Delayed action drain cleaner compositions
US5008029A · kind A · utility
4Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Nov 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D7/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Sequential coatings of a quickly water soluble or dispersible coating material and a mixture of hydrophobic materials having varying hydrophobic characteristics delay the exothermic reaction which takes place when an alkali metal hydroxide comes into contact with water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.