Water repellent aqueous wood treating solutions
US4335109A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1980 |
| Grant date | Jun 15, 1982 |
| Priority date | — |
| Expiry date | Dec 15, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/66
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An increased water repellency is imparted to wood and other cellulosic materials with an aqueous solution containing a mixture of an aluminum halohydrate and a water soluble salt of a mono, di or trivalent cation selected from zinc, manganese, barium, calcium, cobalt, magnesium, nickel, copper, cadmium, strontium, beryllium, lead, mercury, chromium, sodium, lithium, and potassium and a monovalent anion selected from formate acetate, haloacetate, acrylate, methacrylate, propionate, chloro and bromo-propionate, butyrate, isobutyrate, nitrate, sulfamate, iodide, bromide, and chloride, said water soluble salt excluding the nitrates, sulfamates, chlorides and bromides of sodium, potassium and lithium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.