Solvent system for electrostatic shade band deposition process
US4139652A · kind A · utility
1Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1977 |
| Grant date | Feb 13, 1979 |
| Priority date | — |
| Expiry date | Nov 30, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P5/2016
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrostatic spray process for the formation of a shade band on a polymeric innerlayer for laminated safety glass is disclosed. The improvement comprises using a solvent system of N-lower alkyl-pyrrolidone and tetrahydrofuran. This solvent system combines high dye solubility for process efficiency with proper volatility for optimum aesthetic quality in the finished product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.