Curing agent for epoxy resins to impart excellent solvent resistance
A curing agent for epoxy resins is described. It applies to epoxy resins having very high resistance to solvent and chemical attack. The curing agent consists of an aromatic diamine, an aralkanol, an epoxy novolac, and an aromatic acid. Methylene dianiline is the preferred aromatic diamine but other diamines such as, for example, metaphenylene diamine, and xylylene diamine may be employed if desired. The aralkanol can be benzyl alcohol. The increased viscosity and cross-linking of the finished product is enhanced by the epoxy novolac, accelerated by the aromatic acid, such as salicylic acid. When mixed with a liquid polyepoxide, the curing agent gives prompt cure to a finished product having excellent solvent resistance. (1 claim)
- Assignee:
- Dow Chemical Co.
- Patent Number(s):
- US 3753917
- OSTI ID:
- 6667273
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360401* -- Polymers & Plastics-- Preparation & Fabrication-- (-1987)
AROMATICS
CHEMICAL REACTIONS
CROSS-LINKING
CURING
EPOXIDES
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERIZATION
POLYMERS
RESINS
SOLUBILITY
VISCOSITY