| (19) |
 |
|
(11) |
EP 0 533 005 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
04.08.1993 Bulletin 1993/31 |
| (43) |
Date of publication A2: |
|
24.03.1993 Bulletin 1993/12 |
| (22) |
Date of filing: 05.09.1992 |
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| (84) |
Designated Contracting States: |
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AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE |
| (30) |
Priority: |
16.09.1991 US 760674
|
| (71) |
Applicant: HOECHST CELANESE CORPORATION |
|
Somerville, N.J. 08876 (US) |
|
| (72) |
Inventors: |
|
- Felton, Clinton Dale
Charlotte,
North Caroline 28226 (US)
- Serad, George Allibone
Charlotte,
North Carolina 28210 (US)
- Gibson, Baylor Dee
Charlotte, NC 28209 (US)
- McNair, Samuel Scott, Jr.
Shanghai 200335 (CN)
|
| (74) |
Representative: von Kreisler, Alek, Dipl.-Chem. et al |
|
Patentanwälte
von Kreisler-Selting-Werner
Postfach 10 22 41
50462 Köln
50462 Köln (DE) |
|
| |
|
| (54) |
Cellulose ester fibrillar material having additives imbedded on a surface thereof |
(57) Cellulose ester fibrillar material having additives imbedded in or impregnated upon
a surface of said fibrillar material is disclosed herein. The method comprises the
steps of: providing a polymer solution or "dope", coagulation liquid, and additive;
mixing the polymer solution and coagulation liquid within the attenuation zone of
a nozzle; adding the additive to the mixture within the attenuation zone of the nozzle;
and thereby forming the fibrillar material.