3-Methyl-4-penten-1,2-diol | 79246-53-0

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 3-Methyl-4-penten-1,2-diol
• 英文别名: 3-Methylpent-4-ene-1,2-diol；3-methylpent-4-ene-1,2-diol
• CAS: 79246-53-0
• 化学式: C₆H₁₂O₂
• 分子量: 116.16
• InChiKey: KMPBSNWACXDMII-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.4
• 重原子数：
  8
• 可旋转键数：
  3
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.67
• 拓扑面积：
  40.5
• 氢给体数：
  2
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  3-Methyl-4-penten-1,2-diol 、 丙酮 在 对甲苯磺酸 作用下， 反应 18.0h， 以85%的产率得到2,2-Dimethyl-4-(1-methyl-2-propenyl)-1,3-dioxolan
  参考文献：
  名称：

  立体定向合成von Alkoholen，X.非对映异构合成von（–）-δ-多条纹

  摘要：

  AUS Benzyloxyacetaldehyd（3）UND DEM chirlalenBoronsäureester 4 erhielt人第三人以diastereoselektive CC-Verknüpfung巢穴Homoallylalkohol 5。Daraus wurden durch酒精标准操作8和Weiter（–）-δ-Multistriatin（1），含97％异戊二烯。

  DOI：

  10.1002/cber.19811140812
• 作为产物：
  描述：

  1-Benzyloxy-3-methyl-4-penten-2-ol 在 氨 、 sodium 作用下， 以 乙醚 为溶剂， 反应 1.0h， 以55%的产率得到3-Methyl-4-penten-1,2-diol
  参考文献：
  名称：

  立体定向合成von Alkoholen，X.非对映异构合成von（–）-δ-多条纹

  摘要：

  AUS Benzyloxyacetaldehyd（3）UND DEM chirlalenBoronsäureester 4 erhielt人第三人以diastereoselektive CC-Verknüpfung巢穴Homoallylalkohol 5。Daraus wurden durch酒精标准操作8和Weiter（–）-δ-Multistriatin（1），含97％异戊二烯。

  DOI：

  10.1002/cber.19811140812

文献信息

• POLYVINYL ALCOHOL HAVING 1,2-GLYCOL BOND IN SIDE CHAIN AND PROCESS FOR PRODUCING THE SAME
  申请人：The Nippon Synthetic Chemical Industry Co., Ltd.

  公开号：EP1780227A1

  公开（公告）日：2007-05-02

  The present invention provides a polyvinyl alcohol having a 1,2-glycol bond in a side chain, which has the features that there is no generation of dimethyl carbonate in the preparation thereof, no need of an eliminating process of dimethyl carbonate in the recovering process of waste liquid after hydrolysis. Also, even an introduction amount of 1,2-glycol bonds is increased, there is no deterioration of solubility in a hydrolyzing solution (methanol) of a copolymer (paste) before hydrolysis, further, water-insoluble is not lowered even in experiencing thermal history. Specifically, the present invention provides a polyvinyl alcohol having a 1,2-glycol bond in a side chain obtained by hydrolyzing a copolymer of a vinyl ester monomer and a compound shown in the formula (1).

  本发明提供了一种侧链中含有 1，2-乙二醇键的聚乙烯醇，其特点是在制备过程中不产生碳酸二甲酯，在水解后废液的回收过程中无需消除碳酸二甲酯。此外，即使增加 1，2-乙二醇键的引入量，水解前共聚物（糊状物）在水解液（甲醇）中的溶解度也不会变差，而且即使经历热历程，水溶性也不会降低。具体地说，本发明提供了一种聚乙烯醇，其侧链中具有 1,2-乙二醇键，该聚乙烯醇是通过水解乙烯基酯单体和式 (1) 所示化合物的共聚物而获得的。
• POLYVINYL ACETAL RESIN
  申请人：The Nippon Synthetic Chemical Industry Co., Ltd.

  公开号：EP2006308A1

  公开（公告）日：2008-12-24

  Disclosed is a polyvinyl acetal resin having high elastic modulus and excellent solubility in alcohol solvents, which forms an alcohol solution having high transparency. The polyvinyl acetal resin is obtained by acetalizing a polyvinyl alcohol resin (A) which has 0.1-1.5 mol% of a 1,2-diol structure unit represented by the general formula (1) below and a saponification degree of not less than 95 mol%. (1) [In the formula, R1, R2 and R3 independently represent a hydrogen atom or an organic group; X represents a single bond or a bonded chain; and R4, R5 and R6 independently represent a hydrogen atom or an organic group.]

  本发明公开了一种聚乙烯醇缩醛树脂，它具有较高的弹性模量，在醇类溶剂中的溶解性极佳，可形成具有较高透明度的醇溶液。这种聚乙烯醇缩醛树脂是通过将聚乙烯醇树脂（A）缩醛而得到的，聚乙烯醇树脂（A）中有 0.1-1.5 摩尔%的 1,2-二醇结构单元，如下文通式(1)所示，皂化度不低于 95 摩尔%。 (1) [式中，R1、R2 和 R3 分别代表氢原子或有机基团；X 代表单键或键链；R4、R5 和 R6 分别代表氢原子或有机基团。］
• DISPERSION STABILIZER FOR VINYL COMPOUND SUSPENSION POLYMERIZATION
  申请人：The Nippon Synthetic Chemical Industry Co., Ltd.

