Patent US4115296A successfully refreshed from Google Patents.
US4115296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhalocarboxylic acid salts as accelerators for curing epoxide resins
Assignee: BASF Corp
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Filing: 1976-12-16
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Granted: 1978-09-19
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Expires: 1996-12-16
Abstract
Abstract To accelerate the curing of epoxide resins by particular curing agents, i.e., polyamines, polyaminoamides, polycarboxylic acids, or polycarboxylic acid anhydrides, there is employed an aliphatic or araliphatic monocarboxylic acid group at least two halogen atoms chosen from fluorine and chlorine atoms, or a salt thereof, such as magnesium trifluoroacetate and magnesium trichloroacetate.
Inventors
- 👤 Christopher Michael Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:17
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/68
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
76 words
A composition comprising a. a curing agent for epoxide resins, which is a polyamine, a polyaminoamide, a polycarboxylic acid, or a polycarboxylic anhydride, and b. a lithium, sodium, calcium, zinc, barium, copper, cobalt, nickel, manganese, vanadyl vanadium, chromic chromium, or magnesium salt of an aliphatic or araliphatic monocarboxylic acid of 2 to 8 carbon atoms, bearing on the carbon atom adjacent to the carboxyl group at least two halogen atoms chosen from fluorine and chlorine atoms.
Claim 2
Dependent Claim
76 words
A composition comprising a. a curing agent for epoxide resins, which is a polyamine, a polyaminoamide, a polycarboxylic acid, or a polycarboxylic anhydride, and b. a lithium, sodium, calcium, zinc, barium, copper, cobalt, nickel, manganese, vanadyl vanadium, chromic chromium, or magnesium salt of an aliphatic or araliphatic monocarboxylic acid of 2 to 8 carbon atoms, bearing on the carbon atom adjacent to the carboxyl group at least two halogen atoms chosen from fluorine and chlorine atoms.
Claim 3
Dependent Claim
17 words
The composition of claim 1, in which (b) is a saturated aliphatic acid or a salt thereof.
Claim 4
Dependent Claim
18 words
The composition of claim 1, in which (b) is a perfluorinated or perchlorinated acid or a salt thereof.
Claim 5
Dependent Claim
26 words
The composition of claim 1, in which (b) is dichloroacetic acid, α,α-dichloropropionic acid, perfluoropropionic acid, perfluoro-n-butyric acid, trifluoroacetic acid, or trichloroacetic acid, or a salt thereof.
Claim 6
Dependent Claim
15 words
The composition of claim 1, in which (b) is dissolved in an inert organic solvent.
Claim 7
Dependent Claim
27 words
The composition of claim 5, in which the said solvent is 2-methoxyethanol, ethylene glycol, diethylene glycol, N-methylpyrrolidone, γ-butyrolactone, benzyl alcohol, dibutyl phthalate, butane-1,4-diol, or ethyl methyl ketone.
Claim 8
Dependent Claim
15 words
The composition of claim 1, in which the curing agent (a) is an aromatic polyamine.
Claim 9
Dependent Claim
12 words
The composition of claim 1, which further contains (c) an epoxide resin.
Claim 10
Dependent Claim
78 words
The composition of claim 8, in which the epoxide resin (c) contains, per average molecule, at least one group of the formula ##STR2## directly attached to an atom of oxygen, nitrogen, or sulfur, where either R and R 2 each represent a hydrogen atom, in which case R 1 denotes a hydrogen atom or a methyl group, or R and R 2 together represent --CH 2 CH 2 --, in which case R 1 denotes a hydrogen atom.
Claim 11
Dependent Claim
21 words
The composition of claim 8, in which the epoxide resin (c) is a polyglycidyl ester, a polyglycidyl ether, or an N,N'-diglycidylhydantoin.
Claim 12
Dependent Claim
34 words
The composition of claim 8, containing from 0.2 to 2 parts by weight of the component (b) per 100 parts of the combined weights of the curing agent (a) and the epoxide resin (c).
Claim 13
Dependent Claim
39 words
A two part pack, the components of which, on mixing, form the composition of claim 8, one part containing the curing agent (a) and the other part the epoxide resin (c), at least one part containing the component (b).
Claim 14
Dependent Claim
14 words
The product obtained by allowing or causing to cure the composition of claim 8.
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) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |