Global patent index - EP 0632970 B1

EP 0632970 B1 2000-01-12 - Cellulose acetate based products, their use in the manufacture of filtertows for the production of tobacco smoke filters as well as filtertows and tobacco smoke filters

Title (en)

Cellulose acetate based products, their use in the manufacture of filtertows for the production of tobacco smoke filters as well as filtertows and tobacco smoke filters

Title (de)

Aus Celluloseacetat geformte Gebilde, deren Verwendung zur Herstellung von Filtertow,Verwendung des Filtertows zur Herstellung eines Tabakrauchfilterelements sowie Filtertow und Tabakrauchfilterelement

Title (fr)

Produits à base d'acétate de cellulose, leur utilisation pour la fabrication de cordons filtrants pour la fabrication de filtres à fumée de tabac ainsi que les cordons filtrants et filtres à cigarettes

Publication

EP 0632970 B1 (DE)

Application

EP 94107825 A

Priority

DE 4322966 A

Abstract (en)

[origin: EP0632970A2] Described are shaped cellulose acetate articles within which or on whose surface is present an additive, said additive consisting of a nitrogen-containing organic compound whose degradation through microorganisms gives rise to basic decomposition products, in particular ammonia and/or basic compounds having an NH group or NH groups and/or an NH2 group or NH2 groups. The articles can have the shape of filaments, fibres, films, sheets, plates or other structures. The invention also relates to the use of the articles in the form of filaments and/or fibres for the manufacture of filter tow, to such a filter tow and to the use of such a filter tow for manufacturing a tobacco smoke filter element and to such a tobacco smoke filter element. The articles, the filter tow and the tobacco smoke filter element of the invention show improved biodegradation under the action of environmental influences, but the filter tow and the tobacco smoke filter element can be stored under the conditions customary today without risk of microbiological degradation.

IPC 1-7 (main, further and additional classification)

A24D 3/10; A24D 3/14

IPC 8 full level (invention and additional information)

A24C 5/47 (2006.01); A24D 3/02 (2006.01); A24D 3/10 (2006.01); A24D 3/14 (2006.01); B01D 39/16 (2006.01); D01F 2/28 (2006.01)

CPC (invention and additional information)

A24D 3/068 (2013.01); A24D 3/10 (2013.01); A24D 3/14 (2013.01)

Designated contracting state (EPC)

BE DE GB IT NL

EPO simple patent family

EP 0632970 A2 19950111; EP 0632970 A3 19950419; EP 0632970 B1 20000112; CA 2124629 A1 19950110; CA 2124629 C 20010417; CN 1097962 A 19950201; CN 1176077 A 19980318; DE 4322966 A1 19950112; DE 4322966 C2 19951026; EE 03200 B1 19990816; JP 2838256 B2 19981216; JP H0799959 A 19950418; LT 3712 B 19960226; LT IP1995 A 19950227; RU 2082302 C1 19970627; RU 94026291 A 19960720; US 5495860 A 19960305

INPADOC legal status

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2000-06-05 [NLV1] NL: LAPSED OR ANNULLED DUE TO FAILURE TO FULFILL THE REQUIREMENTS OF ART. 29P AND 29M OF THE PATENTS ACT

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