Shaped articles from polyester and cellulose ester compositions
US4770931A · kind A · utility
50Cited by
18References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | May 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed are shaped articles comprising a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, the microbeads of cellulose acetate being poresent in an amount of about 10-30% by weight based on the weight of said polyester, said void space occupying about 2-50% by volume of said shaped article. Such articles have excellent physical properties, especially optical properties, and are useful in such applications as paper substitutes, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.