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公开(公告)号：US5552457A
公开(公告)日：1996-09-03
申请号：US526351
申请日：1995-09-11
CPC分类号： C08J3/226 , C08K3/04 , C08J2409/00 , C08J2465/00
摘要： By utilizing the process of the present invention a carbon black/resin masterbatch powder can be easily prepared on a commercial scale. This invention more specifically discloses a process for making a resin/carbon black masterbatch powder which comprises the steps of: (1) mixing the carbon black and the resin in an aqueous medium at an elevated temperature to produce an aqueous dispersion, with the proviso that the elevated temperature is above the melting point of the resin in the case of crystalline resins and with the proviso that the elevated temperature is above the softening point of the resin in the case of amorphous resins; (2) cooling the aqueous dispersion to a temperature which is below the melting point or the softening point of the resin; and (3) recovering the masterbatch powder from the aqueous dispersion. By utilizing the technique of this invention resin-composite particulates of syndiotactic-1,2-polybutadiene and carbon black can be easily prepared. Such resin-composite particulates are reported to be useful in making tire tread formulations which provide improved tire performance characteristics on ice and snow.
摘要翻译： 通过利用本发明的方法，可以容易地以商业规模制备炭黑/树脂母料粉末。 本发明更具体地公开了一种制备树脂/炭黑母料粉末的方法，该方法包括以下步骤：（1）将炭黑和树脂在水性介质中在高温下混合以产生水分散体，条件是 在结晶树脂的情况下，升高的温度高于树脂的熔点，条件是在无定形树脂的情况下，升高的温度高于树脂的软化点; （2）将水分散体冷却至低于树脂的熔点或软化点的温度; 和（3）从水分散体中回收母料粉末。 通过利用本发明的技术，可以容易地制备间同立构1,2-聚丁二烯和炭黑的树脂复合颗粒。 据报道，这种树脂复合材料颗粒可用于制造轮胎胎面制剂，其在冰雪上提供改善的轮胎性能特征。
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公开(公告)号：US4792589A
公开(公告)日：1988-12-20
申请号：US10876
申请日：1987-02-04
CPC分类号： C07G17/004 , C08K5/36
摘要： Superior vulcanization agents for rubber are prepared by reacting sulfur with an olefin at 140.degree.-160.degree. C. in an aqueous reaction media in the presence of a basic catalyst and a dispersing agent.
摘要翻译： 通过在碱性催化剂和分散剂的存在下，在含水反应介质中，在140-116℃下使硫与烯烃反应来制备用于橡胶的优良硫化剂。
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公开(公告)号：US5732862A
公开(公告)日：1998-03-31
申请号：US800754
申请日：1997-02-14
申请人： Charles L. Bull
发明人： Charles L. Bull
CPC分类号： A61C19/006
摘要： A material holding apparatus comprising a receptacle and an integrated finger mount. A lip or groove is circumferentially added to disposable plastic cups used in the dental profession. The receptacle preferably includes projections which mate by snap fit with either the lip or groove of the disposable cups. The finger mount is made of a flexible material and is made with two arms extending from the base of the receptacle, arcing to form a ring. The ends of the arms approach one another, bur remain flexible so as to fit a wide variety of finger sizes. Alternatively, a single band may be used as the finger mount. With either embodiment, the finger mount is slipped over the finger of the use, usually a dental professional.
摘要翻译： 一种材料保持装置，包括一个插座和一个集成的手指支架。 在牙科行业使用的一次性塑料杯中周向添加唇缘或凹槽。 容器优选地包括通过与一次性杯的唇缘或凹槽卡扣配合而配合的突起。 手指安装件由柔性材料制成并且由从容座的底部延伸的两个臂制成，起弧形成环。 手臂的端部彼此接近，保持弹性，以适应各种各样的手指尺寸。 或者，单个带可以用作手指座。 在任一实施例中，手指支架滑过使用的手指，通常是牙科专业人员。
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公开(公告)号：US4739036A
公开(公告)日：1988-04-19
申请号：US896688
申请日：1986-08-15
IPC分类号： C08K7/16 , C07G99/00 , C08K5/00 , C08K5/36 , C08K7/00 , C08K9/00 , C08K11/00 , C08L7/00 , C08L21/00 , C08G75/00
CPC分类号： C07G17/004 , C08K5/36
摘要： Superior vulcanization agents for rubber are prepared by reacting sulfur with an olefin at 140.degree.-160.degree. C. in an aqueous reaction media in the presence of a basic catalyst and a dispersing agent.
