Aqueous multiphase dispersions for multicolor coatings
US6005031A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Aug 17, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D7/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous multiphase dispersions for multicolor coatings are produced by a process essentially comprising the steps of: PA1 providing one or more emulsion paints; PA1 adding at least one linear colloid capable of being insolubilised by borate ions and at least one hydrophilic inorganic clay to said paints to form base paints; PA1 providing an aqueous medium containing at least one hydrophilic inorganic clay; PA1 adding said base paints into said aqueous medium; PA1 adding borate ions to said aqueous medium; PA1 adding at least one emulsified binder to said medium; each of the emulsion paints having a different color. It is preferred to use galactomannoglycans as colloid (most preferably guar gum) and synthetic clays (most preferably of the smectite or hectorite types).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.