Method of manufacturing cross-linked moulded objects from cross-linkable polymeric materials
US4138462A · kind A · utility
21Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1976 |
| Grant date | Feb 6, 1979 |
| Priority date | — |
| Expiry date | Apr 14, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J3/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The cross-linking of a moulded object based on polymeric materials is effected by heating the object in the presence of a liquid medium containing one or more peroxides under conditions that cause penetration, and the heating is continued at increasing temperatures to cause a homogeneous cross-linking. Employable peroxides are substantially stable under the first heating step but are cleaved into free radicals during the second heating step, at least the cross-linking step being carried out with the object enclosed in a liquid of approximately the same density as the polymeric material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.