EP 0591361 A4 19940518 - METHOD FOR DYEING NYLON FILAMENTS
Title (en)
METHOD FOR DYEING NYLON FILAMENTS
Publication
Application
Priority
- US 9204589 W 19920602
- US 71619691 A 19910617
Abstract (en)
[origin: WO9222699A1] A method for dyeing nylon filaments for use in wear-indicating toothbrushes includes immersing a batch of a first nylon filament for between 10 minutes and 80 minutes in an aqueous solution containing between 0.01 % and 0.19 % weight to volume of Indigotine dye, said solution having a pH between 1 and 7 and having a temperature between 50 DEG C and 90 DEG C, the dye penetrating into the filament to color an outer cross-sectional region and not penetrating into an inner cross-sectional region of the filament; removing the batch of the first nylon filament from the solution, and repeating the steps for a batch of a second nylon filament, reusing the same solution.
IPC 1-7
IPC 8 full level
A46D 1/04 (2006.01); D06P 1/00 (2006.01); D06P 3/00 (2006.01); D06P 3/24 (2006.01)
CPC (source: EP)
A46B 15/001 (2013.01); A46D 1/04 (2013.01); D06P 1/002 (2013.01); D06P 3/241 (2013.01)
Citation (search report)
- [DX] US 4802255 A 19890207 - BREUER MIKLOS M [US], et al
- [X] CHEMICAL ABSTRACTS, vol. 104, no. 18, 5 May 1986, Columbus, Ohio, US; abstract no. 150660v, BARYBINA, L. A. ET AL: "Multiple use of residual dye solutions" & TEKST. PROM-ST. (MOSCOW), (12), 55, 1985
- See references of WO 9222699A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU MC NL
DOCDB simple family (publication)
WO 9222699 A1 19921223; AU 2186292 A 19930112; AU 663099 B2 19950928; BR 9206016 A 19940802; CA 2109935 C 20000125; CN 1051118 C 20000405; CN 1067936 A 19930113; DE 69216234 D1 19970206; DE 69216234 T2 19970605; EP 0591361 A1 19940413; EP 0591361 A4 19940518; EP 0591361 B1 19961227; JP 2831465 B2 19981202; JP H06503860 A 19940428; KR 100205843 B1 19990701; MX 9202915 A 19930101; SG 48428 A1 19980417; ZA 923986 B 19930224
DOCDB simple family (application)
US 9204589 W 19920602; AU 2186292 A 19920602; BR 9206016 A 19920602; CA 2109935 A 19920602; CN 92104692 A 19920616; DE 69216234 T 19920602; EP 92913760 A 19920602; JP 50072693 A 19920602; KR 930703630 A 19931125; MX 9202915 A 19920616; SG 1996009602 A 19920602; ZA 923986 A 19920601