US3941865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of ethylene oxide resins
Assignee: Union Carbide Corp
•
Filing: 1973-12-10
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Granted: 1976-03-02
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Expires: 1993-12-10
Abstract
Abstract The facile extrusion of ethylene oxide resins has been effected by employing water as an extrusion aid.
Inventors
- 👤 Walter A. Miller
- 👤 Richard G. Shaw
- 👤 Paul A. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:10
CPC Classifications
C; C08; C08J; C08J5/00; B; B29; B29C; B29C48/00; B29C48/022; B29C48/03; B29C48/05; B29C48/06; B29C48/09; B29C48/10; B29C48/07; B29C48/08; B29K; B29K2023/00; B29K2071/00; B29K2995/00; B29K2995/0037; B29K2995/0072; B29L; B29L2007/00; B29L2023/00; C08J2371/00; C08J2371/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
Method of extruding normally solid ethylene oxide resin which comprises extruding a composition comprising normally solid ethylene oxide resin containing about 4 to about 200 parts by weight of water per 100 parts by weight of ethylene oxide resin such that the melt flow of said composition lies in the range of about 0.05 to about 20 decigrams per minute when measured in accordance with ASTM D 1238-57 T modified in that measurements were made at 85°C. and 43.25 psi.
Claim 2
Dependent Claim
80 words
Method of extruding normally solid ethylene oxide resin which comprises extruding a composition comprising normally solid ethylene oxide resin containing about 4 to about 200 parts by weight of water per 100 parts by weight of ethylene oxide resin such that the melt flow of said composition lies in the range of about 0.05 to about 20 decigrams per minute when measured in accordance with ASTM D 1238-57 T modified in that measurements were made at 85°C. and 43.25 psi.
Claim 3
Dependent Claim
16 words
Method claimed in claim 1 wherein the normally solid resin is a homopolymer of ethylene oxide.
Claim 4
Dependent Claim
19 words
Method claimed in claim 1 wherein the normally solid resin contains about 10 to about 20 parts of water.
Claim 5
Dependent Claim
24 words
Method claimed in claim 1 wherein the melt flow of the composition lies in the range of about 0.1 to 10 decigrams per minute.
Claim 6
Dependent Claim
17 words
Method claimed in claim 2 wherein the composition is used to prepare blown film by tubular extrusion.
Claim 7
Dependent Claim
21 words
Method claimed in claim 5 wherein the blown film contains a maximum of about 2% by weight of water at windup.
Claim 8
Dependent Claim
14 words
Method claimed in claim 2 wherein the composition is used to prepare a monofilament.
Claim 9
Dependent Claim
13 words
Method claimed in claim 2 wherein the composition is used to prepare tubing.
References Cited (Backward Citations)
CA722109A
Cited
US2528200A
Cited
US3066356A
Cited
US3177276A
Cited
US3425979A
Cited
US3607812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-02 | 1979-09-01 | 1980-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-02 | 1983-09-01 | 1984-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-02 | 1987-09-01 | 1988-03-02 | $7700.00 | Window Closed / Lapsed |