US4853427A
Expired / Lapsed
US
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Composition and method to process polymers including ultrahigh molecular weight polyethylene
Assignee: Honeywell International Inc
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Filing: 1986-09-19
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Granted: 1989-08-01
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Expires: 2006-09-19
Abstract
Abstract The present invention is a composition and method to process an ultrahigh molecular weight polymer, preferably a vinylic polymer, from about 0.1 to about 25 percent by weight based on the weight of the polymer of a material containing more than one acid group, and from about 0.01 to about 2.5 percent by weight based on the weight of the polymer of a polyfunctional Lewis base.
Inventors
- 👤 Joris F. Herten
- 👤 Bernard D. Louies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:28
CPC Classifications
C; C08; C08L; C08L55/00; C08L55/02; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L51/00; C08L51/06; C08F; C08F110/00; C08F110/02; C08F210/00; C08F210/02; C08L2205/00; C08L2205/02; C08L2205/03; C08L2205/06; C08L2207/00; C08L2207/06; C08L2207/068; C08L23/08; C08L23/0846; C08L23/0853; C08L23/0869; C08L23/26; C08L23/30
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
A composition comprising: (a) an ultrahigh molecular weight vinylic polymer having a weight average molecular weight of at least 1,000,000, (b) from about 0.1 to about 25 percent by weight based on the weight of the vinylic polymer of a second polymeric material containing more than one acid group, and having a weight average molecular weight of less than 10,000, and (c) from about 0.01 to about 2.5 percent by weight, based on the weight of the vinylic polymer, of a carboxylic acid salt.
Claim 2
Dependent Claim
84 words
A composition comprising: (a) an ultrahigh molecular weight vinylic polymer having a weight average molecular weight of at least 1,000,000, (b) from about 0.1 to about 25 percent by weight based on the weight of the vinylic polymer of a second polymeric material containing more than one acid group, and having a weight average molecular weight of less than 10,000, and (c) from about 0.01 to about 2.5 percent by weight, based on the weight of the vinylic polymer, of a carboxylic acid salt.
Claim 3
Dependent Claim
39 words
The composition of claim 1 wherein the second polymeric material is selected from the group consisting of copolymers of alpha-olefins and an alpha, beta-ethylenically unsaturated carboxylic acid, and has a number average molecular weight of from 500 to 10,000.
Claim 4
Dependent Claim
84 words
A composition comprising: (a) ultrahigh molecular weight polyethylene having a weight average molecular weight of at least 1,000,000, (b) from about 0.1 to about 25 percent by weight based on the weight of the ultrahigh molecular polyethylene of a second polymeric material containing more than one acid group, and having a weight average molecular weight of less than 10,000 and (c) from about 0.01 to about 2.5 percent by weight, based on the weight of the ultrahigh molecular polyethylene, of a carboxylic acid salt.
Claim 5
Dependent Claim
84 words
A composition comprising: (a) ultrahigh molecular weight polyethylene having a weight average molecular weight of at least 1,000,000, (b) from about 0.1 to about 25 percent by weight based on the weight of the ultrahigh molecular polyethylene of a second polymeric material containing more than one acid group, and having a weight average molecular weight of less than 10,000 and (c) from about 0.01 to about 2.5 percent by weight, based on the weight of the ultrahigh molecular polyethylene, of a carboxylic acid salt.
Claim 6
Dependent Claim
21 words
The composition as recited in claim 3 wherein carboxylic acid salt has a lower molecular weight than the second polymeric material.
Claim 7
Dependent Claim
24 words
The composition of claim 3 wherein the ultrahigh molecular weight polyethylene has a weight average molecular weight of from about 1,000,000 to about 5,000,000.
Claim 8
Dependent Claim
35 words
The composition of claim 4 wherein the second polymeric material is a copolymer of an alpha-olefin and an alpha, beta-ethylenically unsaturated carboxylic acid, and has a number average molecular weight of from 500 to 10,000.
Claim 9
Dependent Claim
21 words
The composition of claim 6 wherein the second polymeric material has a number average molecular weight of from 500 to 5,000.
Claim 10
Dependent Claim
25 words
The composition as recited in claim 6 wherein the second polymeric material has a Brookfield viscosity at 150° C. of from 150 to 800 centipoise.
Claim 11
Dependent Claim
17 words
The composition of claim 3 wherein the second polymeric material contains at least two carboxylic acid groups.
Claim 12
Dependent Claim
27 words
The composition of claim 3 wherein the carboxylic acid salt is selected from the group consisting of Group II and III metal salts and cerium (II) salts.
Claim 13
Dependent Claim
18 words
The composition of claim 3 wherein there is from 0.1 to 10 percent of the second polymeric material.
Claim 14
Dependent Claim
61 words
The composition of claim 3 wherein the ultrahigh molecular weight polyethylene has a weight average molecular weight of from about 1,000,000 to about 5,000,000, the second polymeric material is ethylene acrylic acid having a number average molecular weight of from 500 to 10,000, and the carboxylic acid salt is selected from the group of zinc stearate, aluminum stearate and calcium stearate.
Claim 15
Dependent Claim
29 words
The composition of claim 12 wherein the ethylene acrylic acid has a number average molecular weight from 1,000 to 5,000 and then acid number from about 40 to 120.
Claim 16
Dependent Claim
11 words
The composition of claim 13 wherein the stearate is zinc stearate.
Claim 17
Dependent Claim
11 words
The composition of claim 14 wherein the stearate is aluminum stearate.
Claim 18
Dependent Claim
12 words
The composition of claim 3 in the form of a molded article.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |