摘要:
The present invention discloses a cellulose based optical film material with the following structure: wherein R1 is —H or —C(O)R4, R4 is alkyl or aryl; R2 is —C(O)R5, R5 is alkyl or aryl; R3 comprises one of the group consisting of: phosphinate based group, phosphonate based group, phosphonamide based group, phosphate based group, phosphoramide based group, carbamate based group, carbonate based group, and ester based group. Further, this invention also discloses a method for forming the cellulose based optical film material.
摘要:
The present invention discloses a nucleophilic acyl substitution-based polymerization catalyzed by mononuclear oxometallic complexes. In the first place, the first monomers with a plurality of carboxyl groups, and the second monomers with a plurality of protic nucleophilic groups are provided, wherein the protic nucleophilic groups comprise hydroxyl, amine, or thiol group. Next, catalyzed by the mentioned mononuclear oxometallic complex, the first monomers and the second monomers are polymerized into the designed polymer. On the other hand, this invention discloses another nucleophilic acyl substitution-based polymerization catalyzed by mononuclear oxometallic complexes. In the first place, monomers with at least one carboxyl (phosphonyl) group and at least one masked protic nucleophilic group are provided. Then, monomers are polymerized into the designed polymer, catalyzed by the mentioned mononuclear oxometallic complexes.
摘要:
The present invention discloses a nucleophilic acyl substitution-based polymerization catalyzed by oxometalic complexes. In the first place, the first monomers with a plurality of carboxyl groups, and the second monomers with a plurality of protic nucleophilic groups are provided, wherein the protic nucleophilic groups comprise hydroxyl, amine, or thiol group. Next, catalyzed by the mentioned oxometallic complex, the first monomers and the second monomers are polymerized into the designed polymer. On the other hand, this invention discloses another nucleophilic acyl substitution-based polymerization catalyzed by oxometallic complexes. In the first place, monomers with at least one carboxyl (phosphonyl) group and at least one masked protic nucleophilic group are provided. Then, monomers are polymerized into the designed polymer, catalyzed by the mentioned oxometallic complexes.
摘要:
The present invention discloses a method of nucleophilic acyl substitution (NAS) of carboxylic acids or esters (hereinafter acids/esters) catalyzed by oxometallic complexes. According to the mentioned method, NAS reactions between acids/esters (R1COOH/R1—COO—R2) and protic nucleophile (R3-AH) can be catalyzed by oxxmetallic complexes, wherein A stands for O, S, or NH. The general formula of the mentioned oxometallic complexes is MOmL1yL2z, wherein M is selected from IVB, VB, VIB or actinide groups, m, y, z are integers, and m, y≧1, z≧0. A general catalytic equation is shown as follows:
摘要翻译:本发明公开了由氧化金属络合物催化的羧酸或酯(以下称为酸/酯)的亲核酰基取代(NAS)的方法。 根据上述方法,在酸/酯(R 1 COOH / R 1 -COO-R 2)之间的NAS反应和质子亲核试剂( R 3 -AH)可以被氧化金属络合物催化,其中A代表O,S或NH。 所述氧化金属络合物的通式为M 1 L 1,L 2,L 2,Z 2, 其中M选自IVB,VB,VIB或锕系元素基团,m,y,z是整数,m,y> = 1,z> = 0。 一般催化方程如下:
摘要:
The present invention discloses a method of nucleophilic acyl substitution (NAS) of anhydrides catalyzed by oxometalic complex. According to the mentioned method, NAS reaction between anhydride(s) and highly functionalized protic nucleophile can be catalyzed by oxometallic complexes, wherein the oxometallic complexes compris the metals selected from IVB, VB, and VIB groups.
摘要:
A pyridine-free esterification reagent for anhydride method to determine the hydroxyl number of polyols is provided. The reagent includes an anhydride, an oxometallic complex having a formula of MOmLn, and a neutral or slightly acidic solvent, wherein M includes transition metals of IVB, VB, or VIB group, L includes (OTf), X, and m and n are an integer greater than or equal to 1, wherein X is halogen, and R, R′, R″, and R′″, independently, are alkyl, aryl, or heterocyclic groups containing nitrogen, oxygen, phosphorus, or sulfur heteroatoms. The invention also provides a method to determine the hydroxyl number of polyols.
摘要:
A pyridine-free esterification reagent for anhydride method to determine the hydroxyl number of polyols is provided. The reagent includes an anhydride, an oxometallic complex having a formula of MOmLn, and a neutral or slightly acidic solvent, wherein M includes transition metals of IVB, VB, or VIB group, L includes (OTf), X, and m and n are an integer greater than or equal to 1, wherein X is halogen, and R, R′, R″, and R′″, independently, are alkyl, aryl, or heterocyclic groups containing nitrogen, oxygen, phosphorus, or sulfur heteroatoms. The invention also provides a method to determine the hydroxyl number of polyols.
摘要:
The present invention discloses a cellulose based optical film material with the following structure: wherein R1 is —H or —C(O)R4, R4 is alkyl or aryl; R2 is —C(O)R5, R5 is alkyl or aryl; R3 comprises one of the group consisting of: phosphinate based group, phosphonate based group, phosphonamide based group, phosphate based group, phosphoramide based group, carbamate based group, carbonate based group, and ester based group. Further, this invention also discloses a method for forming the cellulose based optical film material.
摘要翻译:本发明公开了一种具有以下结构的纤维素基光学薄膜材料:其中R 1是-H或-C(O)R 4,R 4, 烷基或芳基; R 2是-C(O)R 5,R 5是烷基或芳基; R 3包括由次膦酸酯基,膦酸酯基,膦酰胺基,磷酸酯基,磷酰胺基,氨基甲酸酯基,碳酸酯基和酯基组成的组中的一种。 此外,本发明还公开了一种形成基于纤维素的光学薄膜材料的方法。
摘要:
A process for acyl substitution of an anhydride with an active-hydrogen-containing compound includes reacting the anhydride with the active-hydrogen-containing compound in the presence of a vanadyl salt catalyst to obtain a high yield of acyl substitution reaction product with high chemoselectivity.