Methods for forming porous-surfaced polymeric bodies
US4906423A · kind A · utility
112Cited by
40References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Oct 23, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C67/202
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a polymeric body having a porous surface by (a) applying a fluid polymeric composition to a mold surface of a leachable foam having open pores thereon, (b) curing the composition to form the polymeric body, and (c) leaching the foam from the polymeric body with a suitable solvent which does not dissolve the polymeric body. The method is especially suitable for making porous silicone elastomer bodies by using polystyrene foam as the mold material and the method is useful for forming hollow, porous-surfaced polymeric bodies, e.g. mammary and vascular prostheses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.