Unlock instant, AI-driven research and patent intelligence for your innovation.

Prepn of guanidyl thiocyanate

A technology of guanidine thiocyanate and ammonium thiocyanate, which is applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problem that the product purity is not very high, and achieve good quality, high purity, simple and practical process Effect

Inactive Publication Date: 2006-01-11
方建文
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the current production process, the purity of the product obtained is not very high, but in use, the purity requirement of guanidine thiocyanate is very high in some occasions

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Prepn of guanidyl thiocyanate
  • Prepn of guanidyl thiocyanate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] A preparation method of guanidinium thiocyanate, which has the following process flow: a, putting guanidine carbonate and ammonium thiocyanate with a weight ratio of 2:1 into a reactor, and reacting for 2 hours at 50-90° C. to obtain thiocyanate Crude guanidine;

[0017] B, dissolving, at normal temperature, the guanidine thiocyanate crude product is dissolved in water in a ratio of 1:1 by weight;

[0018] c. Filtration, to remove impurities such as raw materials and reaction by-products by filtration;

[0019] d, dehydration, the mother liquor after filtering is dehydrated at high temperature;

[0020] e, crystallization, cooling the supersaturated solution, concentrating and crystallizing, and obtaining guanidine thiocyanate with a purity greater than 99%.

[0021] Further: the guanidinium thiocyanate after the e step is passed through b, c, d, e steps again, wherein in the b step, the weight ratio with water is 1: 1, in order to obtain the guanidine thiocyanate wit...

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

PUM

No PUM Login to View More

Abstract

The present invention relates to chemical product and is especially the preparation process of guanidyl thiocyanate. The technological process includes the following steps: melting, dissolving, filtering, dewatering and crystallization, and can obtain high-purity guanidyl thiocyanate. The technological process is simple, practical and reasonable, and the guanidyl thiocyanate product has high quality and high purity over 99%.

Description

Technical field [0001] The present invention relates to a kind of production method of chemical product, especially the preparation method of guanidine thiocyanate. Background technique [0002] Guanidine thiocyanate, chemical name: urea thiocyanate, English name: Guanidine thio cyanate salt, its molecular formula is: (NH 2 ) 2 C: NH·HSCN (118.2). It is a white crystal with a melting point of 116-121°C. At 20°C, the pH value of 6mol / L in water is 4.5-6, and the solubility is completely dissolved. Can be used as biochemical reagents, pharmaceutical intermediates. It is used for degreasing in the oil industry, as a strong lipid degrading agent in daily chemical industry, and as a cell membrane breaking agent in biopharmaceuticals. Its structural formula is: [0003] [0004] In the current production process, the purity of the product obtained is not very high, but in use, the purity requirement of guanidine thiocyanate is very high in some occasions. Contents of the...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C279/02C07C277/04C07C277/06
Inventor 方建文
Owner 方建文