Articles having shape recovering properties and a method for using it
US4831094A · kind A · utility
16Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Nov 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2086/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Articles having shape recovering properties and methods of using them are disclosed. An article is formed from a composition containing a norbornene polymer by forming said polymer into an article having a first shape, then deforming the article in the solid state to a second shape and cooling the article to a first temperature at or below the glass transition temperature of the polymer to retain said second shape, and finally heating said article to a temperature above the first temperature to recover the first shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.