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 (United States)
- 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
resin
mixing
prepolymer
containing
polyamine
partially
polymerized
organic
epoxide
subsequently
reacted
fatty
acid
32
carbon
atoms
reacting
mixture
composition
obtained
gas
frothable
shear-stable
temperature
curing
density
foam
particularly
advantageous
prepared
selected
consisting
diethylenetriamine
triethylenetetramine
tetraethylenepentamine
average
molecular
weight
350
equivalent
185
192
2-10
percent
linoleic
frothed
whipping
air
nitrogen
produced
troweled
surfaces
corners
crevices
cured
near
ambient
strong
dimensionally
stable
product
acid containing
average molecular
density foam
weight percent
carbon atoms
molecular weight
ambient temperature
fatty acid
polymer containing
dimensionally stable
carbon atom
epoxy resin
particularly advantageous
near ambient
subsequently reacted
epoxy foam
oleic acid
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