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US 9,951,217 B2Granted
Copolymer of a bisphenol diglycidyl ether and a phenolphthalene and/or a phenolphthalimidine, method for the preparation thereof, article comprising the copolymer, and compositions comprising the copolymer
AssigneeSabic Global Technologies B.V.
InventorEdward Norman Peters
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Abstract
A copolymer exhibiting improved heat resistance relative to phenolic resins is formed by the reaction of a bisphenol diglycidyl ether and a phenolphthalein and/or a phenolphthalimidine in a molar ratio of 0.98:1 to 1.02:1 in the presence of a catalyst. The copolymer can be used to mold plastic parts. The copolymer is also useful as a flexibilizer in thermoset compositions, and useful as a compatibilizer in blends of polar and non-polar polymers, and blends of non-polar polymers and polar fillers.
Claims5
A method of forming a copolymer, the method comprising:
- adding
- an oligomeric bisphenol diglycidyl ether to
- an N-phenylphenolphthalimidine wherein the phenyl group bound to nitrogen is unsubstituted or substituted
- in a molar ratio of 0.98:1 to 1.02:1 in the presence of a tertiary amine catalyst to form a reaction mixture;
- and
- reacting
- the oligomeric bisphenol diglycidyl ether and
- the N-phenylphenolphthalimidine
- to form a copolymer;
- wherein the oligomeric bisphenol diglycidyl ether is added to the N-phenylphenolphthalimidine such that an excess of phenolic groups relative to epoxy groups is maintained in the reaction mixture.
7 more elements
Dependencies are inferred from the claim text.