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公开(公告)号：US5191009A
公开(公告)日：1993-03-02
申请号：US584985
申请日：1990-09-20
IPC分类号： C08F2/16 , C08F2/30 , C08F257/02
CPC分类号： C08F257/02
摘要： The subject invention discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which involves:(1) free radical aqueous emulsion polymerizing at a pH of less than about 3.5, a monomer mixture which comprises based on 100 weight percent monomers: (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant; in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex; and in the presence of at least one seed polymer which is contains of repeat units which are derived from about 45 to about 85 weight percent vinyl aromatic monomers, from about 15 to about 50 weight percent alkyl acrylate monomers, and from about 1 to about 6 weight percent unsaturated carbonyl compounds; and(2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex.
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公开(公告)号：US5284905A
公开(公告)日：1994-02-08
申请号：US17166
申请日：1993-02-12
IPC分类号： C08F2/16 , C08F2/30 , C08F257/02 , C08K5/49 , C08K5/52
CPC分类号： C08F257/02
摘要： The subject invention discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which involves.(1) free radical aqueous emulsion polymerizing at a pH of less then about 3.5, a monomer mixture which comprises based on 100 weight percent monomers: (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant; in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex; and in the presence of at least one seed polymer which contains repeat units which are derived from about 45 to about 85 weight percent vinyl aromatic monomers, from about 15 to about 50 weight percent alkyl acrylate monomers, and from about 1 to about 6 weight percent unsaturated carbonyl compounds; and(2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex.
摘要翻译： 本发明公开了一种生产中和胶乳的方法，其可用于制造涉及的可水稀释涂层。 （1）在小于约3.5的pH下聚合的自由基水性乳液，单体混合物，其包含基于100重量％的单体：（a）约45至约85重量％的乙烯基芳族单体，（b）约15 至约50重量％的至少一种丙烯酸烷基酯单体，和（c）约1至约6重量％的至少一种不饱和羰基化合物; 在约0.5至4.0phm的至少一种磷酸酯表面活性剂的存在下; 在约0.5至4.0phm的至少一种水不溶性非离子表面活性剂的存在下制备胶乳; 并且在存在至少一种种子聚合物的存在下，该种子聚合物包含衍生自约45至约85重量％的乙烯基芳族单体，约15至约50重量％的丙烯酸烷基酯单体和约1至约6重量％的重复单元 不饱和羰基化合物; 和（2）用氨将胶乳中和到约7至约10.5的范围内的pH以产生中和的胶乳。
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3.发明授权
公开(公告)号：US5171768A
公开(公告)日：1992-12-15
申请号：US779665
申请日：1991-10-21
IPC分类号： C08F2/00 , C08F2/22 , C08F2/24 , C08F2/44 , C08F212/00 , C08F212/06 , C08F220/00 , C08F220/10 , C08F236/04 , C08F279/02
CPC分类号： C08F279/02
摘要： The present invention relates to a free radical emulsion polymerization process. The latex is prepared by polymerizing (a) at least one conjugated diene, (b) at least one non-carboxylic vinyl aromatic or aliphatic comonomer selected from the group consisting of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toleuene, acrylonitrile, methacrylonitrile, vinylidene chloride, ethyl acrylate, butyl acrylate, vinyl pyridine, methylmethacrylate, hexylacrylate, 2-ethyl hexyl acrylate or mixtures thereof, and (c) at least one ethylenically unsaturated carboxylic acid monomer selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, fumaric acid, 3-carboxyethylacrylate, itaconic acid or mixtures thereof. The process of the present invention is characterized by (a) initially polymerizing the non-carboxylic comonomer in the presence of the unsaturated carboxylic acid and in the absence of any conjugated diene to a conversion of 3 to 12 percent to form a partially polymerized latex; and thereafter (b) copolymerizing the conjugated diene with the unreacted non-carboxylic comonomer in the partially polymerized latex. The present process mitigates the formation of codimers of the conjugated diene and non-carboxylic comonomer. The present process also provides a latex having unique film forming characteristics and polymer morphology leading to unique film stiffness and stress-strain relationship.
