Method for improving the fastness of dyeings and optical brightenings with amine, cyanamide derivative and epihalohydrin condensate
US4559058A · kind A · utility
4Cited by
4References
45Claims
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Key dates
| Filing date | Jun 28, 1984 |
| Grant date | Dec 17, 1985 |
| Priority date | — |
| Expiry date | Jun 28, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A precondensate obtained by reacting PA0 (A) the product of reacting a mono- or polyfunctional primary or secondary amine with cyanamide, dicyandiamide, guanidine or biguanidine and PA0 (B) an epihalohydrin is obtained in the form of a stable aqueous dispersion by acidifying the reaction product, optionally in the presence of a water-soluble polymer. The product is useful as an after-treatment agent to improve the fastness of dyeings on cotton, wool or silk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.