US4766186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy adhesive
Assignee: Huntsman Corp
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Filing: 1987-09-03
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Granted: 1988-08-23
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Expires: 2007-09-03
Abstract
Abstract The invention is an epoxy resin adhesive composition. The composition comprises: A. An epoxy resin component comprising: 1. 72 to 104 pbw of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule, 2. 8 to 16 pbw of trimethylolpropanetriacrylate 3. 10 pbw of a polyoxypropylene diureide of 2000 to 3000 molecular weight; and B. A curative component comprising: 1. a curing amount of triethyleneglycol diamine or tetraethyleneglycol diamine; and 2. an effective cure acclerating amount of piperazine, N-aminoethylpiperazine or mixture thereof. The fast curing adhesive offers high lap shear strength and relatively high peel strength.
Inventors
- 👤 Kathy B. Sellstrom
- 👤 Harold G. Waddill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:38
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/50; C08G59/504; C08G59/56
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
An adhesive comprising the cured reaction product of: A. An epoxy resin component comprising: 1. 72 to 104 parts by weight of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule, 2. 8 to 16 parts by weight trimethylolpropanetriacrylate 3. 5 to 15 parts by weight of a polyoxypropylene diureide having a molecular weight of about 2000 to 3000, and B. A curative component comprising: 1. a curing amount of triethyleneglycol diamine, and 2. an effective cure accelerating amount of piperazine, N-aminoethylpiperazine or mixture thereof.
Claim 2
Dependent Claim
91 words
An adhesive comprising the cured reaction product of: A. An epoxy resin component comprising: 1. 72 to 104 parts by weight of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule, 2. 8 to 16 parts by weight trimethylolpropanetriacrylate 3. 5 to 15 parts by weight of a polyoxypropylene diureide having a molecular weight of about 2000 to 3000, and B. A curative component comprising: 1. a curing amount of triethyleneglycol diamine, and 2. an effective cure accelerating amount of piperazine, N-aminoethylpiperazine or mixture thereof.
Claim 3
Dependent Claim
14 words
The adhesive of claim 1 wherein the polyoxypropylene diureide is of the formula: ##STR4##
Claim 4
Dependent Claim
14 words
An adhesive comprising the cured reaction product of: A. An epoxy resin component comprising:
Claim 5
Dependent Claim
14 words
An adhesive comprising the cured reaction product of: A. An epoxy resin component comprising:
Claim 6
Dependent Claim
76 words
72 to 104 parts by weight of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule, 2. 8 to 16 parts by weight trimethylolpropanetriacrylate. 3. 5 to 15 parts by weight of a polyoxypropylene diureide having a molecular weight of about 2000 to 3000, and B. A curative component comprising: 1. a curing amount of tetraethyleneglycol diamine, and 2. an effective cure acclerating amount of piperazine, N-aminoethylpiperazine or mixture thereof.
Claim 7
Dependent Claim
76 words
72 to 104 parts by weight of a vicinal polyepoxide having an average of at least 1.8 reactive 1,2-epoxy groups per molecule, 2. 8 to 16 parts by weight trimethylolpropanetriacrylate. 3. 5 to 15 parts by weight of a polyoxypropylene diureide having a molecular weight of about 2000 to 3000, and B. A curative component comprising: 1. a curing amount of tetraethyleneglycol diamine, and 2. an effective cure acclerating amount of piperazine, N-aminoethylpiperazine or mixture thereof.
Claim 8
Dependent Claim
14 words
The adhesive of claim 3 wherein the polyoxypropylene diureide is of the formula: ##STR5##
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) | 1991-08-23 | 1992-02-22 | 1992-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-23 | 1996-02-22 | 1996-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-23 | 2000-02-22 | 2000-08-23 | $7700.00 | Window Closed / Lapsed |