CAS: 2089-87-4; Naphthalene-1,6-Dicarboxylic Acid

相似化合物

7315-96-0 605-70-9 2862097-61-6

上下游产品

1,6-dimethylnaphthalene nitric acid 1,6-diisopropylnaphthalene 4,7-dimethyl-naphthalene-1-sulfonic acidNaphthalin-1,6-dicarbonsaeure-dimethylester

📜1,6-二甲基萘置于sodium Dichromate体系中,用 水 用作溶剂,化学反应生成萘-1,6-二甲酸
参考文献:环糊精对萘二甲酸区域异构体的分子识别
标题:环糊精对萘二甲酸区域异构体的分子识别
摘要:环糊精 (Cd) 与萘二甲酸 (Ndc) 的一些区域异构体的络合在 0.1 Mol Dm-3 Nahco3 中通过 1H NMR 光谱法在 25 oc 中进行了检查,同时测量了 Ndc 的诱导圆二色光谱,并添加了cd的.2,6-和2,7-Ndc 的 1H NMR 谱显示出特征性的 Ab 型模式,根据 Pople 理论,该模式随着 Cd 浓度的增加而连续变化.β-Cd 与 Ndc 复合物的结合常数 (Ka) 按以下顺序增加: 1,4-Ndc ~ 1,5-Ndc < 1,3-Ndc < 1,6-Ndc < 2,3-Ndc < 2,7-Ndc <= 2,6-Ndc,表明 β-Cd 能够识别 Ndc 的分子结构.另一方面,α-和γ-Cd'S 与ndc'S 的相互作用非常弱并且对ndc'S 是非特异性的.基于系统的 Roesy 光谱估计了 β-Cd 与一些 Ndc 复合物的分子结构.使用 β-Cd-(2-氯甲基环氧乙烷)
Doi:10.1246/bcsj.71.1285

专利信息

专利号:US-4835247-A
优先权日:1988-08-08
标 题:Process for the synthesis of a copolyester adhesive resin
发明人：WILSON JOHN R; ROUSEK MARIAN M; MASSEY FRED L
权利人:GOODYEAR TIRE & RUBBER
摘要:Isophthalic acid is commonly utilized as a comonomer in the preparation of copolyester resins which are utilized as solution adhesives. Unfortunately, solutions of such resins frequently become hazy due to the presence of cyclic oligomers. This invention is based upon the unexpected discovery that the presence of protonic acids during the synthesis of the copolyester resins containing isophthalic acid utilizing conventional metallic catalysts results in solutions of the resins in organic solvents being virtually haze free. The subject invention more specifically reveals a process for synthesizing a polyethylene terephthalate/isophthalate/azelate copolyester resin which is particularly useful as a solution adhesive resin, comprising reacting ethylene glycol with a diacid component which is comprised of (a) from about 25 to about 45 mole percent terephthalic acid, (b) from about 10 to about 30 to about 55 mole percent azelaic acid based upon the diacid component; in the presence of at least one metallic catalyst selected from the group consisting of antimony compounds, titanium compounds; manganese compounds, and germanium compounds and in the presence of at least one protonic acid having a pKa of less than about 2.5; wherein the amount of metallic catalyst present is within the rang eof about 130 ppm to about 1500 ppm and wherein the amount of protonic acid present is within the range of about 50 ppm to about 500 ppm, with said amounts being based upon the weight of the copolyester resin produced.

专利号:US-4921929-A
优先权日:1988-08-08
标 题:Process for the synthesis of a copolyester adhesive resin
发明人：WILSON JOHN R; ROUSEK MARIAN M; MASSEY FRED L
权利人:GOODYEAR TIRE & RUBBER
摘要:Isophthalic acid is commonly utilized as a comonomer in the preparation of copolyester resins which are utilized as solution adhesives. Unfortunately, solutions of such resins frequently become hazy due to the presence of cyclic oligomers. This invention is based upon the unexpected discovery that the presence of protonic acids during the synthesis of the copolyester resins containing isophthalic acid utilizing conventional metallic catalysts results in solutions of the resins in organic solvents being virtually haze free. The subject invention more specifically reveals a process for synthesizing a polyethylene terephthalate/isophthalate/azelate copolyester resin which is particularly useful as a solution adhesive resin, comprising reacting ethylene glycol with a diacid component which is comprised of (a) from about 25 to about 45 mole percent terephthalic acid, (b) from about 10 to about 30 mole percent isophthalic acid, and (c) from about 30 to about 55 mole percent azelaic acid based upon the diacid component; in the presence of at least one metallic catalyst selected from the group consisting of antimony compounds, titanium compounds; manganese compounds, and germanium compounds and in the presence of at least one protonic acid having a pKa of less than about 2.5; wherein the amount of metallic catalyst present is within the range of about 130 ppm to about 1500 ppm and wherein the amount of protonic acid present is within the range of about 50 ppm to about 500 ppm, with said amounts being based upon the weight of the copolyester resin produced.

专利号:US-4535144-A
优先权日:1983-01-28
标 题:Synthesis of high molecular weight polybenzimidazole with arylhalo phosphorus compound catalyst
发明人：CHOE EUI W; CONCIATORI ANTHONY B
权利人:CELANESE CORP
摘要:This invention provides a two stage melt polymerization process for the production of an improved type of high molecular weight polybenzimidazole, which involves the use of an arylhalophosphine or arylhalophosphite polymerization catalyst. The process provides poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole of improved color and Plugging Value, and is further characterized by an inherent viscosity of at least about 1.0 dl/g, and a weight average molecular weight of at least about 100,000.

专利号:US-4533725-A
优先权日:1983-01-28
标题:Synthesis of high molecular weight polybenzimidazole with arylhalo phosphorus compound catalyst
发明人：CHOE EUI W; CONCIATORI ANTHONY B
权利人:DELANESE CORP
摘要:This invention provides a two stage melt polymerization process for the production of an improved type of high molecular weight polybenzimidazole, which involves the use of an arylhalophosphine or arylhalophosphite polymerization catalyst. The process provides poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole of improved color and Plugging Value, and is further characterized by an inherent viscosity of at least about 1.0 dl/g, and weight average molecular weight of at least about 100,000.

专利号:US-6166165-A
优先权日:1996-12-18
标题:Polyurethane synthesis from functional group terminated polymers containing sulfonate groups
发明人：CHANG WALLY L
权利人:WITCO CORP
摘要:Disclosed is a process for producing water-dispersible polyurethanes by forming an isocyanate-di-substituted prepolymer and reacting it with a chain extender. The prepolymer can be formed by reacting a diisocyanate with an ethylenically unsaturated precursor which is preferably formed by condensation polymerization of reactants including ethylenically unsaturated reactants and then sulfonating the ethylenic unsaturation of said polymeric precursor by reacting it with a sulfonating agent such as bisulfite, metabisulfite, or a mixture thereof.

专利号:WO-2011028852-A2
优先权日:2009-09-02
标题:Process for the synthesis of fluorinated ethers of aromatic acids