Method of making porous objects of ultra high molecular weight polyethylene
US3954927A · kind A · utility
44Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 16, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2201/0546
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method is disclosed for preparing a porous structure of ultra high molecular weight polyethylene. A heterogeneous composite of the polyethylene and a particular hydrocarbon is heated to a temperature above the melting point of the hydrocarbon but below the melting point of the polyethylene. The composite is then shaped. After such shaping the temperature is then raised to a temperature above the melting point of the polyethylene and maintained until complete fusion of the polyethylene particles occurs. Thereafter the hydrocarbon is extracted from the cooled shaped structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.