Lignin derivative polymers
AssigneeSouth African Inventions Development Corporation
InventorsGerrit H. Van der Klashorst, Antonio Pizzi, Flora-Anne Cameron
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Abstract
A polymer material of the product of reaction of a grass plant lignin derivative comprising lignin polymer fragments recovered from black liquor obtained in the pulping of grass plant material and containing an average of more than 0.4 sites per phenyl propane unit of the polymer fragments reactive to base catalyzed substitution and condensation reactions, with an electrophilic compound which is capable of reacting twice at one side or at least once at each of two different sites.
Claims24
A method of forming a polymer material, comprising reacting a grass plant lignin derivative comprising lignin polymer fragments recovered from black liquor obtained in the pulping of grass plant material and containing an average of more than 0.4 sites per phenyl propane unit of the lignin polymer fragments reactive to base catalyzed substitution and condensation reactions, with an electrophilic compound which is capable of reacting twice at one site or at least once at each of two different sites of the compound.
A polymer material comprising the product of reaction of a grass plant lignin derivative comprising lignin polymer fragments recovered from black liquor obtained in the pulping of grass plant material and containing an average of more than 0.4 sites per phenyl propane unit of the lignin polymer fragments reactive to base catalyzed substitution and condensation reactions, with an electrophilic compound which is capable of reacting twice at one site or at least once at each of two different sites of the compound.
Dependencies are inferred from the claim text.