prov:value
| - Suitable modifiers are for example maleic acid, methylmaleic acid, itaconic acid, tetrahydrophthalic acid, the anhydrides and imides thereof, fumaric acid, the mono- and diesters of these acids, for example with C1 - and C2 -C8 -alkanols, the mono- or diamines of these acids, N-phenylmaleimide, maleohydrazide, the chlorine of trimellitic anhydride, 4-acetoxycarbonylphthalic anhydride, chloroethano
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