Copolyester compositions containing carbon black
US5643991A · kind A · utility
22Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L53/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a blend comprising: PA1 (a) one or more substantially amorphous copolyester resins having a degree of crystallinity of less than 20 percent; PA1 (b) from about 5 to about 25 weight percent carbon black; and PA1 (c) from about 7 to about 30 weight percent of an impact modifier, PA1 wherein the total of the weight percentages of (a), (b), and (c) equal 100 percent. This invention is advantageous in that it provides the advantages of good electroconductivity, lack of brittleness, ability to thermoform into desired shapes, good impact strength, good sealing characteristics and acceptable environmental image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.