4,5,6-Trimethoxy-1,2,3-trimethyl-benzol | 91764-98-6

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 4,5,6-Trimethoxy-1,2,3-trimethyl-benzol
• 英文别名: 1,2,3-Trimethoxy-4,5,6-trimethylbenzene
• CAS: 91764-98-6
• 化学式: C₁₂H₁₈O₃
• 分子量: 210.273
• InChiKey: YWUIRUKCFDTEOV-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  15
• 可旋转键数：
  3
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  27.7
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  3,4,5-三甲氧基苯甲酸甲酯 在 lithium aluminium tetrahydride 、 氯化亚砜 作用下， 以 四氢呋喃 、 乙醚 、 苯 为溶剂， 生成 4,5,6-Trimethoxy-1,2,3-trimethyl-benzol
  参考文献：
  名称：

  Musso,H. et al., Chemische Berichte, 1962, vol. 95, p. 2837 - 2843

  摘要：

  DOI：

文献信息

• Modifier for lithium catalysts
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0258167A2

  公开（公告）日：1988-03-02

  It has been determined that 1,2,3-trialkoxybenzenes and 1,2,4-trialkoxybenzenes can be utilized in order to increase the vinyl content of polydienes which are prepared utilizing lithium catalyst systems. For instance, it has been determined that 1,2,3-trimethoxybenzene and 1,2,4-trimethoxybenzene are very strong modifiers for utilization in such polymerizations. The utilization of the trialkoxybenzene modifiers of the present invention is highly advantageous because they promote fast polymerization rates and can be used to produce polymers having high vinyl contents.

  已确定 1,2,3-三烷氧基苯和 1,2,4-三烷氧基苯可用于增加利用锂催化剂体系制备的聚二 烯中的乙烯基含量。例如，已确定 1,2,3-三甲氧基苯和 1,2,4-三甲氧基苯是用于此类聚合反应的强改性剂。使用本发明的三烷氧基苯改性剂非常有利，因为它们能促进快速聚合，并可用于生产乙烯基含量高的聚合物。
• Segmented elastomer
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0438967A1

  公开（公告）日：1991-07-31

  It is important for tire treads to exhibit good wet skid resistance, low rolling resistance, good wear characteristics and good abrasion resistance. This is often accomplished by utilizing a blend of various rubbers in making tire tread compositions. However, some of the desirable characteristics of the individual rubbers in the blend are frequently lost on mixing. The segmented elastomers of this invention offer a unique combination of desirable characteristics for utilization in making tire tread compositions. This invention more specifically discloses a rubber polymer which has an excellent combination of properties for use in making tire treads which is comprised of: (a) a first segment which is comprised of repeat units which are derived from isoprene having a microstructure wherein there are from about 75% to about 98% 1,4-linkages and from about 2% to about 25% 3,4-linkages and wherein the first segment has a number average molecular weight which is within the range of about 25,000 to about 350,000; and (b) a second segment which is comprised of repeat units which are derived from 30 to 95 weight percent 1,3-butadiene and from 5 to 70 weight percent styrene, wherein the sum of (1) the product of 1.7 and the weight percent of styrene in the second segment and (2) the percentage of 1,2-butadiene linkages in the second segment is within the range of about 50% to about 92%, and wherein the second segment has a number average molecular weight which is within the range of about 50,000 to about 350,000.

  轮胎胎面必须具有良好的防滑性、低滚动阻力、良好的磨损特性和耐磨性。这通常是通过在轮胎胎面成分中使用各种橡胶的混合物来实现的。然而，混合橡胶中的单个橡胶的一些理想特性往往会在混合时丧失。本发明的分段弹性体提供了独特的理想特性组合，可用于制造轮胎胎面组合物。本发明更具体地公开了一种橡胶聚合物，它具有用于制造轮胎胎面的优异组合特性，由以下部分组成：(a) 第一段，由异戊二烯衍生的重复单元组成，其微观结构中 1,4-联结占约 75% 至约 98%，3,4-联结占约 2% 至约 25%，第一段的平均分子量在约 25,000 至约 350,000 之间；(b) 第二段由 30%至 95%的 1,3-丁二烯和 5%至 70%的苯乙烯的重复单元组成， 其中(1)1,3-丁二烯的重量百分比与苯乙烯的重量百分比的乘积之和为 1.7 的乘积和第二段中苯乙烯的重量百分比，以及(2) 第二段中 1，2-丁二烯链节的百分比之和在约 50% 至约 92% 的范围内，其中第二段的数均分子量在约 50,000 至约 350,000 的范围内。
• Isoprene-butadiene diblock rubber
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0761703A1

  公开（公告）日：1997-03-12

  The subject invention discloses an isoprene-butadiene diblock rubber which is particularly valuable for use in making treads for tires which have improved wear characteristics without compromising traction characteristics or rolling resistance. Said isoprene-butadiene diblock rubber is comprised of (1) a first block which is comprised of repeat units which are derived from 1,3-butadiene and (2) a second block which is comprised of repeat units which are derived from both 1,3-butadiene and isoprene, wherein the repeat units derived from isoprene and 1,3-butadiene in the second block are in an essentially random order, wherein the diblock rubber has a glass transition temperature which is within the range of about -100°C to about -70°C, and wherein the diblock rubber has a Mooney viscosity which is within the range of about 50 to about 140. In cases where the isoprene-butadiene diblock rubber of this invention is employed in automobile tires it will preferably have a second glass transition temperature which is within the range of about -50°C to about 0°C. The Mooney viscosity will preferably be within the range of about 80 to about 135 and in the case of oil extended polymers will more preferably be within the range of about 100 to about 130 before oil extension.

  本发明公开了一种异戊二烯-丁二烯二嵌体橡胶，这种橡胶特别适用于制造轮胎胎面，在不影响牵引特性或滚动阻力的情况下，改善轮胎的磨损特性。所述异戊二烯-丁二烯二嵌体橡胶由以下两部分组成：(1) 第一嵌段，该嵌段由源自 1,3-丁二烯的重复单元组成；(2) 第二嵌段，该嵌段由源自 1,3-丁二烯和异戊二烯的重复单元组成、其中二嵌段橡胶的玻璃化温度在约 -100°C 至约 -70°C 的范围内，二嵌段橡胶的门尼粘度在约 50 至约 140 的范围内。在汽车轮胎中使用本发明的异戊二烯-丁二烯二嵌橡胶时，其第二玻璃化转变温度最好在约 -50°C 至约 0°C 的范围内。门尼粘度最好在约 80 至约 135 的范围内，如果是油延伸聚合物，在油延伸之前，门尼粘度最好在约 100 至约 130 的范围内。
• Tire tread compound
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0796898A1

  公开（公告）日：1997-09-24

  The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene block, wherein said butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene block has a number average molecular weight which is within the range of about 25,000 to about 350,000, wherein said isoprene-butadiene diblock rubber has essentially one glass transition temperature which is within the range of about -100°C to about -70°C, wherein said isoprene-butadiene diblock polymer has a Mooney ML-4 viscosity at 100°C which is within the range of about 50 to about 140, and wherein the repeat units derived from isoprene and 1,3-butadiene in the isoprene-butadiene block are in essentially random order; and (b) a second rubber selected from the group consisting of high vinyl polybutadiene rubber, styrene-isoprene-butadiene rubber, solution styrene-butadiene rubber and emulsion styrene-butadiene rubber.

  本发明公开了一种具有外圆周胎面的充气轮胎，其中所述胎面为硫硫化橡胶组合物，该组合物由 (a) 异戊二烯-丁二烯二嵌段橡胶组成，所述异戊二烯-丁二烯二嵌段橡胶由丁二烯嵌段和异戊二烯-丁二烯嵌段组成、其中所述丁二烯嵌段的平均分子量在约 25,000 至约 350,000 的范围内，其中所述异戊二烯-丁二烯嵌段的平均分子量在约 25、其中所述异戊二烯-丁二烯二嵌段聚合物在 100℃时的门尼 ML-4 粘度在约 50 至约 140 的范围内，且异戊二烯-丁二烯嵌段中由异戊二烯和 1,3-丁二烯衍生的重复单元基本上是无序的；(b) 第二种橡胶，选自高乙烯基聚丁二烯橡胶、苯乙烯-异戊二烯-丁二烯橡胶、溶液苯乙烯-丁二烯橡胶和乳液苯乙烯-丁二烯橡胶组成的组。
• Technique for reducing the cold flow of rubbers
  申请人：THE GOODYEAR TIRE & RUBBER COMPANY

  公开号：EP0884360A1

  公开（公告）日：1998-12-16

  Cold flow is a problem that is commonly encountered in the handling and storage of low molecular weight linear rubbers, such as low vinyl polybutadiene rubber and isoprene-butadiene rubber. This invention is based upon the unexpected discovery that the cold flow of such rubbery polymers can be greatly reduced by incorporating a small block of polystyrene therein. The rubbery polymers of this invention which exhibit a low level of cold flow can be synthesized by simply terpolymerizing 1,3-butadiene, isoprene and from about 0.5 phm to about 3 phm of styrene under anionic polymerization conditions in the absence of a polar modifier. It is preferred to utilize batch polymerization techniques. However, continuous polymerization techniques can also be utilized. This invention more specifically disclosed a rubbery polymer which is comprised of polymer chains containing repeat units which are derived from 1,3-butadiene, isoprene and from about 0.5 weight percent to about 3 weight percent styrene, wherein the repeat units which are derived from styrene are in blocks at the ends of the polymer chains, wherein the rubbery polymer has a glass transition temperature which is within the range of about -105°C to about -65°C and wherein the rubbery polymer has a number average molecular weight which is within the range of about 50,000 to about 600,000.

  冷流是处理和储存低分子量线性橡胶（如低乙烯基聚丁二烯橡胶和异戊二烯-丁二烯橡胶）时经常遇到的问题。本发明基于一个意外的发现，即通过在此类橡胶聚合物中加入一小块聚苯乙烯，可以大大降低其冷流动性。在阴离子聚合条件下，在没有极性改性剂的情况下，将 1,3-丁二烯、异戊二烯和约 0.5 phm 至约 3 phm 的苯乙烯进行简单的三元共聚，即可合成冷流性较低的本发明橡胶聚合物。最好采用间歇聚合技术。不过，也可以采用连续聚合技术。本发明更具体地公开了一种橡胶聚合物，它由含有重复单元的聚合物链组成，这些重复单元来源于1,3-丁二烯、异戊二烯和约0.5重量％至约3重量％的苯乙烯，其中来源于苯乙烯的重复单元在聚合物链的末端呈块状，橡胶聚合物的玻璃化温度在约-105℃至约-65℃的范围内，橡胶聚合物的平均分子量在约50,000至约600,000的范围内。