Process for the preparation of vinyl chloride polymers for paste
Abstract
Abstract A PROCESS FOR THE PREPARATION OF A VINYL CHLORIDE POLYMER FOR PASTE RESIN, WHICH COMPRISES DISPERSING IN WATER A VINYL CHLORIDE MONOMER ALONE OR A MIXTURE OF VINYL CHLORIDE WITH OTHER MONOMER OR MONOMERS WHICH ARE COPOLYMERIZABLE THEREWITH, TOGETHER WITH AT LEAST ONE OILSOLUBLE CATALYST SELECTED FROM THE GROUP CONSISTING OF DIACYL PEROXIDES, AZO COMPOUNDS, PEROXY ESTERS OF ORGANIC ACIDS AND ACETYLCYCLOHEXYLSULFONYL PEROXIDE, AND AN ANIONIC SURFACTANT OF ALKYLARYLSULFONATE TYPE, SUBJECTING THE RESULTING DISPERSION TO A HOMOGENIZATION TREATMENT, AND THEREAFTER POLYMERIZING THE SAME, ACID POLYMERIZATION BEING CARRIED OUT IN THE PRESENCE OF AT LEAST ONE HALOGENATED HYDRO-CARBON HAVING NOT LESS THAN 8 CARBON ATOMS AND A HALOGEN CONTENT OF 20-70% BY WEIGHT.
Inventors
- 👤 Eiichi Iida
- 👤 Tsunco Komatsubara
- 👤 Soichiro Takeuchi
- 👤 Etuo Matui
- 👤 Toshio Sano
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |