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

Method for regulating and controlling crystal habits of propyzamide with solvent

A technology for regulating pentynclochlor and solvent, which is applied in the fields of organic chemistry methods, separation/purification of carboxylic acid amides, organic chemistry, etc., and can solve problems such as non-uniform crystal habit of pentynclochlor

Active Publication Date: 2019-10-01
HARBIN INST OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of non-uniform crystal habit of the existing pentynclodamide, and provide a method for solvent regulation and control of the crystal habit of pentynclod

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
  • Method for regulating and controlling crystal habits of propyzamide with solvent
  • Method for regulating and controlling crystal habits of propyzamide with solvent
  • Method for regulating and controlling crystal habits of propyzamide with solvent

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0032] Specific implementation mode one: this implementation mode is a method for solvent regulation and control of the crystal habit of fenpyrald, which is specifically completed according to the following steps:

[0033] 1. Configure saturated solution: at temperature T 0 down, follow T 0 The mass ratio of pentarynclod in the solvent is a saturated solution when pentarynclod is added to the solvent to obtain a saturated solution of pentarynclod; 298.15K0 ≤328.15K;

[0034] 2. Heating treatment: transfer the saturated solution of pentynchlor to the crystallizer, adjust the water bath to make the temperature from T 0 Raise 5~10K to T 1 , at temperature T 1 Keep it down for 60 minutes;

[0035] 3. Crystallization: adjust the water bath to make the temperature from T 1 Decrease until it is in the metastable zone, and the solute molecules are nucleated and precipitated, at this time the temperature is T 2 , and then under the condition that the supersaturation is kept const...

specific Embodiment approach 2

[0036] Embodiment 2: The difference between this embodiment and Embodiment 1 is: the crystal habit of the pentoxychlor crystals described in step 1 is a needle-like crystal habit, and the solvent is an aromatic solvent. Others are the same as the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the aromatic solvent is benzene, toluene or xylene. Others are the same as in the second embodiment.

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 invention relates to a method for regulating and controlling the crystal habits of propyzamide with a solvent. The method aims to solve the problem that the crystal habits of previous propyzamideare not uniform. The method comprises the steps of 1, preparation of a saturated solution, 2, heating treatment and 3, crystallization for obtaining propyzamide crystals. The method has the advantagesthat through the process of regulating and controlling the crystal habits of propyzamide with the solvent, the technical operation is simple, the crystal structure of a product is complete, the shapeand the appearance are uniform, and the purity is high. The method is mainly used for regulating and controlling the crystal habits of propyzamide.

Description

technical field [0001] The invention relates to a method for regulating the crystal habit of pentynclochlor. Background technique [0002] Penpyramide [C 12 h 7 Cl 2 NO, 3,5-dichloro-N-(1,1-dimethylpropynyl) benzamide, English name: Propyzamide], the structural formula is as follows figure 1 shown. Penpyroxyl is a colorless crystalline solid and is a widely used amide herbicide, often used for the control of broadleaf weeds. Compared with other types of herbicides, pentynchlor has the characteristics of high selectivity, low toxicity, low cost and high efficiency. [0003] Crystal habit is an important indicator of crystal products, which directly or indirectly affects the production process of crystal products and the physical and chemical properties of crystal products. Crystal habit refers to the external macroscopic shape of crystal particles, which is the result of the interaction between the internal structure characteristics of the crystal and the external growt...

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 Applications(China)
IPC IPC(8): C07C231/24C07C233/65
CPCC07C231/24C07B2200/13C07C233/65
Inventor 宋梁成崔莹贝王冠杨春晖
Owner HARBIN INST OF TECH