EP 1538261 A1 20050608 - Process for flame-proofing of fibrous products
Title (en)
Process for flame-proofing of fibrous products
Title (de)
Verfahren zur flammhemmenden Ausrüstung von Faserprodukten
Title (fr)
Procédé d'ignifugation de produits fibreux
Publication
Application
Priority
EP 03027959 A 20031205
Abstract (en)
A method for flameproofing cellulose-based fibre products or preferably their precursors involves treatment with (A) a branched polyethyleneimine containing prim., sec. and tert. amino groups and (B) a phosphonic acid with one of three specified formulae. A method for flameproofing fibre products containing 20-100 wt% cellulose fibres involves treating the product (or preferably a precursor thereof) successively or simultaneously with components (A) and (B). (A) is a branched polyethyleneimine (PEI) with prim., sec. and tert. amino groups, showing a weight-average mol. wt. (M w) of 5000-1500000 (preferably 10000-1000000), a numerical ratio of (sec.):(prim.) amino groups = (1.00:1)-(2.50:1) and a ratio of (sec.):(tert.) amino groups = (1.20:1)-(2.00:1), or a mixture of such PEI. (B) is a phosphonic acid of formula (I), (II) or (III), or a mixture of such compounds, in which up to 50 % of the hydrogen atoms on the P-bonded OH groups may be replaced by an alkali metal or ammonium, but preferably 100 % of these groups are not neutralized; [Image] [Image] y : 0, 1 or 2, preferably 0; R 1>H or OH; R : 1-7C alkyl if R 1> is OH, or 3-7C alkyl if R 1> is H; R 2>-P(O)(OH) 2; R 3>H or R 2>, preferably R 2>; R 4>H or -CH 2-P(O)(OH) 2 or a group of formula (IV), preferably with 50-100 % of all R 4> groups which are present representing -CH 2-P(O)(OH) 2; t : 0 or 1-10. [Image].
Abstract (de)
Bei Faserprodukten, welche 20 bis 100 Gew% Cellulosefasern enthalten, lassen sich flammhemmende Eigenschaften dadurch erzielen, dass man auf die Faserprodukte oder auf Vorstufen davon ein Polyethylenimin und eine Phosphonsäure aufbringt. Die Vorstufen der Faserprodukte können wässrige Fasersuspensionen sein, welche zu Papier oder Faserpressplatten weiterverarbeitet werden.
IPC 1-7
IPC 8 full level
D06M 13/00 (2006.01); D06M 13/282 (2006.01); D06M 13/288 (2006.01); D06M 13/292 (2006.01); D06M 13/332 (2006.01); D06M 15/61 (2006.01); D21H 21/34 (2006.01); D21J 1/08 (2006.01); D21H 17/10 (2006.01); D21H 17/56 (2006.01)
CPC (source: EP US)
D06M 13/282 (2013.01 - EP US); D06M 13/288 (2013.01 - EP US); D06M 13/292 (2013.01 - EP US); D06M 13/332 (2013.01 - EP US); D06M 15/61 (2013.01 - EP US); D21H 21/34 (2013.01 - EP US); D06M 2200/30 (2013.01 - EP US); D21H 17/10 (2013.01 - EP US); D21H 17/56 (2013.01 - EP US); D21H 17/74 (2013.01 - EP US)
Citation (search report)
- [A] EP 0542071 A1 19930519 - WOLMAN GMBH DR [DE]
- [A] EP 0599812 A2 19940601 - CHISSO CORP [JP]
- [A] EP 0401538 A2 19901212 - CHISSO CORP [JP]
- [A] WO 0029490 A2 20000525 - COLLOID SURFACE TECHNOLOGIES G [DE], et al
- [A] EP 0451665 A1 19911016 - ALBRIGHT & WILSON [GB]
- [A] US 2632743 A 19530324 - ECKERT LEWIS W
- [A] GB 1450446 A 19760922 - UNITED MERCHANTS & MFG
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1538261 A1 20050608; AU 2004295417 A1 20050616; CA 2541504 A1 20050616; EP 1697589 A1 20060906; US 2007082139 A1 20070412; WO 2005054576 A1 20050616
DOCDB simple family (application)
EP 03027959 A 20031205; AU 2004295417 A 20041125; CA 2541504 A 20041125; EP 04819618 A 20041125; EP 2004013357 W 20041125; US 58073904 A 20041125