Method for precisely preparing aliphatic polyester by utilizing betaine

An aliphatic polyester and betaine technology, applied in the field of polymer synthesis chemistry, can solve problems such as limited application, and achieve the effects of narrow molecular weight distribution, controllable reaction, and no metal residues
CN110396180AActive Publication Date: 2019-11-01NANJING ADVANCED BIOLOGICAL MATERIALS & PROCESS EQUIP INST CO LTD
11 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANJING ADVANCED BIOLOGICAL MATERIALS & PROCESS EQUIP INST CO LTD
Publication Date
2019-11-01

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method for precisely preparing aliphatic polyester from betaine, which comprises the following steps: with valerolactone or caprolactone as a monomer, betaine as a catalyst and ROH as an initiator, conducting reaction to obtain the aliphatic polyester. According to the preparation method for precisely preparing the aliphatic polyester from betaine, betaine is commerciallyavailable, thus preparation is simple, and when betaine is used as a catalyst, the preparation method has the advantages of controllable reaction, relatively mild reaction conditions, no metal residue, and narrow molecular weight distribution, controllable molecular weight and the like of the obtained polymer.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention belongs to the field of polymer synthetic chemistry, and provides a method for preparing aliphatic polyester catalyzed by commercially available betaine. Background technique

[0002] Aliphatic polyester is widely used in medical materials, microelectronics and textile materials due to its good biocompatibility, biodegradability and biosafety. See Adv BiochemEngBiotechnol 2006, 102-161; Macromolecules 2013 ,46,1283. The traditional method of synthesizing aliphatic polyester is the polycondensation reaction of diol and diacid. This synthesis method has the disadvantage of poor controllability. Because of its good controllability, the ring-opening polymerization of cyclic lactones has gradually developed into the main method of synthesizing aliphatic polyesters.

[0003] In the ring-opening polymerization of cyclic lactones, the choice of catalyst is the key. The catalysts used in ring-opening polymerization are metal catalysts, enzyme catalysts...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More