Title:
【発明の名称】予定温度で軟化する組成物およびその製法
Document Type and Number:
Japanese Patent JPS62501778
Kind Code:
A
Abstract:
Object of the invention is a method for making an article with shape-memory properties comprising the steps of heating a composition comprising at least one block copolymer, said composition characterized by at least two thermal transition temperatures, one of said transition temperatures being a predetermined lower transition temperature in the range of 20 DEG C to 62 DEG C, the other of said transition temperatures being an upper transition temperature above 62 DEG C, said composition further characterized by the physical properties of a polymer selected from the group consisting of rigid, crystalline polymers and rigid, glassy polymers, below said predetermined lower transition temperature and the physical properties of a flexible, rubbery polymer at and above said predetermined lower transition temperature but below said upper transition temperature, to a temperature above said upper transition temperature, orienting said composition under stress into a first configuration, cooling said composition to below said predetermined lower transition temperature while said composition is in said first configuration, and cold forming said composition into a second configuration, as well as some of the thus obtained articles.
Inventors:
Solodfnik, Warrentin Dmitry Witch
Ward Robert S
Rifle Judy S
Ward Robert S
Rifle Judy S
Application Number:
JP50050087A
Publication Date:
July 16, 1987
Filing Date:
January 06, 1986
Export Citation:
Assignee:
SORATETSUKU Laboratory-SCO-Pole-Syon
International Classes:
A61K9/20; A61K9/22; A61L26/00; A61L29/04; A61L29/14; B29C61/00; C08G18/10; C08L71/00; C08L75/04; C08L75/06; C08L101/00; (IPC1-7): A61L29/00; C08L101/00
Domestic Patent References:
| JPS5953528A | 1984-03-28 | |||
| JPS59204541A | 1984-11-19 | |||
| JPS5828096A | 1983-02-18 | |||
| JPS5310875A | 1978-01-31 | |||
| JPS6028433A | 1985-02-13 |
Attorney, Agent or Firm:
Minoru Nakamura