US4007079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy composition and its use as an adhesive
Assignee: Olin Corp
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Filing: 1975-10-28
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Granted: 1977-02-08
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Expires: 1995-10-28
Abstract
Abstract An improved epoxy resin composition is disclosed which incorporates a select group of chlorine-containing polyols. The improved composition is used as an adhesive and in various other applications.
Inventors
- 👤 Richard J. Turley
- 👤 Alexandre Ozolins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:46
CPC Classifications
C; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
63 words
A liquid, curable epoxy composition comprised of a. an epoxy resin having more than one α-epoxy group in the molecule, b. a curing agent for said resin, and c. a chlorine-containing polyol having an average of 2-8 hydroxy groups which is comprised of the product of the acid-catalyzed condensation of a polyhydroxy initiator with 4,4,4-trichloro-1,2-epoxybutane or a mixture thereof with a halogen-free epoxide.
Claim 2
Dependent Claim
63 words
A liquid, curable epoxy composition comprised of a. an epoxy resin having more than one α-epoxy group in the molecule, b. a curing agent for said resin, and c. a chlorine-containing polyol having an average of 2-8 hydroxy groups which is comprised of the product of the acid-catalyzed condensation of a polyhydroxy initiator with 4,4,4-trichloro-1,2-epoxybutane or a mixture thereof with a halogen-free epoxide.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said epoxy resin is a glycidyl ether.
Claim 4
Dependent Claim
27 words
The composition of claim 2 wherein said chlorine-containing polyol is employed in a proportion of about 25-250 parts per every 100 parts by weight of said resin.
Claim 5
Dependent Claim
16 words
The composition of claim 3 wherein said chlorine-containing polyol has an average of 2-6 hydroxy groups.
Claim 6
Dependent Claim
42 words
The composition of claim 4 wherein said epoxy resin is a glycidyl ether of a material selected from the group consisting of a bisphenol, a mononuclear dihydric phenol, a mononuclear trihydric phenol, a polynuclear phenol, an aliphatic polyol and a novalac resin.
Claim 7
Dependent Claim
35 words
The composition of claim 5 wherein said polyhydroxy initiator is selected from the group consisting of ethylene glycol, propylene glycol, butylene glycol, glycerin, trimethylolpropane, triethylolpropane, sorbitol, pentaerythritol, dextrose, sucrose, methyl glucoside, and a mixture thereof.
Claim 8
Dependent Claim
19 words
The composition of claim 6 wherein said condensation is carried out in the presence of a Lewis acid catalyst.
Claim 9
Dependent Claim
18 words
The composition of claim 7 wherein said Lewis acid catalyst is boron trifluoride or an etherate derivative thereof.
Claim 10
Dependent Claim
15 words
The composition of claim 8 wherein said epoxy resin is a glycidyl ether of bisphenol-A.
Claim 11
Dependent Claim
44 words
The composition of claim 9 wherein the chlorine-containing polyol has an average of 2-4 hydroxy groups and the proportion of said 4,4,4-trichloro-1,2-epoxybutane that is reacted with said polyhydroxy initiator ranges from about 1 to about 5 moles per every hydroxy group in said initiator.
Claim 12
Dependent Claim
25 words
The composition of claim 10 wherein said chlorine-containing polyol is a condensate of a polyhydroxy initiator first with 4,4,4-trichloro-1,2-epoxybutane and then with a halogen-free epoxide.
Claim 13
Dependent Claim
15 words
The composition of claim 11 wherein said halogen-free epoxide is ethylene oxide or propylene oxide.
Claim 14
Dependent Claim
27 words
The composition of claim 10 wherein said chlorine-containing polyol is employed in a proportion of about 35-220 parts per 100 parts by weight of said epoxy resin.
Claim 15
Dependent Claim
28 words
The composition of claim 13 wherein said polyhydroxy initiator is selected from the group consisting of ethylene glycol, glycerin, trimethylolpropane and a mixture of ethylene glycol and dextrose.
Claim 16
Dependent Claim
26 words
In a method of bonding two surfaces together by means of an adhesive, the improvement of employing as said adhesive the epoxy composition of claim 1.
Claim 17
Dependent Claim
18 words
The method of claim 15 wherein said epoxy composition is cured at a temperature of about 100°-250° F.
References Cited (Backward Citations)
US3269961A
Cited
US3496120A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-08 | 1980-08-09 | 1981-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-08 | 1984-08-09 | 1985-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-08 | 1988-08-09 | 1989-02-08 | $7700.00 | Window Closed / Lapsed |