Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ball shaped 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), preparation and equipment

A technology of diaminodiphenylmethane and diaminodiphenyl, which is applied in the field of preparation of organic compound dosage forms, can solve problems such as the advent of dosage forms, and achieve the effects of reducing labor intensity and workload, simple design structure, and easy operation.

Active Publication Date: 2008-10-01
SUZHOU XIANGYUAN SPEICAL FINE CHEM
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no satisfactory dosage form available

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
  • Ball shaped 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), preparation and equipment
  • Ball shaped 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), preparation and equipment
  • Ball shaped 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA), preparation and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] The process operation is as follows: in the 3000L melting pot 3, add powdered MOCA from 2, heat it to 105-108°C to melt it, and use the quantitative pump 4 to pass through the tower at a pressure of 0.3-0.5 MPa. The solid melt material inlet 5 enters the spray head 6 and sprays upwards. Under the action of gravity, the sprayed fine liquid flow immediately descends and is entered by the air inlets 8, 9, 10, 11, and 12 of the free tower body 1. Under the action of the spiral air flow from bottom to top, the thin liquid flow is stripped into fine droplets and continues to descend. Based on the fact that the tower body 1 itself is an environment with different temperature gradients, the usual situation is that from the initial normal temperature state of operation, the temperature is gradually raised to 90-95°C in the upper part of the tower body, 80-85°C in the middle part, and 80-85°C in the lower part. 40-45°C. The fine droplets formed above will be cooled into regular ...

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 provides a spherical grain-shaped 3, 3'-dichloride-4, 4'-diamino diphenylmethane (MOCA), a preparation method and equipments. The spherical grain-shaped MOCA is melted into liquid from powder-shaped MOCA, is then delivered to a nozzle which is arranged at the upper part in a granulation tower and is then upwards injected out; trickle-shaped liquid contacts the ascending airflow during the descending process, is peeled off as fine droplets, is cooled as spherical grain-shaped solids by the air during the falling process, is subsequently brought into a cyclone separator by the air for winnowing and enters a finished product chamber, with the small grains and powder-shaped material recovered and reused. The obtained product is spherical grains with the diameters of 1.9-2.1mm, with smooth and yellow surface and quality index completely complying with the existing powder-shaped MOCA; the surface of the obtained product is small and beneficial for storage and usage; when in use, no dusts flies, the poisoning possibility of in-situ personnel is avoided or reduced; meanwhile, the MOCA is more beneficial for pipeline negative pressure transport. During the production and application process, the environment is clean and the production is safe without exhaust of contamination.

Description

technical field [0001] The invention belongs to the preparation technology of the organic compound dosage form of diphenylmethane containing chlorine and amino groups, and relates to a chain extender in the preparation of polyurethane; meanwhile, it also relates to its special granulation equipment. Background technique [0002] 3,3'-dichloro-4,4'-diaminodiphenylmethane (MOCA hereinafter the same) is a chain extender / curing agent for the preparation of polyurethane (PU hereinafter the same) polymer materials, with the PU market The rapid development of its various additives is also increasing, MOCA is also showing an upward trend. [0003] It is well known that MOCA is an aromatic amine compound with acute and chronic toxicity. Improper use will cause personnel poisoning and pollute the environment. In the domestic and foreign markets, manufacturers generally provide users with powder or irregular flake appearance. Powdered MOCA has a large specific surface area, which is ...

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
IPC IPC(8): B01J2/04C07C211/52
Inventor 周建丛亨滋龚文林
Owner SUZHOU XIANGYUAN SPEICAL FINE CHEM
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com