Patent US4351934A successfully refreshed from Google Patents.
US4351934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resin compositions
Assignee: Milliken Research Corp
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Filing: 1981-02-02
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Granted: 1982-09-28
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Expires: 2001-02-02
Abstract
Abstract Novel epoxy resin compositions are provided, comprising an epoxy resin and at least one aminoalkoxypropane of the formula: ##STR1## where R 1 , and R 2 are independently selected from H and ##STR2## where R 3 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms.
Inventors
- 👤 Edward W. Kluger
- 👤 Calvin D. Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:41
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C08G59/50; C08G59/504
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
An epoxy resin composition comprising: a. about 100 parts by weight of an epoxy resin; and b. from about 15 parts to about 35 parts by weight of an aminoalkoxypropane of the formula: ##STR11## where R 1 and R 2 are independently selected from H and ##STR12## where R 3 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms.
Claim 2
Dependent Claim
67 words
An epoxy resin composition comprising: a. about 100 parts by weight of an epoxy resin; and b. from about 15 parts to about 35 parts by weight of an aminoalkoxypropane of the formula: ##STR11## where R 1 and R 2 are independently selected from H and ##STR12## where R 3 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms.
Claim 3
Dependent Claim
14 words
The epoxy resin composition of claim 1, wherein said ##STR13## groups are terminal groups.
Claim 4
Dependent Claim
17 words
The epoxy resin composition of claim 2, wherein said epoxy resin is a diglycidyl ether of bisphenol.
Claim 5
Dependent Claim
16 words
The epoxy resin composition of claim 1, wherein said aminoalkoxypropane is represented by the formula: ##STR14##
Claim 6
Dependent Claim
81 words
In a method for curing an epoxy resin composition comprising incorporating an epoxy resin curing agent into an epoxy resin and heating the combination of the epoxy resin and the epoxy curing agent, the improvement which comprises said epoxy resin curing agent being represented by the formula: ##STR15## where R 1 and R 2 are independently selected from H and ##STR16## where R 3 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms.
Claim 7
Dependent Claim
81 words
In a method for curing an epoxy resin composition comprising incorporating an epoxy resin curing agent into an epoxy resin and heating the combination of the epoxy resin and the epoxy curing agent, the improvement which comprises said epoxy resin curing agent being represented by the formula: ##STR15## where R 1 and R 2 are independently selected from H and ##STR16## where R 3 is selected from H and a lower alkyl group having from 1 to about 4 carbon atoms.
Claim 8
Dependent Claim
14 words
The method of claim 5, wherein said aminoalkoxypropane is represented by the formula: ##STR17##
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |