Polymer product for treating leather
AssigneeRohm Co., Ltd.
InventorsJuergen Christner, Harald Bauer, Maria L. Weber, Victor N'Gueyilbe
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Abstract
The invention concerns graft copolymers, useful for the treatment of leather, comprising monomers of the formula ##STR1## grafted onto a base polymer comprising monomers of the formula ##STR2## wherein R.sub.1 and R.sub.2 stand for a hydrocarbon group having 2 to 24 carbon atoms, with the proviso that the groups R.sub.1 and R.sub.2 have van der Waals volumes which differ from one another by less than 30 percent.
Claims5
A graft copolymer, adaptable to the treatment of leather, comprising the product obtained by grafting monomers comprising at least one methacrylate ester graft monomer of the formula ##STR6## wherein R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms, onto a compatible non-crosslinked acrylate ester base polymer comprising 55-100 percent by weight of at least one monomer of the formula ##STR7## wherein R.sub.2 stands for a hydrocarbon group having 2 to 24 carbon atoms, and less than 0.01 percent by weight of polyfunctional esters, with the proviso that the groups R.sub.1 and R.sub.2 have van der Waals volumes which differ from one another by less than 30 percent of the value of the larger volume, whereby compatibility of the graft monomers and base polymer is assured.
Dependencies are inferred from the claim text.