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4.发明授权
公开(公告)号：US5516818A
公开(公告)日：1996-05-14
申请号：US311974
申请日：1994-09-26
申请人： Sun-Lin Chen , Tang H. Wong , Ramesh N. Gujarathi
发明人： Sun-Lin Chen , Tang H. Wong , Ramesh N. Gujarathi
CPC分类号： C08F6/003 , C08C1/04 , C08F6/16 , Y10S528/934
摘要： A process for achieving a significant reduction in the volatile organic compound content (VOC) of an aqueous polymerization system includes the steps of contacting the aqueous polymerization system with an organic solvent and allowing said organic solvent to be absorbed into polymer particles of said aqueous polymerization system, contacting said aqueous polymerization system and organic solvent with a gas or vapor at temperature and pressure conditions which cause mass transfer of the volatile organic compounds from said latex into said gas or vapor phase, and separating said gas or vapor from said aqueous polymerization system. The solvent is generally absorbed into the polymer particles of the latex and serves as a stripping aid, especially with respect to higher molecular weight compounds which tend to remain trapped in the polymer particles during conventional stripping processes. An important advantage of the invention is that it facilitates significantly enhanced VOC reduction using conventional stripping apparatus with only relatively minor modifications thereto. The improved stripping performance of the invention is achieved without any significant deleterious effect on colloidal stability, average polymer particle size, solids content or other important latex properties.
摘要翻译： 用于实现水性聚合体系的挥发性有机化合物含量（VOC）的显着降低的方法包括使水性聚合体系与有机溶剂接触并使所述有机溶剂吸收到所述水性聚合体系的聚合物颗粒中的步骤 在温度和压力条件下使所述含水聚合体系和有机溶剂与气体或蒸汽接触，所述条件使挥发性有机化合物从所述胶乳传质到所述气体或气相中，并将所述气体或蒸汽与所述水性聚合体系分离。 溶剂通常被吸收到胶乳的聚合物颗粒中，并且用作剥离助剂，特别是对于在常规剥离过程中倾向于保留在聚合物颗粒中的较高分子量化合物。 本发明的一个重要优点在于，它有利于使用常规剥离装置显着增强VOC的降低，只对其进行较小的修改。 实现了本发明的改进的汽提性能，而对胶体稳定性，平均聚合物粒度，固体含量或其它重要胶乳性质没有明显的有害影响。
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公开(公告)号：US07101922B2
公开(公告)日：2006-09-05
申请号：US10308596
申请日：2002-12-02
申请人： Sun-Lin Chen , Howard Allen Colvin
发明人： Sun-Lin Chen , Howard Allen Colvin
IPC分类号： C08J3/215
CPC分类号： C08J3/215 , B60C1/00 , B60C1/0016 , C08J3/005 , C08J3/226 , C08J2309/00 , C08J2321/00 , C08J2409/00 , C08K5/548 , C08L21/00
摘要： This invention relates to the preparation of a silica reinforced elastomer via preparation of a silica-elastomer masterbatch as a composite of synthetic silica and an emulsion polymerization prepared synthetic elastomer. Such masterbatch is prepared by introducing such silica and a silane into a latex of the synthetic elastomer and recovering the composite thereof The invention further includes a rubber composition of at least two elastomers wherein at least one of said elastomers is such masterbatched composite. A tire having a component of such rubber composition, particularly a tire tread, is specifically contemplated.
