US3336409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of alkylated styrene polymers
Assignee: Atlantic Richfield Co
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Filing: 1966-07-15
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Granted: 1967-08-15
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Expires: 1986-07-15
Abstract
No abstract record available.
Inventors
- 👤 Donald H Russell
- 👤 Jr Benjamin C Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:02
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2/68; C07C2/86; C07C2/861; C07C2527/00; C07C2527/06; C07C2527/125; C07C2527/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR THE SIMULTANEOUS POLYMERIZATION AND ALKYLATION OF STYRENE MONOMERS TO PRODUCE NORMALLY LIQUID LOW MOLECULAR WEIGHT ALKYLATED STYRENE POLYMERS WHEREIN THE OLYMER CHAIN CONSISTS SOLELY OF STYRENE MONOMERIC UNITS WITH THE ALKYLATING AGENT FORMING A SUBSTITUENT ON THE BENZENE RING OF THE STYRENE MONOMERIC UNIT WHICH COMPRISES CONTACTING A STYRENE MONOMER AND AN ALKYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF STRAIGHT CHAIN C4 TO C17 ALPHA MONOOLEFINS AND STRAIGHT CHAIN C4 TO C17 MONOCHLOROPARAFFINS IN A C6 TO C12 PARAFFINIC HYDROCARBON SOLVENT WITH AN ALUMINUM CHLORIDE CATALYST AT A TEMPERATURE IN THE RANGE OF FROM 50*F. TO 200*F. FOR A TIME IN THE RANGE OF FROM 5 MINUTES TO 6 HOURS, SAID MONOMER TO SAID ALKYLATING AGENT MOLE RATIO BEING IN THE RANGE OF FROM 1:2 TO 10:1, AND THEREAFTER RECOVERING THE ALKYLATED POLYMER.
Claim 2
Dependent Claim
137 words
A PROCESS FOR THE SIMULTANEOUS POLYMERIZATION AND ALKYLATION OF STYRENE MONOMERS TO PRODUCE NORMALLY LIQUID LOW MOLECULAR WEIGHT ALKYLATED STYRENE POLYMERS WHEREIN THE OLYMER CHAIN CONSISTS SOLELY OF STYRENE MONOMERIC UNITS WITH THE ALKYLATING AGENT FORMING A SUBSTITUENT ON THE BENZENE RING OF THE STYRENE MONOMERIC UNIT WHICH COMPRISES CONTACTING A STYRENE MONOMER AND AN ALKYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF STRAIGHT CHAIN C4 TO C17 ALPHA MONOOLEFINS AND STRAIGHT CHAIN C4 TO C17 MONOCHLOROPARAFFINS IN A C6 TO C12 PARAFFINIC HYDROCARBON SOLVENT WITH AN ALUMINUM CHLORIDE CATALYST AT A TEMPERATURE IN THE RANGE OF FROM 50*F. TO 200*F. FOR A TIME IN THE RANGE OF FROM 5 MINUTES TO 6 HOURS, SAID MONOMER TO SAID ALKYLATING AGENT MOLE RATIO BEING IN THE RANGE OF FROM 1:2 TO 10:1, AND THEREAFTER RECOVERING THE ALKYLATED POLYMER.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |