Deodorizing material and process for producing the same: cellulose fibers treated with copper hydroxide or zinc hydroxide colloid solution
US5049159A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06M11/44
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention is concerned with a process for producing deodorizing cellulose fibers on which a considerable amount of copper hydroxide and/or zinc hydroxide is fixed highly strongly, which process is characterized in that cellulose fibers are allowed to contact with a colloidal solution of copper hydroxide and/or zinc hydroxide prepared by adding an alkaline substance to an aqueous solution of a water-soluble copper compound and/or a water-soluble zinc compound. Deodorizing fibers so obtained are capable of effectively removing malodorous gaseous substances, such as hydrogen sulfide, ammonia, methyl mercaptan, etc., and exhibit excellent deodorizing effects. In addition, the deodorizing fibers, although they can be an excellent deodorizing material as they are, are excellent in workability and hence can be used in the form of a shaped product, including, e.g., granules, sheets, etc. They can therefore be applied to various uses in the field of deordorization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.