Oriented gel and oriented gel articles
US5962572A · kind A · utility
128Cited by
86References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1995 |
| Grant date | Oct 5, 1999 |
| Priority date | — |
| Expiry date | Dec 29, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/025
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Oriented gels aliened by controlled stretching during the gel's transition from a heated, extremely viscous, non melting, non flowing state and the cooled solid gel state produces strong gels which are found to have greater tensile strength than gels of the same rigidity which have not been stretched to a selected degree during its heating and cooling histories. Gels which are selectively stretched during its (non melt flowing) heated state and rapidly cooled by flowing air, cold liquid bath or in contact with a cool surface exhibit optical birefringence when viewed under plane-polarized light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.