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公开(公告)号：US5112227A
公开(公告)日：1992-05-12
申请号：US600585
申请日：1990-10-19
申请人： Charles L. Bull
发明人： Charles L. Bull
CPC分类号： A61C19/006 , A61B50/20 , A61B2017/00438
摘要： A materials holding apparatus consisting of a receptacle, flange and mount for use in the practice of dentistry capable of bringing the necessary implements to the operation at hand and making the requisite materials available for timely use, which can be worn on the finger or thumb of both left-handed and right-handed individuals with equal ease and remains stable and does not slip and slide around the finger or thumb.
摘要翻译： 一种材料保持装置，包括用于实践牙科的容器，法兰和安装座，其能够将必要的器具带到手头的操作上，并使必要的材料可及时使用，其可以佩戴在手指或拇指上 左撇子和右撇子都能够平静，保持稳定，不会滑动并滑动手指或拇指。
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公开(公告)号：US4902775A
公开(公告)日：1990-02-20
申请号：US228425
申请日：1988-08-05
CPC分类号： C07G17/004 , C08K5/36
摘要： Superior vulcanization agents for rubber are prepared by reacting sulfur with at least one olefin at 120.degree.-200.degree. C. in an aqueous reaction media with agitation. In one embodiment, the vulcanization agent comprises a sulfur/olefin adduct having from about 39% to about 46% by weight of free elemental sulfur level.
摘要翻译： 用于橡胶的优良硫化剂通过在120℃-200℃下在含水反应介质中使硫与至少一种烯烃反应来制备。 在一个实施方案中，硫化剂包含具有约39重量％至约46重量％的游离元素硫含量的硫/烯烃加合物。
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公开(公告)号：US5889257A
公开(公告)日：1999-03-30
申请号：US78242
申请日：1998-05-13
申请人： Harry W. Schader , Charles L. Bull
发明人： Harry W. Schader , Charles L. Bull
CPC分类号： H05B3/00 , A61C13/0028 , H05B2203/03
摘要： A heated dental knife for trimming thermoplastic dental trays which has a heat sink temperature stabilizer and heating element designed to maintain a pre-selected blade temperature without adjustments under normal use in cutting such dental trays.
摘要翻译： 一种用于修整热塑性牙盘的加热牙刀，其具有散热器温度稳定器和加热元件，其设计成在切割这种牙盘时在正常使用下保持预选叶片温度而不进行调节。
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公开(公告)号：US5169315A
公开(公告)日：1992-12-08
申请号：US880881
申请日：1992-05-08
申请人： Charles L. Bull
发明人： Charles L. Bull
CPC分类号： A61C19/006 , A61B50/20 , A61B2017/00438
摘要： A materials holding apparatus consisting of a receptacle, flange, and mount for use in the practice of dentistry capable of bringing the necessary implements to the operation at hand and making the requisite materials available for timely use, which can be worn on the finger or thumb of both left-handed and right-handed individuals with equal ease and remains stable and does not slip and slide around the finger or thumb. A protective cap is used in conjunction with the finger mounted apparatus to reduce spilling or splattering of the materials contained in the receptacle.
摘要翻译： 一种材料保持装置，包括用于实践牙科的容器，凸缘和安装座，其能够将必要的工具带到手头的操作上，并使可以及时使用的必要材料可以佩戴在手指或拇指上 左撇子和右撇子的个体相当容易，并保持稳定，不会滑动并滑动手指或拇指。 保护盖与手指安装的装置结合使用，以减少容纳在容器中的材料的溢出或飞溅。
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