Quaternary ammonium hydroxide compositions and preparation thereof
US5399762A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Jun 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/662
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high yield method for the preparation of C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl, C.sub.8 -C.sub.16 alkyl quaternary ammonium-hydroxide is provided whereby two reactants, a corresponding quaternary ammonium chloride and a metal hydroxide, are reacted in a solvent comprising a C.sub.1 -C.sub.4 normal alcohol. The amount of metal hydroxide reactant is that amount sufficient to yield the quaternary ammonium hydroxide and a metal chloride. Also provided are wood preservative systems which include (a) a biocidal effective amount of at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium hydroxide and (b) a solvent, as well as a method for preserving a wood substrate whereby the substrate is treated with the preservative system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.