Elastomeric thermoplastic copolyesters endowed with high rheological and mechanical properties and an improved ageing resistance
US5173528A · kind A · utility
2Cited by
11References
15Claims
0Family size
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Key dates
| Filing date | Jul 5, 1990 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Jul 5, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3437
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A rheological and mechanical properties and the ageing resistance of the elastomeric thermoplastic copolyesters are remarkably improved by the addition of a synergistic mixture of a polycarbodiimide and a quinolinic antioxidant. The copolyesters containing the above synergistic mixture find use in the extrusion technology. Said copolyesters, when they are subjected to a heat treatment at a temperature lower than 150.degree. C., increase the melt viscosity so that they can be used in the blow-molding technology.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.