US5804675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene-alkyl acrylate copolymers and derivatives having improved melt-point temperatures
Assignee: Westlake Longview Corp
•
Filing: 1996-08-19
•
Granted: 1998-09-08
•
Expires: 2016-08-19
Abstract
Abstract A composition is disclosed which comprises a copolymer of ethylene and alkyl acrylate having improved melt-point temperature and/or improved adhesiveness to polymeric substrates. A process for making these compositions is also disclosed. In addition, an ionomer made from the copolymer and a method for making the ionomer are disclosed.
Inventors
- 👤 Jerry G. Latiolais
- 👤 J. Paul Gathright
- 👤 Nicholas R. Galante
- 👤 M. Stephen Galland
- 👤 J. Diores Gallet
- 👤 Lewis R. Compton
- 👤 George L. Baker
- 👤 James H. Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:19
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; C08F210/00; C08F210/02; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L23/06; C08L23/0853; C08L23/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31935
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
102 words
A composition comprising a copolymer of ethylene and alkyl acrylate, the copolymer having an adhesive strength to polyester at least about 20% greater than the adhesive strength of a reference polymer to polyester, wherein the copolymer contains from about 5 weight percent to about 50 weight percent alkyl acrylate based on the total weight of ethylene and alkyl acrylate in the copolymer, wherein the reference copolymer has the same amount and type of alkyl acrylate and ethylene, and wherein the reference copolymer is made by dividing the ethylene monomer and alkyl acrylate monomer equally among each reactor zone in a multi-zone reactor.
Claim 2
Dependent Claim
102 words
A composition comprising a copolymer of ethylene and alkyl acrylate, the copolymer having an adhesive strength to polyester at least about 20% greater than the adhesive strength of a reference polymer to polyester, wherein the copolymer contains from about 5 weight percent to about 50 weight percent alkyl acrylate based on the total weight of ethylene and alkyl acrylate in the copolymer, wherein the reference copolymer has the same amount and type of alkyl acrylate and ethylene, and wherein the reference copolymer is made by dividing the ethylene monomer and alkyl acrylate monomer equally among each reactor zone in a multi-zone reactor.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein the alkyl acrylate consists essentially of methyl acrylate, ethyl acrylate, butyl acrylate, or mixtures thereof.
Claim 4
Dependent Claim
21 words
The composition of claim 2 wherein the alkyl acrylate consists essentially of methyl acrylate, ethyl acrylate, butyl acrylate, or mixtures thereof.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the adhesive strength is at least 50 percent greater than the reference polymer.
Claim 6
Dependent Claim
19 words
The composition of claim 4 wherein the adhesive strength is at least 100 percent greater than the reference polymer.
Claim 7
Dependent Claim
24 words
The composition according to claim 1 wherein the copolymer exhibits a melt-point temperature at least about 6 deg F. greater than the reference copolymer.
Claim 8
Dependent Claim
19 words
The composition of claim 6 wherein the adhesive strength is at least 50 percent greater than the reference polymer.
Claim 9
Dependent Claim
19 words
The composition of claim 7 wherein the adhesive strength is at least 100 percent greater than the reference polymer.
Claim 10
Dependent Claim
98 words
The composition of claim 1 prepared by the process comprising: A) feeding overall to a multi-zone reactor a total amount by weight, A, of alkyl acrylate and a total amount by weight, E, of ethylene; B) reacting in a first reaction zone of the reactor a portion by weight, A 1 , of the alkyl acrylate and a portion by weight, E 1 , of the ethylene, such that A 1 /E 1 is at least about 10% greater than A/E; C) reacting any remaining portions of ethylene and alkyl acrylate in a subsequent reaction zone or zones.
Claim 11
Dependent Claim
19 words
The composition according to claim 9 wherein A 1 /E 1 is at least about 20% greater than A/E.
Claim 12
Dependent Claim
19 words
The composition according to claim 10 wherein A 1 /E 1 is at least about 25% greater than A/E.
Claim 13
Dependent Claim
19 words
The composition according to claim 11 wherein A 1 /E 1 is at least about 50% greater than A/E.
Claim 14
Dependent Claim
19 words
The composition according to claim 12 wherein A 1 /E 1 is at least about 100% greater than A/E.
Claim 15
Dependent Claim
16 words
The composition according to claim 9 wherein E 1 /E is between about 0.10 and 0.90.
Claim 16
Dependent Claim
16 words
The composition according to claim 9 wherein A is about 10 to about 40 weight percent.
Claim 17
Dependent Claim
16 words
The composition according to claim 15 wherein A is about 15 to about 40 weight percent.
Claim 18
Dependent Claim
14 words
The composition according to claim 9 wherein the reactor is a stirred autoclave reactor.
Claim 19
Dependent Claim
181 words
A composition comprising a copolymer of ethylene and alkyl acrylate, the copolymer having a melt-point temperature at least about 6 deg F. greater than a reference copolymer, wherein the copolymer is prepared by the method comprising: A) feeding overall to a multi-zone reactor a total amount by weight, A, of alkyl acrylate and a total amount by weight, E, of ethylene, wherein A is about 5 weight percent to about 50 weight percent of the total copolymer; B) reacting in a first reaction zone of the reactor a portion by weight, A 1 , of the alkyl acrylate and a portion by weight, E 1 , of the ethylene, such that A 1 /E 1 is at least about 10% greater than A/E; and C) reacting any remaining portions of ethylene and alkyl acrylate in a subsequent reaction zone or zones; wherein the reference copolymer has the same amount and type of alkyl acrylate and ethylene, and wherein the reference copolymer is made by dividing the ethylene monomer and alkyl acrylate monomer equally among each reactor zone in a multi-zone reactor.
Claim 20
Dependent Claim
181 words
A composition comprising a copolymer of ethylene and alkyl acrylate, the copolymer having a melt-point temperature at least about 6 deg F. greater than a reference copolymer, wherein the copolymer is prepared by the method comprising: A) feeding overall to a multi-zone reactor a total amount by weight, A, of alkyl acrylate and a total amount by weight, E, of ethylene, wherein A is about 5 weight percent to about 50 weight percent of the total copolymer; B) reacting in a first reaction zone of the reactor a portion by weight, A 1 , of the alkyl acrylate and a portion by weight, E 1 , of the ethylene, such that A 1 /E 1 is at least about 10% greater than A/E; and C) reacting any remaining portions of ethylene and alkyl acrylate in a subsequent reaction zone or zones; wherein the reference copolymer has the same amount and type of alkyl acrylate and ethylene, and wherein the reference copolymer is made by dividing the ethylene monomer and alkyl acrylate monomer equally among each reactor zone in a multi-zone reactor.
Claim 21
Dependent Claim
42 words
The composition according to claim 18 wherein the copolymer is an ethylene-methyl acrylate copolymer having an average melt-point temperature of equal to or greater than the value obtained from the formula: Temperature (deg F.)=248-3.1Y wherein Y is the weight percent methyl acrylate.
Claim 22
Dependent Claim
20 words
The composition according to claim 19 wherein the methyl acrylate content is equal to or greater than 15 weight percent.
Claim 23
Dependent Claim
41 words
The composition of claim 18 wherein the copolymer is an ethylene-butyl acrylate copolymer having an average melt-point temperature of equal to or greater than the value obtained from the formula: Temperature (deg F.)=240-2.3Z wherein Z is the weight percent butyl acrylate.
Claim 24
Dependent Claim
20 words
The composition according to claim 21 wherein the butyl acrylate content is equal to or greater than 15 weight percent.
Claim 25
Dependent Claim
19 words
The composition according to claim 18 wherein A 1 /E 1 is at least about 20% greater than A/E.
Claim 26
Dependent Claim
19 words
The composition according to claim 23 wherein A 1 /E 1 is at least about 25% greater than A/E.
Claim 27
Dependent Claim
19 words
The composition according to claim 24 wherein A 1 /E 1 is at least about 50% greater than A/E.
Claim 28
Dependent Claim
19 words
The composition according to claim 25 wherein A 1 /E 1 is at least about 100% greater than A/E.
Claim 29
Dependent Claim
16 words
The composition according to claim 26 wherein E 1 /E is between about 0.10 and 0.90.
Claim 30
Dependent Claim
16 words
The composition according to claim 18 wherein A is about 10 to about 40 weight percent.
Claim 31
Dependent Claim
16 words
The composition according to claim 28 wherein A is about 15 to about 40 weight percent.
Claim 32
Dependent Claim
14 words
The composition according to claim 18 wherein the reactor is a stirred autoclave reactor.
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) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |