| (19) |
 |
|
(11) |
EP 0 046 346 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
24.08.1983 Bulletin 1983/34 |
| (43) |
Date of publication A2: |
|
24.02.1982 Bulletin 1982/08 |
| (22) |
Date of filing: 28.07.1981 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB IT |
| (30) |
Priority: |
18.08.1980 US 178661
|
| (71) |
Applicant: Akzona Incorporated |
|
() |
|
| (72) |
Inventor: |
|
- Kramers, Aloysius Antonius Josephus
()
|
|
| |
|
| (54) |
Latent contractable elastomers, composite yarns therefrom and methods of formation
and use |
(57) This invention relates to melt extruded latent contractable elastic filaments which
are formed by melt extruding certain segmented crosslinked thermoplastic polymers
to form filaments, which filaments, when heat processed at elevated temperatures,
significantly contract to yield an elastic filament. This invention also relates to
the formation of composite covered yarns comprising the latent contractable melt extruded
filaments. In addition, this invention relates to processes for forming articles from
the latent contractable filaments or covered yarns comprising the contractable filaments
and subsequently contracting the yarns to form an elastic article.