US3211808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions of low molecular weight polyethylene and graft copolymers of polymerizable acrylic acids and polyethylene
Assignee: Dow Chemical Co
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Filing: 1961-09-05
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Granted: 1965-10-12
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Expires: 1981-09-05
Abstract
No abstract record available.
Inventors
- 👤 Lewis J Young
- 👤 Joseph E Burkholder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:18
CPC Classifications
C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/06; C08; C08F; C08F255/00; C08F255/02; C09D151/00; C09D151/06; Y; Y10; Y10S; Y10S525/00; Y10S525/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A THERMOPLASTIC COMPOSITION OF MATTER HAVING A FLOW VISCOSITY OF AT LEAST 20 POISE AND NOT GREATER THAN 11,000 POISE AS MEASURED AT A TEMPERATURE OF 225*C. AND A PRESSURE OF 700,000 DYNES/CM2, SAID COMPOSITION CONSISTING ESSENTIALLY OF AN INITIMATE BLEND OF (I) A GRAFT COPOLYMER OF (A) FROM 98 TO 75 PERCENT BY WEIGHT OF POLYETHYLENE, AND (B) FROM 2 TO 25 PERCENT BY WEIGHT OF AN UNSATURATED ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND MTHACRYLIC ACID; IN ADMIXTURE WITH (II) POLYETHYLENE HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1500 TO ABOUT 10,000, IN AMOUNTS WITHIN THE RANGE OF FROM ABOUT 25 TO 75 PERCENT BY WEIGHT OF THE SUM OF THE WEIGHT OF THE GRAFT COPOLYMER AND THE LOW MOLECULAR WEIGHT POLYETHYLENE.
Claim 2
Dependent Claim
127 words
A THERMOPLASTIC COMPOSITION OF MATTER HAVING A FLOW VISCOSITY OF AT LEAST 20 POISE AND NOT GREATER THAN 11,000 POISE AS MEASURED AT A TEMPERATURE OF 225*C. AND A PRESSURE OF 700,000 DYNES/CM2, SAID COMPOSITION CONSISTING ESSENTIALLY OF AN INITIMATE BLEND OF (I) A GRAFT COPOLYMER OF (A) FROM 98 TO 75 PERCENT BY WEIGHT OF POLYETHYLENE, AND (B) FROM 2 TO 25 PERCENT BY WEIGHT OF AN UNSATURATED ACID SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID AND MTHACRYLIC ACID; IN ADMIXTURE WITH (II) POLYETHYLENE HAVING A MOLECULAR WEIGHT OF FROM ABOUT 1500 TO ABOUT 10,000, IN AMOUNTS WITHIN THE RANGE OF FROM ABOUT 25 TO 75 PERCENT BY WEIGHT OF THE SUM OF THE WEIGHT OF THE GRAFT COPOLYMER AND THE LOW MOLECULAR WEIGHT POLYETHYLENE.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |