US4608419A
Expired / Lapsed
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Cyclic iminoether modified copolymers as improved adhesives
Assignee: Dow Chemical Co
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Filing: 1985-03-18
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Granted: 1986-08-26
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Expires: 2005-03-18
Abstract
Abstract A modified copolymer composition comprising a polymerizable olefin and an α,β-ethylenically unsaturated carboxylic acid wherein at least a portion of the carboxyl groups have been converted to an ester/amide derivative by contact with a cyclic iminoether compound, e.g. 2-ethyl-2-oxazoline. A process for preparing the modified copolymer and a laminate structure where at least one of the plurality of layers is the modified copolymer.
Inventors
- 👤 Linneaus C. Dorman
- 👤 Victor E. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:31
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
77 words
A copolymer adhesive composition, comprising (i) a polymerizable olefin and (ii) an α,β-ethylenically unsaturated carboxylic acid, wherein at least a portion of the carboxyl groups present on said (ii) are converted to an ester/amide derivative by reacting said carboxyl groups with a cyclic iminoether compound characterized by the structural formula: ##STR5## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3, whereby said copolymer adhesive composition is not crosslinked.
Claim 2
Dependent Claim
77 words
A copolymer adhesive composition, comprising (i) a polymerizable olefin and (ii) an α,β-ethylenically unsaturated carboxylic acid, wherein at least a portion of the carboxyl groups present on said (ii) are converted to an ester/amide derivative by reacting said carboxyl groups with a cyclic iminoether compound characterized by the structural formula: ##STR5## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3, whereby said copolymer adhesive composition is not crosslinked.
Claim 3
Dependent Claim
14 words
The copolymer as recited in claim 1 wherein the cyclic iminoether compound is 2-oxazoline.
Claim 4
Dependent Claim
13 words
The copolymer as recited in claim 2 wherein the 2-oxazoline compound is 2-ethyl-2-oxazoline.
Claim 5
Dependent Claim
13 words
The copolymer as recited in claim 1 wherein the polymerizable olefin is ethylene.
Claim 6
Dependent Claim
16 words
The copolymer as recited in claim 1 wherein the α,β-ethylenically unsaturated carboxylic acid is acrylic acid.
Claim 7
Dependent Claim
91 words
A process for preparing a copolymer adhesive comprising the steps of (a) contacting a copolymer comprising (i) a polymerizable olefin, and (ii) an α,β-ethylenically unsaturated carboxylic acid with a cyclic iminoether compound characterized by the structural formula: ##STR6## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3; and (b) treating the resultant admixture under conditions sufficient to convert at least a portion of the carboxyl groups present on said (ii) to an ester/amide derivative whereby said copolymer adhesive composition is not crosslinked.
Claim 8
Dependent Claim
91 words
A process for preparing a copolymer adhesive comprising the steps of (a) contacting a copolymer comprising (i) a polymerizable olefin, and (ii) an α,β-ethylenically unsaturated carboxylic acid with a cyclic iminoether compound characterized by the structural formula: ##STR6## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3; and (b) treating the resultant admixture under conditions sufficient to convert at least a portion of the carboxyl groups present on said (ii) to an ester/amide derivative whereby said copolymer adhesive composition is not crosslinked.
Claim 9
Dependent Claim
23 words
The process as recited in claim 6 which includes the additional steps of recovering the copolymer so made; and drying the modified copolymer.
Claim 10
Dependent Claim
16 words
The process as recited in claim 6 wherein the copolymer in step (a) is ethylene/acrylic acid.
Claim 11
Dependent Claim
27 words
The process as recited in claim 6 wherein the treating step (b) is carried out to convert essentially all of the carboxyl groups to an ester/amide derivative.
Claim 12
Dependent Claim
48 words
The process as recited in claim 9 wherein the treating step (b) is carried out at a temperature within the range of from about 100° to about 128° C. when at 1.0 atmospheres and for a time within the range of from about 1 to about 24 hours.
Claim 13
Dependent Claim
92 words
A laminate structure formed from at least two dissimilar layers, wherein at least one layer is a copolymer composition comprising (i) a polymerizable olefin and (ii) an α,β-ethylenically unsaturated carboxylic acid; and wherein at least a portion of the carboxyl groups present on said (ii) is converted to an ester/amide derivative by reacting said carboxyl groups with a cyclic iminoether compound characterized by the structural formula: ##STR7## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3, whereby said copolymer composition is not crosslinked.
Claim 14
Dependent Claim
92 words
A laminate structure formed from at least two dissimilar layers, wherein at least one layer is a copolymer composition comprising (i) a polymerizable olefin and (ii) an α,β-ethylenically unsaturated carboxylic acid; and wherein at least a portion of the carboxyl groups present on said (ii) is converted to an ester/amide derivative by reacting said carboxyl groups with a cyclic iminoether compound characterized by the structural formula: ##STR7## wherein the R groups are independently an alkyl, arylalkyl, aryl or H and n is 2 or 3, whereby said copolymer composition is not crosslinked.
Claim 15
Dependent Claim
24 words
The laminate structure as recited in claim 11 wherein three layers are employed, the middle layer being an adhesive consisting of said copolymer composition.
Claim 16
Dependent Claim
28 words
The laminate structure as recited in claim 11 wherein the layers comprise, in addition to the adhesive layer, one or more materials which are independently plastic or metal.
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) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |