US3049522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of bead polymers in presence of catalyst containing dicyclopentadienyliron
Assignee: Airco Inc
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Filing: 1957-05-10
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Granted: 1962-08-14
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Expires: 1977-05-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur I Lowell
- 👤 Joseph J Latimer
- 👤 Alio J Buselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F4/28; C08F4/32; Y; Y10; Y10S; Y10S260/00; Y10S260/25; Y10S526/00; Y10S526/91; Y10S526/915
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
A PROCESS FOR PREPARING A POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER IN BEAD FROM WHICH COMPRISES ADMIXING AN ETHYLENICALLY UNSATURATED MONOMER, WATER IN AN AMOUNT OF 30-800 PARTS PER 100 PARTS OF MONOMEER, A DISPERSING AGENT IN AMOUNT OF 0.005-0.2% BY WEIGHT OF MONOMER AND WATER, AND A CATALYST SYSTEM INCLUING 0.005-01 PARTS OF DICYCLOPENTADIENYLIRON PER 100 PARTS OF MONOMER, 0.01-1.0 PART OF AN ORGANIC PEROXIDE PER 100 PARTS OF MONOMER, AND 0.005-1.0 PART OF A WATER-SOLBUBLE REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM FORMALDEHYDE SYLFOXYLATE, SODIUM SALT OF P-TOLUENE SULFINIC ACID, CHLOROBENZENE SULFINIC ACID, ZINC FORMALDHYDE SULFOXYLATE, SODIUM BISULFINTE AND SODIUM THIOSULFATE PER 100 PARTS OF MONOMER AND AGITATING THE RESULTING MIXTURE TO POLYMERIZE THE MONOMER, MAINTAINING THE POLYMERIZATION TEMPERATURE BELOW 50*C. DURING THE PROGESS OF THE POLYMERIZATION IN THE FORMATION OF POLYMER BEADS, AND RECOVERING THE RESULTING BEADS OF POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER.
Claim 2
Dependent Claim
145 words
A PROCESS FOR PREPARING A POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER IN BEAD FROM WHICH COMPRISES ADMIXING AN ETHYLENICALLY UNSATURATED MONOMER, WATER IN AN AMOUNT OF 30-800 PARTS PER 100 PARTS OF MONOMEER, A DISPERSING AGENT IN AMOUNT OF 0.005-0.2% BY WEIGHT OF MONOMER AND WATER, AND A CATALYST SYSTEM INCLUING 0.005-01 PARTS OF DICYCLOPENTADIENYLIRON PER 100 PARTS OF MONOMER, 0.01-1.0 PART OF AN ORGANIC PEROXIDE PER 100 PARTS OF MONOMER, AND 0.005-1.0 PART OF A WATER-SOLBUBLE REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM FORMALDEHYDE SYLFOXYLATE, SODIUM SALT OF P-TOLUENE SULFINIC ACID, CHLOROBENZENE SULFINIC ACID, ZINC FORMALDHYDE SULFOXYLATE, SODIUM BISULFINTE AND SODIUM THIOSULFATE PER 100 PARTS OF MONOMER AND AGITATING THE RESULTING MIXTURE TO POLYMERIZE THE MONOMER, MAINTAINING THE POLYMERIZATION TEMPERATURE BELOW 50*C. DURING THE PROGESS OF THE POLYMERIZATION IN THE FORMATION OF POLYMER BEADS, AND RECOVERING THE RESULTING BEADS OF POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER.
Claim 3
Dependent Claim
96 words
A PROCESS FOR PREPARING POLYVINYL ACETATE IN BEAD FORM WHICH COMPRISES ADMIXING VINYL ACETATE, WATER, A DISPERSING AGENT AND A CATALYST SYSTEM INCLUDING DICYCLOPENTADIENYLIRON AS A CATALYST PROMOTER, AN ORGANIC PEROXIDE, AND A WATER-SOLUBLE REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM FORMALDEHYDE SULFOXYLATE, SODIUM SALT OF P-TOLUENE SULFINIC ACID, CHLOROBENZENE SULFINIC ACID ZINC FORMALDEHYDE SULFOXYLATE, SODIUM BISULFITE AND SODIUM THIOSULFATE, AGITATING THE RESULTING MIXTURE TO POLYMERIZE VINYL ACETATE, MAINTAINING THE POLYMERIZATION TEMPERATURE BELOW 50*C. DURING THE PROGRESS OF THE POLYMERIZATION IN THE FORMATION OF POLYMER BEADS AND RECOVERING THE RESULTING BEADS OF POLYVINYL ACETATE.
Claim 4
Dependent Claim
96 words
A PROCESS FOR PREPARING POLYVINYL ACETATE IN BEAD FORM WHICH COMPRISES ADMIXING VINYL ACETATE, WATER, A DISPERSING AGENT AND A CATALYST SYSTEM INCLUDING DICYCLOPENTADIENYLIRON AS A CATALYST PROMOTER, AN ORGANIC PEROXIDE, AND A WATER-SOLUBLE REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM FORMALDEHYDE SULFOXYLATE, SODIUM SALT OF P-TOLUENE SULFINIC ACID, CHLOROBENZENE SULFINIC ACID ZINC FORMALDEHYDE SULFOXYLATE, SODIUM BISULFITE AND SODIUM THIOSULFATE, AGITATING THE RESULTING MIXTURE TO POLYMERIZE VINYL ACETATE, MAINTAINING THE POLYMERIZATION TEMPERATURE BELOW 50*C. DURING THE PROGRESS OF THE POLYMERIZATION IN THE FORMATION OF POLYMER BEADS AND RECOVERING THE RESULTING BEADS OF POLYVINYL ACETATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |