Patent US4841010A successfully refreshed from Google Patents.
US4841010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triglycidyl ether/tetraglycidyl ether/alkadiene rubber/polyalkylene polyamine formulation
Assignee: Rafael Advanced Defense Systems Ltd
•
Filing: 1987-09-02
•
Granted: 1989-06-20
•
Expires: 2007-09-02
Abstract
Abstract The invention relates to epoxy resins which can be cured at ambient or slightly elevated temperature. The compositions can be used as adhesives and also as structural material. The epoxy resins of the invention retain advantageous characteristics at elevated temperatures, up to about 120 DEG C. The compositions are advantageously supplied as two-pack kits which are contacted with each other when the epoxy resin is to be used. The first component is a mixture of at least two epoxides; the second component is a curing system which contains at least two amines. The components are: A. epoxies: (1) a tetraglycidyl diamino-diaromatic alkane (2) a triglycidyl ether of an amino aromatic alkane B. amines: (1) a polyalkylene polyamine (2) an amino-terminated or carboxy terminated alkadiene rubber compound.
Inventors
- 👤 Hanna Dodiuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:32
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5006; C08G59/20; C08G59/32; C08G59/3227; C08L; C08L63/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
77 words
A twin-pack system for producing epoxy resins which retain mechanical and adhesive properties at elevated temperatures, up to about 120° C., and which can be cured at ambient or slightly elevated temperatures, wherein pack (1) comprises in combination: a. a tetraglycidyl diamino-diaromatic alkane, and b. a triglycidyl ether of an amino aromatic compound; and wherein pack (2) comprises in combination: a curing system consisting of: a. a polyalkylene-polyamine; and b. an aminoterminated or carboxyterminated alkadiene rubber compound.
Claim 2
Dependent Claim
77 words
A twin-pack system for producing epoxy resins which retain mechanical and adhesive properties at elevated temperatures, up to about 120° C., and which can be cured at ambient or slightly elevated temperatures, wherein pack (1) comprises in combination: a. a tetraglycidyl diamino-diaromatic alkane, and b. a triglycidyl ether of an amino aromatic compound; and wherein pack (2) comprises in combination: a curing system consisting of: a. a polyalkylene-polyamine; and b. an aminoterminated or carboxyterminated alkadiene rubber compound.
Claim 3
Dependent Claim
26 words
A two-pack system according to claim 1, where the constitients of pack (1) are in combination a tetraglycidyl-4,4'-diaminophenyl alkane and a triglycidyl ether of an aminophenol.
Claim 4
Dependent Claim
23 words
A two-pack system according to claim 1, where the components of pack (1) comprise tetraglycidyl-4,4'-diaminodiphenyl methane (TGDDM) and triglycidyl ether of p-aminophenol (TGAP).
Claim 5
Dependent Claim
38 words
A two-pack system according to claim 1, where the components of pack (2) comprise: a poly-ethylenepolyamine, comprising n(-CH 2 ) 2 -NH-groups, where n is an integer from 1 to 6, and an aminoterminated or carboxyterminated alkadiene acrylonitrile.
Claim 6
Dependent Claim
20 words
A system according to claim 4, where the components are triethylene tetramine (TETA) and aminoterminated or carboxyterminated butadiene acrylonitrile (ATBN).
Claim 7
Dependent Claim
36 words
A composition according to claim 1, containing, in addition an additive selected from one or more of film-forming polymers, carriers, fillers, plasticizers, flexibilizers, reinforcing agents, coupling agents, antioxidants, catalysts and felt-type or non-woven fabric type supports.
Claim 8
Dependent Claim
17 words
A composition according to claim 1, which contains, one or more additional epoxy resins and/or additional amines.
Claim 9
Dependent Claim
45 words
A two-pack system according to claim 1, where the individual components are provided in separate form, and where the Pack (1) and Pack (2) components are admixed before use, and Pack (1) and Pack (2) are subsequently contacted with each other for epoxy resin preparation.
Claim 10
Dependent Claim
20 words
A composition according o claim 1, for use as adhesive, where the composition is applied to a felt as carrier.
Claim 11
Dependent Claim
14 words
A composition according to claim 6, containing about 3 to 6 parts 2-ethyl-4-methyl imidazole.
Claim 12
Dependent Claim
63 words
A process for the production of the epoxy resin of claim 1, for use as an adhesive or for forming or repairing articles, including completion and reconstruction of missing parts of a 3-dimensional body which comprises admixing the amine curing agents, blending sequentially the epoxy constituents into the curing agent, and curing the resulting composition at between ambient temperature and about 80° C.
Claim 13
Dependent Claim
18 words
A process according to claim 11, where the curing is effected between ambient temperature and about 50° C.
Claim 14
Dependent Claim
16 words
A process according to claim 11, where the two-pack components are stored under refrigeration before use.
Claim 15
Dependent Claim
32 words
A cured product of the twin-pack system according to claim 1 obtained by mixing pack (1) and pack (2) and effecting curing at a temperature from about ambient to about 50° C.
Claim 16
Dependent Claim
72 words
A composition according to claim 1 consisting essentially of from about 40% to 75% of a triglycidyl ether of p-aminophenol; about 40% to 60% of either tetraglycidyl-4,4'-diaminodiphenyl methane or a mixture of tetraglycidyl-4,4'-diaminophenyl methane and an epoxy polyglycidyl resin of the bis phenol A type; 10-25% of triethylene tetramine; and about 12-40% of a compound selected from the group consisting of an amino-terminated butadiene acrylonitrile, carboxy-terminated butadiene acrylonitrile, and a mixture thereof.
Claim 17
Dependent Claim
40 words
A composition according to claim 5 consisting essentially of 40-60% of tetraglycidyl-4,4'-diaminodiphenyl methane, 40-72% of a triglycidyl ether of p-amino phenol, 12-20% of triethylenetetramine, and 12-36% of an amino-terminated butadiene acrylonitrile, a carboxy terminated butadiene acrylonitrile or a mixture thereof.
Claim 18
Dependent Claim
108 words
A composition for producing at ambient or only a slightly elevated temperature, a cured epoxy resin having high temperature shear and peel resistance at elevated temperatures up to about 120° C., said composition consisting essentially of (1) a mixture of polyglycidyl compounds including (a) a tetragylcidyl diamino-diaromataic alkane and (b) a triglycidyl ether of an amino aromatic compound; (2) a mixture of curing agents including (a) a polyalkylene-polyamine and (b) an aminoterminated alkadiene rubber-type compound; and (3) optionally an additive selected from the group consisting of one or more film-forming polymers, carriers, fillers, plasticizers, flexibilizers, reinforcing agents, coupling agents, antioxidants, catalysts and felt-type or non-woven fabric type supports.
Claim 19
Dependent Claim
108 words
A composition for producing at ambient or only a slightly elevated temperature, a cured epoxy resin having high temperature shear and peel resistance at elevated temperatures up to about 120° C., said composition consisting essentially of (1) a mixture of polyglycidyl compounds including (a) a tetragylcidyl diamino-diaromataic alkane and (b) a triglycidyl ether of an amino aromatic compound; (2) a mixture of curing agents including (a) a polyalkylene-polyamine and (b) an aminoterminated alkadiene rubber-type compound; and (3) optionally an additive selected from the group consisting of one or more film-forming polymers, carriers, fillers, plasticizers, flexibilizers, reinforcing agents, coupling agents, antioxidants, catalysts and felt-type or non-woven fabric type supports.
Claim 20
Dependent Claim
41 words
A process according to claim 11 wherein said curing is effected in two stages comprising a first stage for up to two hours at a temperature slightly above ambient temperature up to 50° C., and a second stage at ambient temperature.
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) | 1992-06-19 | 1992-12-19 | 1993-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-19 | 1996-12-19 | 1997-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-19 | 2000-12-19 | 2001-06-20 | $7700.00 | Window Closed / Lapsed |