Colored polyester thermoplastic materials comprised of poly(oxyalkylenated) compounds as colorants and specific surfactants as diluents
US5973064A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jul 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to colored polyester thermoplastics comprised of polymeric colorants having poly(oxyalkylene) moieties and/or anionic dye/quatenary ammonium substantially inorganic salt-free colorant complexes mixed with diluents selected from the group consisting essentially of sorbitan (C.sub.8 -C.sub.22) monoesters, ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters, mixtures thereof of sorbitan (C.sub.8 -C.sub.22) monoesters and ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters, ethoxylated nonyl-phenol ethers, ethoxylated dodecylphenol ethers, mixtures thereof of said ethoxylated nonyl-phenol ethers and ethoxylated dodecylphenol ethers, and mixtures of (i) sorbitan (C.sub.8 -C.sub.22) monoesters or ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters and (ii) ethoxylated nonyl-phenol ethers or ethoxylated dodecylphenol ethers. Such diluents facilitate the introduction of the preferred polymeric colorants within feedstock polyester during the extrusion or injection molding process and provide a significant improvement over traditional polyester article colorants. The inventive colored polyester thermoplastic may be molded into any shape or form; however, plastics are c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.