Aqueous dispersions based on cellulose nitrates, a process for their production and their use as quick-hardening coatings
US4772329A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1986 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Dec 17, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/921
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aqueous coating agent dispersions comprising PA0 A. from 3 to 30% by weight of cellulose nitrate, PA0 B. from 10 to 50% by weight of at least one liquid prepolymer, which is optionally emulsifiable in water even in the absence of emulsifier, which contains from 0.01 to 1.3 mols/100 g of prepolymer of polymerizable C--C double bonds, PA0 C. from 0 to 25% by weight of at least one liquid prepolymer, which is not emulsifiable in water in the absence of emulsifier, which contains from 0.01 to 1.3 mols/100 g of prepolymer of polymerizable C--C double bonds and has a maximum acid value of 25 and a maximum viscosity at 23.degree. C. of 60 Pa.s, PA0 D. from 0 to 20% by weight of an organic solvent with an evaporation number of <20, PA0 E. from 0 to 15% by weight of a plasticizer, PA0 F. from 0 to 5% by weight of a conventional emulsifier, PA0 G. from 0 to 10% by weight of further conventional additives, and PA0 H. water as the remainder the total of A-H always being 100% by weight and if B=C, the quantity of emulsifier has to be >0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.