  公开号：EP2058342A1

  公开（公告）日：2009-05-13

  A dispersion stabilizer for vinyl compound suspension polymerization with which due to excellence in dispersion stability at polymerization, there can be obtained vinyl chloride polymer particles with sharp particle size distribution and high bulk density, and with which there can be produced vinyl chloride polymer particles being less in wet foam ratio, being resistant to formation of foamy polymer or polymer scale attributed to dry foam, further being less in staining and excelling in heat resistance. There is provided a dispersion stabilizer comprised of a PVA resin of 65 to 87 mol% saponification degree having a 1,2-diol component in its side chain.

  一种用于乙烯基化合物悬浮聚合的分散稳定剂，由于在聚合时具有优异的分散稳定性，因此可以获得粒度分布均匀、堆积密度高的氯乙烯聚合物颗粒，并且可以生产出湿泡沫率较低、不易形成泡沫状聚合物或干泡沫引起的聚合物垢的氯乙烯聚合物颗粒，此外，还具有较低的染色性和优异的耐热性。本发明提供了一种分散稳定剂，它由皂化度为 65 至 87 摩尔的 PVA 树脂组成，其侧链中含有 1,2-二醇成分。
• WATER-SOLUBLE POLYVINYL ALCOHOL RESIN FIBER AND NONWOVEN FABRICS MADE BY USING THE SAME
  申请人：The Nippon Synthetic Chemical Industry Co., Ltd.

  公开号：EP2112257A1

  公开（公告）日：2009-10-28

  A water-soluble polyvinyl alcohol resin filament is provided, which is formed by melt-spinning a material consisting essentially of a water-soluble polyvinyl alcohol resin having a 1,2-diol structural unit represented by the following general formula (1). A nonwoven fabric is also provided, which is produced by using the water-soluble polyvinyl alcohol resin filament. Therefore, the nonwoven fabric is excellent in water solubility at a lower temperature, and substantially free from bubbling during dissolution thereof in water. In addition, a fully saponified PVA can be used for melt-forming. This suppresses emanation of acetic acid odor, thereby improving the working environment. wherein R1, R2, R3, R4, R5 and R6, which may be the same or different, are each a hydrogen atom or a monovalent organic group, and X is a single bond or a connecting chain.

  本发明提供了一种水溶性聚乙烯醇树脂长丝，它是通过熔融纺丝形成的，这种材料主要由水溶性聚乙烯醇树脂组成，该聚乙烯醇树脂具有由以下通式（1）表示的 1，2-二醇结构单元。此外，还提供了一种无纺布，该无纺布是通过使用水溶性聚乙烯醇树脂长丝生产的。因此，这种无纺布在较低温度下的水溶性极佳，而且在水中溶解时基本上不会产生气泡。此外，完全皂化的 PVA 可用于熔体成型。这可以抑制醋酸气味的散发，从而改善工作环境。 其中 R1、R2、R3、R4、R5 和 R6（可以相同或不同）各自为氢原子或单价有机基团，X 为单键或连接链。
• POLYVINYL ALCOHOL RESIN COMPOSITION
  申请人：The Nippon Synthetic Chemical Industry Co., Ltd.

  公开号：EP2426172A1

  公开（公告）日：2012-03-07

  The present invention provides a polyvinyl alcohol-based resin (PVOH-based resin) composition having less coloration from melt processing and having high aging stability of the melt viscosity. The present invention relates to a polyvinyl alcohol-based resin composition comprising a polyvinyl alcohol-based rein having a structural unit represented by the following formula (1) and having an absorbance of 0.1 to 0.3 of 280 nm in an ultraviolet absorbance spectrum as a 4 mass% aqueous solution, a carboxylic acid and an alkaline (earth) metal salt, wherein when an aqueous solution of the polyvinyl alcohol-based resin composition is prepared so as to have a content of the polyvinyl alcohol-based resin of 4 mass%, the pH of the aqueous solution at 20°C is from 5.5 to 7: [wherein R1, R2 and R3 independently represent a hydrogen atom or an organic group, X represents a single bond or a bonding chain, and R4, R5 and R6 independently represent a hydrogen atom or an organic group].

  本发明提供了一种聚乙烯醇基树脂（PVOH 基树脂）组合物，该组合物在熔融加工中着色较少，且熔融粘度的老化稳定性高。本发明涉及一种聚乙烯醇基树脂组合物，该组合物包含一种聚乙烯醇基 rein，其结构单元由下式（1）表示，在紫外线吸光度为 0.1 至 0.3 of 280 nm 的紫外吸收光谱的 4 质量％的水溶液、一种羧酸和一种碱（土）金属盐，其中，当制备聚乙烯醇基树脂组合物的水溶液以使聚乙烯醇基树脂的含量为 4 质量％时，该水溶液在 20°C 时的 pH 值为 5.5 至 7： [其中 R1、R2 和 R3 分别代表氢原子或有机基团，X 代表单键或键链，R4、R5 和 R6 分别代表氢原子或有机基团]。