Aqueous dispersions of polysiloxanes
US5403886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 27, 1992 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | May 27, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M15/643
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Aqueous dispersions which are suitable for the treatment of fibre materials, in particular textile materials, contain a polysiloxane having on average at least two hydroxyl groups bound to one silicon atom each and one polysiloxane having on average at least one amido group in the molecule. If the amidopolysiloxane does not contain a primary amino group, a third polysiloxane containing at least one primary amino group in the molecule must be additionally present in the dispersion. The fibre materials treated with these dispersions have a pleasant soft handle and a low tendency to yellow. The dispersant content can be lower than in known dispersions of amido-functional polysiloxanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.