Copolymers and oil-and water-repellent compositions containing them
US6380336B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Apr 10, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/653
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a copolymer capable of forming a water- and oil-repellent agent that enables binding to textiles and other materials without the production of formaldehyde. The copolymer according to the present invention comprises a) a fluoroaliphatic radical-containing agent, (b) stearyl (meth)acrylate; (c) a chlorine-containing compound; and (d) a monomer selected from those that contain an anhydride functional group or are capable of forming an anhydride functional group.The present invention further provides a water and oil repellency-imparting composition for fibrous and other substrates, the composition comprising the above copolymer together with a catalyst, such as sodium hypophosphite, for forming anhydrides from the acid-containing monomers in the copolymer. The composition can further optionally comprise other additives such as, e.g., poly(acrylic acid); an extender; a softener; an antioxidant; a surfactant; and/or a plasticizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.