Reaction equation
C[C:2]12[CH2:11][CH2:10][CH2:9][CH2:8][CH:7]1[C:6](=[O:12])[O:5][C:3]2=[O:4].C1[CH:17]2[CH:18]3[C:23](=[O:24])[O:22][C:20](=[O:21])[CH:19]3[CH:14]1[CH:15]=[CH:16]2.C[C:26]12[CH:32]3[C:33]([O:35][C:36](=[O:37])[CH:31]3[CH:28]([CH:29]=[CH:30]1)C2)=[O:34]>>[C:6]1(=[O:12])[O:5][C:3](=[O:4])[CH:2]2[CH2:11][CH2:10][CH2:9][CH2:8][CH:7]12.[C:23]1(=[O:24])[O:22][C:20](=[O:21])[CH:19]2[CH2:14][CH2:15][CH:16]=[CH:17][CH:18]12.[C:36]1(=[O:37])[O:35][C:33](=[O:34])[C:32]2=[CH:26][CH:30]=[CH:29][CH:28]=[C:31]12.[CH:10]1[C:9]([C:33]([C:16]2[CH:15]=[CH:14][C:19]3[C:20]([O:22][C:23](=[O:24])[C:18]=3[CH:17]=2)=[O:21])=[O:34])=[CH:8][C:7]2[C:6]([O:5][C:3](=[O:4])[C:2]=2[CH:11]=1)=[O:12]Participants
7
Procedure
The liquid, organic acid anhydrides which are used as epoxy resin curing agents in carrying out the invention, include 1-methyl hexahydrophthalic anyhydride, 1-methyltetrahydrophthalic anhydride, NADIC anhydride, NADIC methyl anhydride, and the like liquid anhydrides; and blends of hexahydrophthalic anhydride, tetrahydrophthalic anhydride, phthalic anhydride, pyromellitic dianhydride, polyazelaic polyanhydride, the reaction product of trimellitic anhydride and a glycol, and benzophenone tetracarboxylic acid dianhydride solids with any of the above liquid anhydrides, to provide a liquid admixture of anhydrides. The anhydrides may be used singly or in admixture but the resultant material must be a liquid.
Sources & evidence
- ORD record
- ord-6c5d5ea440b04d66bb8e73d6014ac60b
- Source dataset
- uspto-grants-1978_02
- Patent number
- US04076626
Linked notes
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