Polyesters having improved whiteness
US4745174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Apr 23, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3437
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to novel fiber forming polyester compositions that exhibit improved whiteness by incorporating derivatives of dibenzoisoquinolinediones of the formula ##STR1## wherein R is hydrogen, cycloalkyl, allyl, alkyl, aralkyl, alkoxyalkyl or cycloalkylalkylene; PA0 R.sub.1 is hydrogen, halogen, alkyl, alkoxy, aryloxy, alkylthio or arylthio; PA0 R.sub.2 is hydrogen, halogen, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, carbalkoxy, carbaryloxy, carbaralkyloxy, carboxy, sulfamoyl, alkylsulfamoyl, dialkylsulfamoyl, alkylarylsulfamoyl, cycloalkylsulfamoyl, arylsulfamoyl, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, alkylarylcarbamoyl, cycloalkylcarbamoyl, arylcarbamoyl, 2-pyrrolidono, acylamido or N-alkylacylamido; PA0 R.sub.3 is one or more groups selected from the group consisting of hydrogen, halogen, alkyl, and alkoxy; and PA0 x is an integer of 1 to 5; wherein one or more alkyl, alkoxy, aryl, aryloxy, alkylthio, arylthio or aralkyl residues may contain one or more reactive groups selected from the group consisting of carboxy, carbalkoxy, carbaryloxy, N-alkyl-carbamoyloxy, carbamoyloxy, acyloxy, chlorocarbonyl, hydroxyl, cycloalkylcarbonyloxy, N-arylcarbamoyloxy,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.