Patent US4689375A successfully refreshed from Google Patents.
US4689375A
Expired / Lapsed
US
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Curable mixtures containing diethylphenyl biguanide and the use thereof
Assignee: Novartis Corp
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Filing: 1985-09-19
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Granted: 1987-08-25
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Expires: 2005-09-19
Abstract
Abstract The invention relates to curable mixtures comprising (a) at least one epoxy resin containing on average more than one epoxy group in the molecule, (b) at least one diethylphenyl-biguanide of formula I ##STR1## or a combination of a biguanide of formula I and a ketone resin, a ketone/formaledhyde resin or a phenoxy resin, as curing agent, and (c) optionally a curing accelerator. These mixtures are suitable for example as casting resins, laminating resins and, in particular, as powder coating compositions.
Inventors
- 👤 Horst Lauterbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:44
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08L; C08L63/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
A curable mixture comprising (a) at least one epoxy resin containing on average more than one epoxy group in the molecule, and (b) an effective amount of a combination of 2,6-diethylphenyl biguanide and a ketone resin, a ketone/formaldehyde resin or a phenoxy resin as curing agent.
Claim 2
Dependent Claim
46 words
A curable mixture comprising (a) at least one epoxy resin containing on average more than one epoxy group in the molecule, and (b) an effective amount of a combination of 2,6-diethylphenyl biguanide and a ketone resin, a ketone/formaldehyde resin or a phenoxy resin as curing agent.
Claim 3
Dependent Claim
19 words
A mixture according to claim 1 wherein component (b) is a combination of 2,6-diethylphenyl biguanide and a ketone/formaldehyde resin.
Claim 4
Dependent Claim
19 words
A mixture according to claim 1 which additionally contains as components (c) an effective amount of a curing accelerator.
Claim 5
Dependent Claim
17 words
A mixture according to claim 1, wherein component (a) is an epoxy resin based on bisphenol A.
Claim 6
Dependent Claim
16 words
A mixture according to claim 3, wherein component (c) is imidazole, a derivative thereof or tetramethylguanidine.
Claim 7
Dependent Claim
13 words
A mixture according to claim 5, wherein component (c) is imidazole or tetramethylguanidine.
Claim 8
Dependent Claim
36 words
A mixture according to claim 3, wherein component (a) is an epoxy resin based on bisphenol A, component (b) is a combination of 2,6-diethylphenyl biguanide and a ketone/formaldehyde resin and component (c) is imidazole or tetramethylguanidine.
Claim 9
Dependent Claim
14 words
A mixture according to claim 3, wherein component (c) is a quaternary ammonium salt.
Claim 10
Dependent Claim
12 words
A mixture according to claim 8, wherein component (c) is choline chloride.
Claim 11
Dependent Claim
18 words
A method for the production of cured products which comprises heating a curable mixture according to claim 1.
Claim 12
Dependent Claim
30 words
A moulding compound, whirl sintering powder, casting resin, injection moulding composition, impregnating resin, adhesive, tooling resin, laminating resin or powder coating composition comprising a curable mixture according to claim 1.
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) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |