Process for printing synthetic, hydrophobic fiber material
US4349348A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1981 |
| Grant date | Sep 14, 1982 |
| Priority date | — |
| Expiry date | May 18, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/3608
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved textile materials are produced having white or variously colored designs on a colored substrate on textile materials containing hydrophobic, synthetic fibers by impregnating the materials with dye liquors containing dyeing and padding auxiliaries as well as dyestuffs dischargeable to white, drying or incipiently drying the impregnated materials and then printing a desired pattern onto the materials with a discharge reserve paste containing a discharging agent, and subsequently subjecting the materials to a heat treatment at temperatures from 100.degree. to 230.degree. C., the improvement comprises the dyestuffs dischargeable to white being dyestuffs of the formula ##STR1## wherein n is a number from 1 to 9; and said discharging agent being a base which produces a pH value of at least 8 in a 5% strength aqueous solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.