The invention provides a preparation method of a CF2O-contained monomer liquid crystal compound. The preparation method comprises the following steps of (1) with a compound with a structure as shown in the formula I as a raw material, reacting under the catalytic action of a zinc reagent and...
The invention provides a preparation method of a CF2O-contained monomer liquid crystal compound. The preparation method comprises the following steps of (1) with a compound with a structure as shown in the formula I as a raw material, reacting under the catalytic action of a zinc reagent and...
F2C=CF2 is a monomer of View Solution F2C=CF2 is a monomer of: View Solution Assertion : The central catbon atom in F2C=C=CF2 and both carbo atoms in F2B−C−=C−BF2 are sp-hybridized. Reasom molecules are planar. View Solution Statement-1 : F_(2)C=C=CF_(2) molecule...
loops that bind the cap and form a cap-binding groove and S-adenosylmethionine (SAM) cleft (2,3). NSP10 is a small 139 amino acid protein capable of forming independent dodecameric structures composed of four identical trimers where each monomer is capable of binding two zinc ions (4,5)...
摘要: Disclosed is a novel monomer composition and its preparation that is useful in the production of polyesters. This novel monomer composition is 1-acetoacetamido-2,3-propane diol and can be used in the preparation of polyesters in combination with a dicarboxylic acid....
is cleaved by a targeted protease, A2M undergoes a conformational change which blocks the protease’s active site and also promotes A2M clearance from the circulation (1). In contrast to the dimeric and tetrameric A2M, A2ML1 is secreted as a monomer (2, 3). A2ML1 is expressed in ...
HFC-1225zc is useful as a monomer for the preparation of fluoropolymers. Practice of the invention will become further apparent from the following non-limiting examples. EXAMPLE 1 PAC (CF3)2CHCO2H+H2O➝CF3CH2CF3+CF3CH CF2 A mixture of 25 mL water, 50 mL acetone and 15.1 g (77 mmo...
5. A composition of claim 3 wherein said third monomer is vinyl acetate. 6. A composition of claim 1 wherein said fluorine-containing perfluoro polyether carboxylic acid is an acid of the formula CF3—[CF(CF3)—CF2—O—]nCF2CO2H, where n is an integer from 12 to 26. 7. A ble...
Vinyltrimethoxysilane-co-2-vinylpyridine copolymer Synthesis and monomer reactivity ratios copolymer with vinyltrimethylsilane (VTMS) were performed but only hompolymerization 2VPy is observed due to the non-reactivity of VTMS under this conditions... N Gatica,L Gargallo,D Radi - 《Polymer Bulletin》...
A novel fluorinated diamine monomer, 4,4'[hyphen]bis(4[hyphen]amino[hyphen]2[hyphen]trifluoromethylphenoxy)[hyphe n]3,3',5,5'[hyphen]tetramethylbiphenyl, w... C Yang,S Hsiao,K Chen - 《Polymer》 被引量: 21发表: 2002年 Synthesis and study of thermal stability of 3-nitro-1,2,4-tri...