| 摘要 |
Mixture of succinic acid alkyl esters comprises at least two compounds having ester compounds (I), (II), and (III). Mixture of succinic acid alkyl esters comprises at least two compounds having ester compound of formulae (R1-OC(=O)-CH 2-CH 2-C(=O)O-R1) (I), (R1-OC(=O)-CH 2-CH 2-C(=O)O-R2) (II), and (R2-OC(=O)-CH 2-CH 2-C(=O)O-R2) (III). R1, R2 : linear or branched 1-12C-alkyl with the proviso that R1 is not equal to R2. Independent claims are included for: (1) preparing the ester mixture, comprising converting two different monofunctional alcohols of the formulae (R1-OH) (IV) and (R2-OH) (V) at a temperature of 50-250[deg] C and optionally under a pressure of 2 mbar and 4 bar and optionally in the presence of a catalyst with succinic acid, and removing the formed reaction water from the mixture by distillation; (2) a softener composition comprising the ester mixture or the succinic acid alkyl ester; (3) producing a plasticized plastic, comprising mixing PVC at 10-50[deg] C with the softener composition and optionally other auxiliaries and additives, where the softener composition comprises 10-200 pts. wt. of plastic, and placing the produced plastisol and then processing at a temperature of 140-200[deg] C to the end-product; and (4) the plastisol comprising at least one plastic material and the softener composition. |
