Preparation of polymer composites
US4028255A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Oct 6, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for the preparation of composite particles having a specified range of particle size and comprising a finely divided, magnetic, particulate material embedded in a matrix of a linear polymeric material, which method comprises the steps of: PA1 A. forming discrete liquid droplets consisting of or containing the polymer, together with the particulate material; PA1 B. causing or allowing the droplets to form into solid particles; PA1 C. separating from the thus-formed particles those of the desired size range; PA1 D. re-converting the remaining particles to liquid form; and PA1 E. returning the re-liquified particles to step (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.