Epoxy resin
- Dayton, OH
By mixing one part of a prepolymer containing a polyamine partially polymerized with an organic epoxide and subsequently reacted with a fatty acid containing from 8 to 32 carbon atoms, and then reacting this prepolymer mixture with 3 parts of an organic epoxide, a composition was obtained which made a gas frothable, shear-stable, room temperature curing, low density foam. A particularly advantageous prepolymer was prepared using a polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, and tetraethylenepentamine, partially polymerized with an organic epoxide having an average molecular weight of about 350 and having an epoxide equivalent of 185 to 192, and reacted with 2-10 weight percent linoleic acid. When one part of this prepolymer was reacted with about three parts of epoxy, and frothed by whipping in air or nitrogen an epoxy foam was produced which could be troweled onto surfaces and into corners or crevices, and subsequently cured, at near ambient temperature, to a strong dimensionally stable foam product.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- United States of America as represented by United States Energy (Washington, DC)
- Patent Number(s):
- US 3969286
- OSTI ID:
- 862595
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
185
192
2-10
32
350
acid
acid containing
advantageous
air
ambient
ambient temperature
atoms
average
average molecular
carbon
carbon atom
carbon atoms
composition
consisting
containing
corners
crevices
cured
curing
density
density foam
diethylenetriamine
dimensionally
dimensionally stable
epoxide
epoxy
epoxy foam
epoxy resin
equivalent
fatty
fatty acid
foam
frothable
frothed
gas
linoleic
mixing
mixture
molecular
molecular weight
near
near ambient
nitrogen
obtained
oleic acid
organic
partially
particularly
particularly advantageous
percent
polyamine
polymer containing
polymerized
prepared
prepolymer
produced
product
reacted
reacting
resin
selected
shear-stable
stable
strong
subsequently
subsequently reacted
surfaces
temperature
tetraethylenepentamine
triethylenetetramine
troweled
weight
weight percent
whipping