US3356754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of liquid polymers of styrene and butadiene
Assignee: Phillips Petroleum Co
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Filing: 1964-10-05
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Granted: 1967-12-05
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Clinton F Wofford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:44
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; B01J31/16; B01J31/18; B01J31/1805; B01J31/22; B01J31/2204; C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C08; C08F; C08F36/00; C08F36/02; C08F36/04; B01J2231/00; B01J2231/10; B01J2231/12; B01J2531/00; B01J2531/10; B01J2531/11; B01J2531/12; B01J2531/13; B01J2531/14; B01J2531/15; B01J31/0201; B01J31/0211; B01J31/0212; B01J31/0234; B01J31/0235; B01J31/0252; B01J31/04; C07C2531/00; C07C2531/02; C07C2531/06; C07C2531/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR PREPARING LIQUID CONJUGATED DIENE POLYMERS WHICH COMPRISES CONTACTING A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) AT LEAST ONE CONJUGATED DIENE AND (2) A MIXTURE OF A CONJUGATED DIENE AND A VINYL-SUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, WITH A CATALYST WHICH FORMS ON MIXING MATERIALS COMPRISING (A) AN ORGANOLITHIUM COMPOUND HAVING THE FORMULA R(LI)X WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP COMPRISING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE, AND (B) AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
Claim 2
Dependent Claim
111 words
A PROCESS FOR PREPARING LIQUID CONJUGATED DIENE POLYMERS WHICH COMPRISES CONTACTING A MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF (1) AT LEAST ONE CONJUGATED DIENE AND (2) A MIXTURE OF A CONJUGATED DIENE AND A VINYL-SUBSTITUTED AROMATIC HYDROCARBON IN WHICH SAID VINYL GROUP IS ATTACHED TO A NUCLEAR CARBON ATOM, WITH A CATALYST WHICH FORMS ON MIXING MATERIALS COMPRISING (A) AN ORGANOLITHIUM COMPOUND HAVING THE FORMULA R(LI)X WHEREIN R IS A HYDROCARBON RADICAL SELECTED FROM THE GROUP COMPRISING OF ALIPHATIC, CYCLOALIPHATIC AND AROMATIC RADICALS AND X IS AN INTEGER FROM 1 TO 4, INCLUSIVE, AND (B) AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FOLLOWING FORMULAS:
References Cited (Backward Citations)
US3294768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |