Quaternary ammonium carboxylate and borate compositions and preparation thereof
US5641726A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1993 |
| Grant date | Jun 24, 1997 |
| 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
Wood preservative systems comprising (a) a biocidal effective amount of (i) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium carboxylate having the formula ##STR1## wherein R.sup.1 and R.sup.2 are a C.sub.8 -C.sub.12 alkyl group; R.sup.3 is a substituted or unsubstituted, interrupted or uninterrupted C.sub.1 -C.sub.100 group; l and q independently are 1, 2 or 3 and (l)(q) is 1, 2, or 3; and n is 0 or an integer from 1 to 50; (ii) at least one di C.sub.8 -C.sub.12 alkyl quaternary ammonium borate having the formula ##STR2## wherein R.sup.1 and R.sup.2 are defined as above, and a is 2 or 3, but when a is 2, b is 0 or 1, and when a is 3, b is 0, 1, or 2; or (iii) a combination of (i) and (ii); and (b) a solvent are provided. These carboxylate quats as well as carboxylate quats wherein R.sup.1 is a C.sub.1 -C.sub.20 alkyl or aryl-substituted alkyl group and R.sup.2 is a C.sub.8 -C.sub.20 alkyl group are preferably prepared by an indirect or a direct synthesis. The indirect synthesis includes reacting a corresponding quaternary ammonium carbonate with a carboxylic acid, while the direct synthesis method includes reacting a corresponding quaternary ammonium chloride with a met…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.