US3969304A
Expired / Lapsed
US
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Ethylene polymer films
Assignee: Millennium Petrochemicals Inc
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Filing: 1974-11-27
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Granted: 1976-07-13
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Expires: 1994-11-27
Abstract
Abstract The properties of an ethylene polymer film is improved by replacing a portion of the anti-blocking agent therein with N,N'-ethylene-bis-erucamide.
Inventors
- 👤 Donald W. Pugh
- 👤 James W. Biggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:05
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/20; B; B29; B29C; B29C33/00; B29C33/56; B29C33/60; C08K13/00; C08K13/02; C08K3/00; C08K3/34; C08K3/36
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
61 words
A composition comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N'-ethylene bis erucamide; (c) about 0.01-0.5 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer.
Claim 2
Dependent Claim
61 words
A composition comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N'-ethylene bis erucamide; (c) about 0.01-0.5 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer.
Claim 3
Dependent Claim
34 words
The composition of claim 1 wherein the amount of slip agent is 0.02-0.1%, the amount of anti-block agent is about 0.03-0.25 weight percent, and the amount of the N,N'-ethylene bis erucamide is about 0.03-0.25%.
Claim 4
Dependent Claim
30 words
The composition of claim 2 wherein the ethylene polymer is polyethylene having a melt index in the range of about 0.2-12 and a density in the range of about 0.917-0.937.
Claim 5
Dependent Claim
32 words
The composition of claim 1 wherein the amount of slip agent is about 0.01-0.15%, the amount of anti-block agent is about 0.01-0.30% and the amount of N,N'-ethylene bis erucamide is about 0.01-0.30%.
Claim 6
Dependent Claim
30 words
The composition of claim 4 wherein the amount of slip agent is 0.02-0.1%, the amount of anti-block agent is about 0.02-0.2% and the amount of N,N'-ethylene bis erucamide is 0.02-0.2%.
Claim 7
Dependent Claim
30 words
The composition of claim 5 wherein the ethylene polymer is polyethylene having a melt index in the range of about 1-8 and a density in the range of about 0.918-0.927.
Claim 8
Dependent Claim
18 words
The composition of claim 1 wherein the slip agent is about erucamide and the anti-block agent is silica.
Claim 9
Dependent Claim
64 words
A self-supporting plastic film comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N'-ethylene bis erucamide; (c) about 0.01-0.5 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent of anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer.
Claim 10
Dependent Claim
64 words
A self-supporting plastic film comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N'-ethylene bis erucamide; (c) about 0.01-0.5 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent of anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer.
Claim 11
Dependent Claim
40 words
The self-supporting plastic film of claim 8 wherein the amount of slip agent is about 0.02-0.1 weight percent, the amount of anti-block agent is about 0.03-0.25 weight percent, and the amount of the N,N'-ethylene bis erucamide is 0.03-0.25 weight percent.
Claim 12
Dependent Claim
33 words
The self-supporting plastic film of claim 8 wherein the amount of slip agent is about 0.01-0.15%, the amount of anti-block agent is 0.01-0.3% and the amount of N,N'-ethylene bis erucamide is about 0.01-0.3%.
Claim 13
Dependent Claim
31 words
The self-supporting plastic film of claim 10 wherein the amount of slip agent is 0.02-0.1%, the amount of anti-block agent is 0.02-0.2% and the amount of N,N'-ethylene bis eurcamide is 0.02-0.2%.
Claim 14
Dependent Claim
33 words
The self-supporting plastic film of claim 11 wherein the ethylene polymer is polyethylene having a melt index in the range of about 1.0-8.0 and having a density in the range of about 0.918-0.927.
Claim 15
Dependent Claim
19 words
The self-supporting plastic film of claim 12 wherein the slip agent is erucamide and the anti-block agent is silica.
Claim 16
Dependent Claim
85 words
A process for forming a self-supporting ethylene polymer film which comprises forming a homogeneous mixture comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N' -ethylene bis erucamide; (c) about 0.01-0.05 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent of anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer; and thereafter melt extruding the homogeneous mixture into film.
Claim 17
Dependent Claim
85 words
A process for forming a self-supporting ethylene polymer film which comprises forming a homogeneous mixture comprising (a) a film grade ethylene polymer; (b) about 0.01-0.5 weight percent of N,N' -ethylene bis erucamide; (c) about 0.01-0.05 weight percent of slip agent which is different than said bis erucamide; and (d) about 0.01-0.5 weight percent of anti-block agent which is different than said bis erucamide and slip agent; said percentages based on the weight of the ethylene polymer; and thereafter melt extruding the homogeneous mixture into film.
Claim 18
Dependent Claim
41 words
The process of claim 14 wherein said ethylene polymer is polyethylene having a melt index in the range of about 1.0-8.0 and a density in the range of about 0.918-0.927, said slip agent is erucamide, and said anti-block agent is silica.
Claim 19
Dependent Claim
25 words
The process of claim 14 wherein the homogeneous mixture contains about 0.01-0.15% slip agent, about 0.01-0.30% anti-block agent and about 0.01-0.30% N,N' -ethylene bis erucamide.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |