US5300563A
Expired / Lapsed
US
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Polyester-based adhesives and composite structures
Assignee: Equistar Chemicals LP
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Filing: 1992-09-24
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Granted: 1994-04-05
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Expires: 2012-09-24
Abstract
Abstract Adhesives comprising carboxylic acid- or anhydride-grafted elastomeric polyester copolymers, and composite structures made therefrom, are disclosed.
Inventors
- 👤 Webster W. Kiang
- 👤 Peter D. Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:42
CPC Classifications
C; C09; C09J; C09J151/00; C09J151/08
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
65 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer consisting essentially of an acid or anhydride selected from the group consisting of crotonic acid and ethylenically unsaturated dicarboxylic acids and anhydrides, said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 2
Dependent Claim
65 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer consisting essentially of an acid or anhydride selected from the group consisting of crotonic acid and ethylenically unsaturated dicarboxylic acids and anhydrides, said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 3
Dependent Claim
23 words
The adhesive composition of claim 1 wherein said grafting monomer comprises between about 0.1 and about 10 wt. % of said graft copolymer.
Claim 4
Dependent Claim
39 words
The adhesive composition of claim 1 wherein said grafting monomer is a dicarboxylic acid or anhydride selected from the group consisting of maleic acid, fumaric acid, itaconic acid, citraconic acid, maleic anhydride, itaconic anhydride, citraconic anhydride and tetrahydrophthalic anhydride.
Claim 5
Dependent Claim
13 words
The adhesive composition of claim 1 wherein said grafting monomer is maleic anhydride.
Claim 6
Dependent Claim
23 words
An adhesive composition of claim 1 wherein said polyester copolymer (a) is a polycondensation product of terephthalic acid, butanediol, butenediol and polytetramethylene glycol.
Claim 7
Dependent Claim
73 words
The adhesive composition of claim 5 wherein said polyester copolymer (a) has a Shore D hardness of from about 40 to about 72, an MFR of about 10 to 20 g/10 min. as measured by ASTM D-1238, said grafting monomer (b) is maleic anhydride, and said maleic anhydride is present in said composition in grafted form in a concentration of from about 0.1 to about 200 millimoles per 100 grams of said composition.
Claim 8
Dependent Claim
70 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer consisting essentially of an acid or anhydride selected from the group consisting of crotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, and ethylenically unsaturated anhydrides said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 9
Dependent Claim
70 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer consisting essentially of an acid or anhydride selected from the group consisting of crotonic acid, maleic acid, fumaric acid, itaconic acid, citraconic acid, and ethylenically unsaturated anhydrides said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 10
Dependent Claim
23 words
The adhesive composition of claim 7 wherein said grafting monomer comprises between about 0.1 and about 10 wt. % of said graft copolymer.
Claim 11
Dependent Claim
23 words
The adhesive composition of claim 7 wherein said grafting monomer comprises between about 0.1 and about 4.4 wt. % of said graft copolymer.
Claim 12
Dependent Claim
25 words
The adhesive composition of claim 7 wherein said anhydride is selected from the group consisting of maleic anhydride, itaconic anhydride, citraconic anhydride, and tetrahydrophthalic anhydride.
Claim 13
Dependent Claim
13 words
The adhesive composition of claim 7 wherein said grafting monomer is maleic anhydride.
Claim 14
Dependent Claim
23 words
An adhesive composition of claim 7 wherein said polyester copolymer (a) is a polycondensation product of terephthalic acid, butanediol, butenediol and polytetramethylene glycol.
Claim 15
Dependent Claim
73 words
The adhesive composition of claim 12 wherein said polyester copolymer (a) has a Shore D hardness of from about 40 to about 72, an MFR of about 10 to 20 g/10 min. as measured by ASTM D-1238, said grafting monomer (b) is maleic anhydride, and said maleic anhydride is present in said composition in grafted form in a concentration of from about 0.1 to about 200 millimoles per 100 grams of said composition.
Claim 16
Dependent Claim
58 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer selected from the group consisting of maleic anhydride, itaconic anhydride, citraconic anhydride, and tetrahydrophthalic anhydride, said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 17
Dependent Claim
58 words
An adhesive composition comprising a graft copolymer of: (a) an elastomeric ethylenically unsaturated polyester copolymer including recurring ester units along the chain thereof, grafted with (b) a grafting monomer selected from the group consisting of maleic anhydride, itaconic anhydride, citraconic anhydride, and tetrahydrophthalic anhydride, said grafting monomer comprising up to about 10 wt. % of said graft copolymer.
Claim 18
Dependent Claim
23 words
The adhesive composition of claim 14 wherein said grafting monomer comprises between about 0.1 and about 10 wt. % of said graft copolymer.
Claim 19
Dependent Claim
23 words
The adhesive composition of claim 14 wherein said grafting monomer comprises between about 0.1 and about 4.4 wt. % of said graft copolymer.
Claim 20
Dependent Claim
13 words
The adhesive composition of claim 14 wherein said grafting monomer is maleic anhydride.
Claim 21
Dependent Claim
23 words
An adhesive composition of claim 14 wherein said polyester copolymer (a) is a polycondensation product of terephthalic acid, butanediol, butenediol and polytetramethylene glycol.
Claim 22
Dependent Claim
72 words
The adhesive composition of claim 18 wherein said polyester copolymer (a) has a Shore D hardness of from about 40 to about 72, an MFR of about 10 to 20 g/10 min. as measured by ASTM D-138, said grafting monomer (b) is maleic anhydride, and said maleic anhydride is present in said composition in grafted form in a concentration of from about 0.1 to 200 millimoles per 100 grams of said composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1997-04-04 | 1997-10-04 | 1998-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-04 | 2001-10-04 | 2002-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-04 | 2005-10-04 | 2006-04-05 | $7700.00 | Window Closed / Lapsed |