/14
摘要： A process is provided for preparing a high-quality methyl methacrylate polymer by polymerizing a monomer comprising methyl methacrylate as a main component in the presence of a radical polymerization initiator, a chain transfer agent, and 5 to less than 10 wt. % methanol. The polymerization is carried out in a uniform solution. According to this process, a methyl methacrylate polymer is obtained which reduces the generation of silver streaks, voids, coloring, odor and the like at the time of thermal molding.
摘要翻译： 提供了一种制备高质量甲基丙烯酸甲酯聚合物的方法，该方法是在自由基聚合引发剂，链转移剂和5至小于10重量％的存在下，聚合包含甲基丙烯酸甲酯作为主要成分的单体。 ％甲醇。 聚合在均匀的溶液中进行。 根据该方法，得到甲基丙烯酸甲酯聚合物，其在热成型时减少了银条纹，空隙，着色，气味等的产生。
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公开(公告)号：US5708133A
公开(公告)日：1998-01-13
申请号：US642797
申请日：1996-05-03
CPC分类号： C08F6/10
摘要： A process for purifying a polymer by separating and removing volatile components from a polymer composition containing the volatile components, which comprises: (a) heating the polymer composition containing a methanol solvent to a temperature of 120.degree. to 240.degree. C. by a heater, wherein an internal pressure the heater is maintained at 8 to 35 kg/cm.sup.2 G; (b) discharging the heated polymer composition into a tank in which pressure is maintained at -0.7 to 1.0 kg/cm.sup.2 G, and then separating and collecting most of the volatile components to lower the concentration of the solvent in the remaining volatile components in the polymer composition to 0.5% by weight or less; and (c) feeding the resultant polymer composition to a vent extruder maintained such that a barrel temperature at an inner side thereof is 160.degree. to 280.degree. C. and pressure in a vent portion is 5 to 400 Torr, and then extruding the polymer composition to lower the content of the remaining volatile components in the composition to 1% by weight or less. Alternatively, between the above-mentioned steps (b) and (c), there can be interposed a step (b') of introducing an inert gas into the polymer composition before heating or during heating, or in the vicinity of the polymer composition which is being discharged into the tank. By using this process, a polymer can easily be separated and purified, so that a high-quality polymer, particularly a methyl methacrylate polymer, can be efficiently manufactured, without polymer discoloration.
摘要翻译： 一种通过从含有挥发性组分的聚合物组合物中分离除去挥发性成分来纯化聚合物的方法，其包括：（a）通过加热器将含有甲醇溶剂的聚合物组合物加热至120℃至240℃的温度， 其中所述加热器的内部压力保持在8至35kg / cm2G; （b）将加热的聚合物组合物排放到压力保持在-0.7至1.0kg / cm2G的罐中，然后分离和收集大部分挥发性组分以降低聚合物中其余挥发性组分中溶剂的浓度 组成为0.5重量％以下; 和（c）将得到的聚合物组合物供给到保持其内侧的机筒温度为160℃至280℃的排气挤出机，并且排气部分中的压力为5至400托，然后挤出聚合物组合物 将组合物中剩余挥发性成分的含量降低至1重量％以下。 或者，在上述步骤（b）和（c）之间，可以插入在加热或加热之前或在聚合物组合物附近向聚合物组合物中引入惰性气体的步骤（b'） 正在排入坦克。 通过使用该方法，可以容易地分离和纯化聚合物，从而可以有效地制造高质量聚合物，特别是甲基丙烯酸甲酯聚合物，而不会发生聚合物变色。
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公开(公告)号：US5599888A
公开(公告)日：1997-02-04
申请号：US324270
申请日：1994-10-17
CPC分类号： C08F20/14
摘要： A process is provided for preparing a high-quality methyl methacrylate polymer by polymerizing a monomer comprising methyl methacrylate as a main component in the presence of a radical polymerization initiator, a chain transfer agent, and a small amount of methanol as a solvent. The polymerization is carried out in a uniform solution at a temperature of 90.degree. to 180.degree. C. so that a monomer conversion of 40 to 90 mol % is attained. According to this process, a methyl methacrylate polymer is obtained which reduces the generation of silver streaks, voids, coloring, odor and the like at the time of thermal molding.
摘要翻译： 提供了一种通过在自由基聚合引发剂，链转移剂和少量甲醇作为溶剂的存在下聚合包含甲基丙烯酸甲酯作为主要成分的单体来制备高质量甲基丙烯酸甲酯聚合物的方法。 聚合在90〜180℃的均匀溶液中进行，得到40〜90摩尔％的单体转化率。 根据该方法，得到甲基丙烯酸甲酯聚合物，其在热成型时减少了银条纹，空隙，着色，气味等的产生。
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公开(公告)号：US06448354B1
公开(公告)日：2002-09-10
申请号：US09696958
申请日：2000-10-27
IPC分类号： C08F2006
摘要： A methyl methacrylate syrup is produced by the steps of (1) preparing a starting material comprising methyl methacrylate or a monomer mixture mainly comprising methyl methacrylate, and dividing the starting material into 20 to 70% by weight of an initial charge and 30 to 80% by weight of an after-charge; (2) heating the initial charge in a reactor; (3) adding a whole protion of a chain transfer agent at the time when the initial charge reaches a reaction temperature; (4) adding the after-charge over 0.1 to 10 hours together with a polymerization initiator having a half-life of 10 to 300 seconds at the reaction temperature; (5) continuing the heating after the addition of the after-charge and the polymerization initiator is complete; and (6) adding a hindered phenol polymerization inhibitor at the time the heating is finished. The methyl methacrylate syrup thus produced is excellent in storage stability.
摘要翻译： 通过以下步骤制备甲基丙烯酸甲酯浆料：（1）制备包含甲基丙烯酸甲酯或主要包含甲基丙烯酸甲酯的单体混合物的原料，并将原料分成20至70重量％的初始电荷和30至80重量％ （重量）; （2）加热反应器中的初始装料; （3）在初始电荷达到反应温度时加入链转移剂的全部物质; （4）在反应温度下，将半衰期为10〜300秒的聚合引发剂与0.1〜10小时的后处理相加; （5）在加入后充电和聚合引发剂完成后继续加热; 和（6）在加热结束时加入受阻酚聚合抑制剂。 由此制备的甲基丙烯酸甲酯浆料的储存稳定性优异。
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公开(公告)号：US20130136547A1
公开(公告)日：2013-05-30
申请号：US13739848
申请日：2013-01-11
CPC分类号： B23C5/207 , B23C5/109 , B23C2200/0416 , B23C2200/085 , B23C2200/203 , B23C2200/205 , Y10T407/1924 , Y10T407/23
摘要： A cutting insert for a multifunctional endmill is capable of using three corners. The cutting insert includes a top surface and a bottom surface having an outer shape of a substantially polygonal shape and four side surfaces extending between the top surface and the bottom surface, a first side surface has a positive flank angle, a second side surface has a positive flank angle, a third side surface has the positive flank angle, the first side surface includes a first and a second component surfaces connected with each other so that the first side surface protrudes outward from a peripheral surface of the cutting insert, and a connection portion between a first and a second component surface extends between the top surface and the bottom surface.
摘要翻译： 用于多功能端铣刀的切削刀片能够使用三个角。 所述切削刀片包括顶表面和底表面，所述顶表面和底表面具有基本上多边形的外形和在所述顶表面和所述底表面之间延伸的四个侧表面，所述第一侧表面具有正侧面角，所述第二侧表面具有 正侧面角，第三侧面具有正侧面角，第一侧面包括彼此连接的第一和第二部件表面，使得第一侧表面从切削刀片的外周表面向外突出，并且连接 第一和第二部件表面之间的部分在顶表面和底表面之间延伸。
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公开(公告)号：US20050075466A1
公开(公告)日：2005-04-07
申请号：US10499120
申请日：2002-12-20
IPC分类号： C08G63/672 , C08J5/18 , C08K3/00 , C08L67/02 , C08L69/00
CPC分类号： C08L67/02 , C08G63/672 , C08K3/013 , C08L67/025 , C08L69/00 , C08L2666/18 , C08L2666/02
摘要： The invention provides a thermoplastic resin composition which is excellent in transparency, heat resistance, resistance to chemicals, and mechanical strength as well as moldability, printability, etc. The thermoplastic resin composition containing a polycarbonate resin in an amount of 2 to 99.5 wt. % and a polyester resin in an amount of 98 to 0.5 wt. %, wherein the polyester resin (B) contains diol units each having a cyclic acetal skeleton in an amount of 20 to 60 mol % with respect to total diol structural units.
摘要翻译： 本发明提供透明性，耐热性，耐化学品性，机械强度以及成型性，印刷性等优异的热塑性树脂组合物。含有2〜99.5重量％的聚碳酸酯树脂的热塑性树脂组合物。 ％的聚酯树脂和98〜0.5重量％的聚酯树脂。 ％，其中聚酯树脂（B）含有相对于二醇结构单元为20〜60摩尔％的环状缩醛骨架的二醇单元。
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