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US2854435A
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Process of preparing a polyethylenepolyisoolefin blend
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-10-20
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Granted: 1958-09-30
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Expires: 1975-10-20
Abstract
No abstract record available.
Inventors
- 👤 John R Briggs
- 👤 Raymond G Newberg
- 👤 Robert E Clayton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08F; C08F10/00; C08L2205/00; C08L2205/03; C08L23/18; C08L23/20; C08L23/22; C08L25/00; C08L25/02; C08L25/04; C08L25/08; Y; Y10; Y10S; Y10S206/00; Y10S206/819
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR BLENDING POLYISOBUTYLENE HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 140,000 WITH POLYETHYLENE WHICH COMPRISES HOMOGENIZING THE POLYISOBUTYLENE, REMOVING ABOUT 30% OF THE HOMOGENIZED POLYISOBUTYLENE AND REPLACING IT WITH AN EQUIVALENT AMOUNT OF POLYETHYLENE, HOMOGENIZING THE MIXTURE, REMOVING A SUFFICIENT AMOUNT OF THE RESULTING HOMOGENIZED MIXTURE AND REPLACING IT WITH AN EQUAL AMOUNT OF POLYETHYLENE SO THAT THE RESULTING MIXTURE CONTAINS ABOUT 70% POLYETHYLENE AND ABOUT 30% POLYISOBUTYLENE, AND MIXING THE RESULTING BLEND UNTIL IT IS CAPABLE OF SHRINKING AT LEAST ABOUT 6% TO 25% WHEN HEATED TO A TEMPERATURE LEVEL OF BETWEEN ABOUT 200*F. AND ABOUT 212*F.
Claim 2
Dependent Claim
101 words
A PROCESS FOR BLENDING POLYISOBUTYLENE HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 140,000 WITH POLYETHYLENE WHICH COMPRISES HOMOGENIZING THE POLYISOBUTYLENE, REMOVING ABOUT 30% OF THE HOMOGENIZED POLYISOBUTYLENE AND REPLACING IT WITH AN EQUIVALENT AMOUNT OF POLYETHYLENE, HOMOGENIZING THE MIXTURE, REMOVING A SUFFICIENT AMOUNT OF THE RESULTING HOMOGENIZED MIXTURE AND REPLACING IT WITH AN EQUAL AMOUNT OF POLYETHYLENE SO THAT THE RESULTING MIXTURE CONTAINS ABOUT 70% POLYETHYLENE AND ABOUT 30% POLYISOBUTYLENE, AND MIXING THE RESULTING BLEND UNTIL IT IS CAPABLE OF SHRINKING AT LEAST ABOUT 6% TO 25% WHEN HEATED TO A TEMPERATURE LEVEL OF BETWEEN ABOUT 200*F. AND ABOUT 212*F.
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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |