Paint detackification using an improved oil-in-water emulsion with dibasic ester
US4919691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1989 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Apr 17, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/71
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a method of recovering volatile organic paint carrier from paint spray booths and also collecting, detackifying, and dispersing paint solids obtained from paint overspray in said paint spray booths, which paint spray booths are of the type comprising a chamber, a duct system for passing air through said chamber, an exhaust system connected to said duct system, a sump containing a circulating hydrophilic liquid which is pumped onto a means for forming a liquid curtain of said hydrophilic liquid, said liquid curtain being contacted by oversprayed paint and volatile organic paint carrier; the improvement which comprises using as the hydrophilic liquid an improved oil-in-water emulsion maintained at a pH value ranging from 7.5-11.0, which emulsion consists essentially of the ingredients: PA1 (a) from 5-50 weight percent, of an organic hydrocarbonaceous liquid having a boiling point of at least 150.degree. C.; PA1 (b) from 0.5-20 weight percent, based on the organic hydrocarbonaceous liquid of an oil-in-water emulsifier; PA1 (c) from 5-100 weight percent, based on the organic hydrocarbonaceous liquid, of a polar organic solvent, which polar organic solvent has a water solubility of l…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.