Polymeric composition comprising a semi-crystalline fluorinated polymer, an acrylic polymer and a nucleating agent, and formulations and coatings obtained from these compositions
US7344781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2004 |
| Grant date | Mar 18, 2008 |
| Priority date | — |
| Expiry date | Jan 25, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31544
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This polymeric composition comprises a blend of polymers comprising:(a) a semi-crystalline fluorinated polymer,(b) an acrylic polymer, and is characterized in that it additionally comprises:(c) from 0.01 to 20% by weight, with respect to the total weight of the semi-crystalline fluorinated polymer and of the acrylic polymer, of a nucleating agent in the form of particles having a melting point greater than that of the semi-crystalline fluorinated polymer.These compositions result in formulations in the form of dry powders or of powders in suspension in water or in a latent solvent for the semi-crystalline fluorinated polymer.Applied to a substrate, these formulations give, by baking, glossy and stable coatings comprising spherulites with a size of less than 5 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.