System and method of particulating 4,4' methylenebis (2-chloroaniline)
US4631156A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1984 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Jul 27, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B9/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The specification discloses a system and method for producing a particulate MBOCA product including relatively uniformly sized granules. The system includes a pan granulator, a dust hood enclosing the granulator pan, and a blower for circulating an air stream through the hood to carry away the heat of fusion of the granulation. In a second aspect, the system includes a novel drum charging apparatus having a filler tube extendable into a drum, a dust cup covering the drum opening when the filler tube is inserted therein, and a vacuum for drawing air through the dust cup. Air displaced from the drum and product particles dispersed therein are therefore drawn into the vacuum for subsequent recovery of product particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.