摘要翻译： 本发明涉及二氧化硅增强弹性体的制备，其通过制备二氧化硅 - 弹性体母料作为合成二氧化硅和乳液聚合制备的合成弹性体的复合物。 这种母料通过将这种二氧化硅和硅烷引入合成弹性体的胶乳中并回收其复合物来制备。本发明还包括至少两种弹性体的橡胶组合物，其中至少一种所述弹性体是这种母料复合材料。 特别考虑了具有这种橡胶组合物的组分，特别是轮胎胎面的轮胎。
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公开(公告)号：US07307121B2
公开(公告)日：2007-12-11
申请号：US10805457
申请日：2004-03-19
申请人： Ping Zhang , Sun-Lin Chen
发明人： Ping Zhang , Sun-Lin Chen
CPC分类号： C08L21/00 , C08L101/02 , Y02T10/862 , C08L2666/02
摘要： This invention discloses a method for preparing rubber compositions that exhibit unique combinations of properties that are desirable for tire tread applications for enhanced snow/ice and wet traction, low rolling resistance and increased treadwear performance in comparison with conventional silica compounds. Specifically, a high reactively silane coupling agent, such as a mercaptosilane, is used in combination with a silane coupling typically used for silica tread compounds such as bis(triethoxylsilylpropyl)disulfide to treat silica pellets in a hydrocarbon solvent at elevated temperatures. The treated silica is then blended with solution elastomer cement in a hydrocarbon solvent. The deposited reactive silanes partially react with the elastomer molecules forming a layer of polymer grafted on the silica surfaced. This structure significantly improves the silica retention during the steam stripping operation. Almost 100% (99+%) silica retention has been achieved by this invention. After solvent removal from steam stripping, the treated silica/elastomer mixer is dewatered and dried using conventional equipment such as shaker screens, expellers and expanders to form a well-dispersed silica masterbatch. This technique results in silica compounds with excellent silica dispersion and increased filler-polymer interaction, hence enhanced compound performance such as better physical properties, more desirable dynamic properties (low hysteresis at high temperatures and high hysteresis at low temperatures) and increased abrasion resistance.
摘要翻译： 本发明公开了一种制备橡胶组合物的方法，其与常规的二氧化硅化合物相比，具有独特的性能组合，其性能优选用于轮胎胎面用于增强的雪/冰和湿牵引力，低滚动阻力和增加的胎面性能。 具体地，高反应性硅烷偶联剂如巯基硅烷与通常用于二氧化硅胎面胶料如二（三乙氧基硅烷基丙基）二硫化物的硅烷偶联剂一起使用，以在高温下在烃溶剂中处理二氧化硅颗粒。 然后将处理过的二氧化硅与溶剂弹性体粘结剂在烃溶剂中混合。 沉积的反应性硅烷与弹性体分子部分反应，弹性体分子形成接枝在二氧化硅上的聚合物层。 该结构显着改善了汽提操作期间的二氧化硅保留。 通过本发明实现了近100％（99 +％）二氧化硅保留。 在从蒸汽汽提除去溶剂后，将处理过的二氧化硅/弹性体混合器脱水并用常规设备如振动筛，推进器和膨胀机进行干燥以形成良好分散的二氧化硅母料。 这种技术导致具有优异二氧化硅分散性和增加的填料 - 聚合物相互作用的二氧化硅化合物，因此提高了化合物性能，例如更好的物理性能，更理想的动态性能（高温下的低滞后和低温下的高迟滞）和增加的耐磨性。
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公开(公告)号：US20060128854A1
公开(公告)日：2006-06-15
申请号：US11343824
申请日：2006-01-31
申请人： Daniel Bowen , Thierry Materne , Sun-Lin Chen
发明人： Daniel Bowen , Thierry Materne , Sun-Lin Chen
CPC分类号： B60C1/0016 , C08J3/226 , C08J2321/00 , C08J2409/00 , C08K3/013 , C08K5/548 , C08L19/006 , C08L21/00 , C08L2666/08
摘要： The subject invention reveals a process for preparing a silica/rubber blend which comprises dispersing silica, a silica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from the organic solvent. It further reveals a tire having a tread that is made from such a silica/rubber blend.
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公开(公告)号：US20050022915A1
公开(公告)日：2005-02-03
申请号：US10630022
申请日：2003-07-30
申请人： Daniel Bowen , Thierry Materne , Sun-Lin Chen
发明人： Daniel Bowen , Thierry Materne , Sun-Lin Chen
CPC分类号： C08J3/226 , B60C1/0016 , C08J2321/00 , C08J2409/00 , C08K3/013 , C08K5/548 , C08L19/006 , C08L21/00 , C08L2666/08
摘要： The present invention relates to a technique to efficiently and effectively disperse silica throughout a rubbery polymer. By utilizing this technique mechanical mixing procedures that are energy intensive and require large capital investments in mixing equipment can be significantly reduced. By reducing the amount of shearing forces to which the rubber is subjected polymer degradation is also significantly reduced. The utilization of the technique of this invention also results in a uniform blend of the silica throughout the rubber and consequently better interaction between the silica and the rubber. This results in better physical properties, such as higher modulus. The subject invention more specifically discloses a process for preparing a silica/rubber blend which comprises dispersing silica, a silica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from the organic solvent. The present invention further reveals a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is comprised of the silica/rubber blend made by dispersing silica, a silica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from the organic solvent.
