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US 2008/0157021 A1Published application
Nonaqueous electrolyte having maleimide additives and secondary cells employing the same
AssigneeIndustrial Technology Research Institute
InventorsTsung-Hsiung Wang, Jing-Pin Pan, Shur-Fen Liu, Yueh-Wei Lin
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Abstract
A composition having a bismaleimide oligomer and preparation methods thereof are provided. The composition having a bismaleimide oligomer comprises a bismaleimide oligomer, wherein the bismaleimide oligomer is in an amount of more than 75 parts by weight, based on 100 parts by weight of the composition. Specifically, the bismaleimide oligomer is prepared by reacting bismaleimide monomers with batch-added barbituric acid.
Claims20
A composition having a bismaleimide oligomer, comprising:
- a bismaleimide oligomer, wherein the bismaleimide oligomer is in an amount of more than 75 parts by weight, based on 100 parts by weight of the composition, and the bismaleimide oligomer is prepared by reacting bismaleimide monomers with batch-added barbituric acid.
A method for preparing a composition having a bismaleimide oligomer, comprising:
- providing a bismaleimide monomer dissolved in a solvent to prepare a solution;
- and
- adding a multi-batch of barbituric acid into the solution to react with the bismaleimide monomer, wherein, for each batch, the molar ratio of the barbituric acid to the bismaleimide monomer is less than 0.2.
Dependencies are inferred from the claim text.