Heat-treated product of acrylonitrile copolymer and process for the preparation thereof
Abstract
Abstract PRODUCT HAVING IMPROVED PHYSICAL PROPERTIES WHICH IS TREATED AT TEMPERATURES NOT LOWER THAN 50*C. OF A NOVEL COPOLYMER WHICH EXHIBITS IMPROVED CYCLIC STURCTURE-FORMING ABILITY, CONSISTING OF; (I) ACRYLONITTRILE (II) 0.05-20 MOL PERCENT TO THE ACRYLONITRILE OF A HYDROXYMETHYLACRYLIC COMPOUND OF THE FORMULA 1 BELOW: H2C=C(-X)-CH(-OH)-R (WHEREIN X STANDS FOR A RADICAL SELECTED FROM THE GROUP CONSISTING OF CYANO, CARBOXLATE RADICALS; AND R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN, ALKYL RADICALS OF NOT OVER 12 CARBONS, ARYL RADICALS OF NOT OVER 10 CARBONS, CYCLOALKY RADICALS OF NOT OVER 12 CARBONS, AND ARYLALKY RADICALS OF NOT OVER 12 CARBONS), AND (III) 0-15 MOL PERCENT TO THE ACRYLONITRILE OF OTHER COPOLYMERIZABLE MONOMER OR MONOMERS: AND ALSO TO THE PROCESSES FOR PREPARATION OF SUCH HEATTREATED PRODUCT.
Inventors
- 👤 Ken-Ichi Morita
- 👤 Toshio Mizushima
- 👤 Hideji Kitagawa
- 👤 Hiroshi Sakai
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |