EP 0211851 A4 19880128 - COMPOSITIONS THAT SOFTEN AT PREDETERMINED TEMPERATURES AND THE METHOD OF MAKING SAME.
Title (en)
COMPOSITIONS THAT SOFTEN AT PREDETERMINED TEMPERATURES AND THE METHOD OF MAKING SAME.
Title (de)
BEI VORBESTIMMTER TEMPERATUR SCHMELZENDE ZUSAMMENSETZUNGEN UND HERSTELLUNG.
Title (fr)
COMPOSITIONS SE RAMOLLISSANT A DES TEMPERATURES PREDETERMINEES, ET PROCEDE DE PRODUCTION.
Publication
Application
Priority
US 68879385 A 19850104
Abstract (en)
[origin: EP0422693A2] 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.
IPC 1-7
A61M 25/00; A61M 31/00; B29C 35/16; B29C 41/46; B29C 61/06; C08F 20/04; C08F 112/08; C08F 114/06; C08F 283/04; C08G 18/10
IPC 8 full level
A61K 9/20 (2006.01); A61K 9/22 (2006.01); A61L 26/00 (2006.01); A61L 29/04 (2006.01); A61L 29/14 (2006.01); B29C 61/00 (2006.01); C08G 18/10 (2006.01); C08L 71/00 (2006.01); C08L 75/04 (2006.01); C08L 75/06 (2006.01); C08L 101/00 (2006.01)
CPC (source: EP KR)
A61K 9/2031 (2013.01 - EP); A61K 9/204 (2013.01 - EP); A61L 29/049 (2013.01 - EP); A61L 29/14 (2013.01 - EP); A61L 29/141 (2013.01 - EP); A61M 25/00 (2013.01 - KR); B29C 61/003 (2013.01 - EP); C08G 18/10 (2013.01 - EP); C08L 71/00 (2013.01 - EP); C08L 75/04 (2013.01 - EP); C08L 75/06 (2013.01 - EP); C08L 101/00 (2013.01 - EP); A61L 2400/16 (2013.01 - EP); C08G 2280/00 (2013.01 - EP); C08L 2203/02 (2013.01 - EP)
C-Set (source: EP)
Citation (search report)
- EP 0087329 A1 19830831 - LHD LAB HYGIENE DIETETIQUE [FR]
- US 4473671 A 19840925 - GREEN RICHARD [US]
- EP 0129396 A2 19841227 - HOWMEDICA [US]
- FR 2546170 A1 19841123 - AKZO NV [NL]
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8603980 A1 19860717; AT E124072 T1 19950715; AU 5302086 A 19860729; DE 3650342 D1 19950727; DE 3650342 T2 19951102; EP 0211851 A1 19870304; EP 0211851 A4 19880128; EP 0422693 A2 19910417; EP 0422693 A3 19910717; EP 0422693 B1 19950621; JP S62501778 A 19870716; KR 870700372 A 19871228
DOCDB simple family (application)
US 8600006 W 19860106; AT 90123938 T 19860106; AU 5302086 A 19860106; DE 3650342 T 19860106; EP 86900644 A 19860106; EP 90123938 A 19860106; JP 50050087 A 19860106; KR 860700617 A 19860904