Cross-linked resins
AssigneeTakeda Chemical Industries, Ltd.
InventorsKazuhiro Arita, Yasuo Sano
Life of this patent
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Abstract
A cross-linked resin produced by heating a mixture of (a) a bis(2-oxazoline) compound, (b) an aromatic polyamine compound which has at least two amino groups in the molecule and (c) a polyepoxy compound which has at least two epoxy groups in the molecule at elevated temperatures, preferably in the presence of an oxazoline ring-opening polymerization catalyst. The resin shows a high mechanical strength and toughness, a very small water absorption and a very high resistance to heat.
Claims20
A cross-linked resin produced by heating a mixture of (a) a bis( 2-oxazoline) compound, (b) an aromatic polyamine compound which has at least two amino groups in the molecule and (c) a polyepoxy compound which has at least two epoxy groups in the molecule at an elevated temperature of not lower than 80.degree. C.
A method of producing a cross-linked resin which comprises:
- heating a mixture of (a) a bis(2-oxazoline) compound, (b) an aromatic polyamine compound which has at least two amine groups in the molecule and (c) a polyepoxy compound which has at least two epoxy groups in the molecule at an elevated temperature of not lower than 80.degree. C.
Dependencies are inferred from the claim text.