US 10,308,764 B2 · Method for preparing biobased nylon: polylactam

Abstract

The invention relates to a preparation method of green nylon poly butyrolactams, the biological materials of GABA in vacuum under the condition of high temperature melt decomposition and purified butyrolactams, then by vacuum polymerization of green nylon poly butyrolactams. Compared with the prior art, the invention is prepared by biological method for the synthesis of a wide range of sources, to solve the problem of raw material supply PA4 for mass production, reduce the cost of reaction, and the reaction condition is simple, easy to implement simplified synthesis steps, from the laboratory to the transformation of industrial production.

Claims10

Dependent claims

A method for preparing a green nylon polybutyrolactam, comprising:

obtaining a purified butyrolactam from processes including melting γ-aminobutyric acid and vacuum purification of butyrolactam;
and
obtaining a green nylon polybutyrolactam from a process including vacuum polymerization of the purified butyrolactam.

Dependencies are inferred from the claim text.

Facts

Application

15/542,602Filed 13 Jul 2015

Priority

CN 2015 1 00101698 Jan 2015

Published

US 2018/0223043 A19 Aug 2018

Granted

4 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C08G 69/16
Lactams: preparatory processes
C08G 69/24
Lactams: pyrrolidones or piperidones
C12P 13/005
Preparation of nitrogen-containing organic compounds: amino acids other than alpha- or beta amino acids, e.g. gamma amino acids
C12Y 401/01015
Carboxy-lyases: glutamate decarboxylase

Method for preparing biobased nylon: polylactam

Life of this patent

Method for preparing biobased nylon: polylactam

Life of this patent

Abstract

Claims10