摘要翻译： 本发明涉及一种有效且有效地将二氧化硅分散在橡胶状聚合物中的技术。 通过利用这种技术，可以显着地减少能量密集的机械混合程序并且需要对混合设备进行大量投资。 通过减少橡胶经受聚合物降解的剪切力的量也显着降低。 本发明技术的利用也导致二氧化硅在整个橡胶中的均匀共混，从而改善二氧化硅和橡胶之间的相互作用。 这导致更好的物理性能，例如较高的模量。 本发明更具体地公开了一种制备二氧化硅/橡胶共混物的方法，其包括将二氧化硅，二氧化硅偶联剂和低分子量端基官能化二烯橡胶分散在常规橡胶状聚合物的水泥中，随后回收二氧化硅 /来自有机溶剂的橡胶混合物。 本发明进一步揭示了一种轮胎，其包括具有外圆周胎面的大致环形胎体，两个间隔开的胎圈，从胎圈到胎圈延伸的至少一个帘布层和从所述胎面径向延伸并将所述胎面连接到所述胎圈的侧壁，其中 所述胎面适于与地面接触，并且其中所述胎面由通过将二氧化硅，二氧化硅偶联剂和低分子量端基官能化二烯橡胶分散在常规橡胶状的水泥中制成的二氧化硅/橡胶混合物 聚合物，随后从有机溶剂中回收二氧化硅/橡胶共混物。
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公开(公告)号：US07572851B2
公开(公告)日：2009-08-11
申请号：US11343824
申请日：2006-01-31
IPC分类号： C08K5/54
CPC分类号： B60C1/0016 , C08J3/226 , C08J2321/00 , C08J2409/00 , C08K3/013 , C08K5/548 , C08L19/006 , C08L21/00 , C08L2666/08
摘要： The subject invention reveals a process for preparing a silica/rubber blend which comprises dispersing silica, a silica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from the organic solvent. It further reveals a tire having a tread that is made from such a silica/rubber blend.
摘要翻译： 本发明揭示了制备二氧化硅/橡胶共混物的方法，其包括将二氧化硅，二氧化硅偶联剂和低分子量端基官能化二烯橡胶分散在常规橡胶状聚合物的水泥中，随后回收二氧化硅/橡胶 从有机溶剂中混合。 它进一步揭示了具有由这种二氧化硅/橡胶混合物制成的胎面的轮胎。
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10.发明授权Process for preparing a silica/rubber blend which includes dispersing silica, asilica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from an organic solvent 失效制备二氧化硅/橡胶共混物的方法，其包括将二氧化硅，二氧化硅偶联剂和低分子量端基官能化二烯橡胶分散在常规橡胶状聚合物的水泥中，随后从有机溶剂中回收二氧化硅/橡胶共混物公开(公告)号：US07141622B2
公开(公告)日：2006-11-28
申请号：US10630022
申请日：2003-07-30
IPC分类号： C08K3/34
CPC分类号： C08J3/226 , B60C1/0016 , C08J2321/00 , C08J2409/00 , C08K3/013 , C08K5/548 , C08L19/006 , C08L21/00 , C08L2666/08
摘要： The subject invention reveals a process for preparing a silica/rubber blend which comprises dispersing silica, a silica coupling agent, and a low molecular weight end-group functionalized diene rubber throughout a cement of a conventional rubbery polymer, and subsequently recovering the silica/rubber blend from the organic solvent. It further reveals a tire having a tread that is made from such a silica/rubber blend.
摘要翻译： 本发明揭示了制备二氧化硅/橡胶共混物的方法，其包括将二氧化硅，二氧化硅偶联剂和低分子量端基官能化二烯橡胶分散在常规橡胶状聚合物的水泥中，随后回收二氧化硅/橡胶 从有机溶剂中混合。 它进一步揭示了具有由这种二氧化硅/橡胶混合物制成的胎面的轮胎。
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