Process for depositing gelable composition that includes dissolving gelable composition in liquid with agitating to disrupt gelling
US6890868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Jan 18, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K85/151
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process including: (a) selecting a composition including a polymer and a liquid, wherein the polymer exhibits lower solubility in the liquid at room temperature but exhibits greater solubility in the liquid at an elevated temperature, wherein the composition gels when the elevated temperature is lowered to a first lower temperature without agitation; (b) dissolving at the elevated temperature at least a portion of the polymer in the liquid; (c) lowering the temperature of the composition from the elevated temperature to the first lower temperature; (d) agitating the composition to disrupt any gelling, wherein the agitating commences at any time prior to, simultaneous with, or subsequent to the lowering the elevated temperature of the composition to the first lower temperature: (e) depositing a layer of the composition wherein the composition is at a second lower temperature lower than the elevated temperature; and (f) drying at least partially the layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.