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An example describes the recovery of butylene glycol from a fermentation concentrate derived from sucrose employed in the form of molasses or cane syrup. Other carbohydrate materials mentioned are crude cane sugar, and grain or beet molasses, the carbohydrate mashes being inoculated with appropriate ...
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Chiroptical properties of cyclic esters and ketals derived from (S)-1,2-propylene glycol and (S,S)- and (R,R)-2,3-butylene glycol 喜欢 0 阅读量: 6 作者:Varda,Usieli,A.,Pilersdorf,Sharona,Shor,J.,Katzhendler,S.,Sarel DOI: 10.1021/jo00928a022 被引量: 11 ...
Synthesis and characterization of poly(butylene terephthalate)‐co‐poly(butylene succinate)‐block‐poly(ethylene glycol) segmented block copolymers The poly(butylene terephthalate)-co-poly(butylene succinate)-b-poly(ethylene glycol) segmented block copolymers (PBT-co-PBS/PEG) with PBS molar fraction (...
(Supplementary Fig.8). Notably, the ethylene glycol portion of the bound MHET was located outwards and away from the catalytic center, opposing the direction of those in other MHET complexes (see below). Nevertheless, the hydroxyl group of S170 is estimated at 2.9 Å from the carbonyl ...
Two series of aliphatic-aromatic copolyesters derived from succinic and 2,5-furandicarboxylic acids, and di-O-2-(hydroxyethyl) resorcinol as diol substituent of either 1,4-butanediol or ethylene glycol, respectively, were obtained by ring opening polymerization(ROP) performed in bulk and catalyzed ...
PBS IONOMER The synthesis of copolyester based on ionomer In a previous paper, two types of PBS ionomer (PBSi and POBSi) were polymerized in the presence of dimethyl 5-sulfoisophthalateso- dium salt and sodium sulfonate polyethylene glycol (SPEG) via conventional two-step polycondensation.17,22 ...
Disclosed is a process for producing copolyesters having repeat units from a dicarboxylic acid component comprising at least 90 mol % terephthalic acid and a glycol component comprising about 10-95 mol % 1,4-cyclohexanedimethanol and fro... YAU CHEUK CHUNG,CHERRY CLINTON - US 被引量: 128发表:...
Suitable alcoholic modifying agents are in particular aliphatic and cycloaliphatic glycols of from 2 to 10 carbon atoms, such as ethylene glycol, propylene glycol, hexamethylene glycol, neopentyl glycol, diethylene glycol and 1,4-bis-hydroxy-methylcyclohexane and also bisphenol A. The properties of ...