Solvent composition for use in carbonless copy systems
AssigneeChampion International Corporation
InventorsDavid N. Vincent, Cheng Hsiung Chang
Life of this patent
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Abstract
A solvent composition for use in carbonless copy systems consisting essentially of a combination of a mono-alkyl naphthalene, wherein said alkyl group contains from 1 to 3 carbon atoms per molecule and a di-alkyl naphthalene, wherein each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule. The solvent is used in the production of microcapsules wherein an isocyanate cross-linking agent is dissolved in the solvent.
Claims18
A solvent composition for use in carbonless copy systems in the absence of a halogenated solvent, wherein said solvent consists essentially of a combination of a mono-alkyl naphthalene, wherein said alkyl group contains from 1 to 3 carbon atoms per molecule, and a di-alkyl naphthalene, wherein each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule, said mono-alkyl naphthalene being present in an amount between about 25 and about 40% by weight of the alkylated naphthalenes present in said solvent.
A solvent composition for use in carbonless copy systems in the absence of a halogenated solvent wherein said solvent consists essentially of a combination of monoisopropylnaphthalene and a di-alkyl naphthalene, wherin each of said alkyl groups in said di-alkyl naphthalene contains from 2 to 4 carbon atoms per molecule, said monoisopropylnaphthalene being present in an amount between about 25 and about 40 percent by weight of the alkylated naphthalenes present in said solvent, said solvent composition additionally containing crystal violet lactone.
A solvent composition for use in carbonless copy systems in the absence of a halogenated solvent, wherein said solvent composition consists essentially of a combination of monoisopropylnaphthalene and diisopropyl naphthalene, said monoisopropylnaphthalene being present in an amount between about 25 and about 40 percent by weight of the alkylated naphthalenes present in said solvent, said solvent composition additionally containing crystal violet lactone and benzoyl leuco methylene blue.
Dependencies are inferred from the claim text.