US3859385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emulsifiable polyethylene compositions prepared from thermally degraded low molecular weight polyethylene and crotonic acid
Assignee: Eastman Kodak Co
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Filing: 1973-07-20
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Granted: 1975-01-07
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Expires: 1993-07-20
Abstract
Abstract Emulsifiable low molecular weight modified polyethylene compositions are disclosed as well as processes for their preparation. The modified polyethylenes are prepared by reacting low molecular weight polyethylene with crotonic acid in the presence of a peroxide catalyst to produce an emulsifiable modified polyethylene wax. These emulsifiable polyethylene waxes can be used to form aqueous emulsions for use as textile treating agents or floor polishes.
Inventors
- 👤 Kenneth R Mainord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:28
CPC Classifications
C; C09; C09G; C09G1/00; C09G1/04; C08; C08F; C08F255/00; C08F255/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
40 words
AN EMULSIFIABLE POLYETHYLENE WAX HAVING AN ACID NUMBER OF AT LEAST 6 PREPARED BY REACTING A THERMALLY DEGRADED POLYETHYLENE HAVING A MELT VISCOSITY OF 225 TO 15,000 CENTIPOISE AT 125*C. WITH CROTONIC ACID IN THE PRESENCE OF AN ORGANIC PEROXIDE,
Claim 2
Dependent Claim
40 words
AN EMULSIFIABLE POLYETHYLENE WAX HAVING AN ACID NUMBER OF AT LEAST 6 PREPARED BY REACTING A THERMALLY DEGRADED POLYETHYLENE HAVING A MELT VISCOSITY OF 225 TO 15,000 CENTIPOISE AT 125*C. WITH CROTONIC ACID IN THE PRESENCE OF AN ORGANIC PEROXIDE,
Claim 3
Dependent Claim
16 words
An emulsifiable polyethylene wax according to claim 1 wherein said acid number is 7 to 55.
Claim 4
Dependent Claim
21 words
An emulsifiable polyethylene wax according to claim 1 wherein said polyethylene has a density of from about 0.910 to about 0.980.
Claim 5
Dependent Claim
26 words
An emulsifiable polyethylene wax according to claim 3 wherein said peroxide is a member of the group consisting of ditertiary butyl peroxide, dicumyl peroxide or t-butylperoxypivalate.
Claim 6
Dependent Claim
28 words
An emulsifiable polyethylene wax according to claim 4 wherein the reaction of said polyethylene and said crotonic acid is carried out at a temperature of 120*C. to 300*C.
Claim 7
Dependent Claim
23 words
An emulsifiable polyethylene wax according to claim 5 wherein said polyethylene has a melt viscosity of from 225 to 10,000 centipoise at 125*C.
Claim 8
Dependent Claim
28 words
An emulsifiable polyethylene wax according to claim 6 wherein the reaction of said polyethylene and said crotonic acid is carried out at a temperature of 150* to 180*C.
Claim 9
Dependent Claim
16 words
An emulsifiable polyethylene wax according to claim 7 wherein said acid number is 20 to 40.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |