Stainblockers for nylon fibers
AssigneeMonsanto Company
InventorsLe Moyne W. Plischke, Rupert J. Snooks, Jr.
Life of this patent
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Abstract
Oligomeric condensation products including repeat units of the formula: ##STR1## wherein M.sup.+ is a monovalent metal cation; and wherein a=1 or 2 and R is C(R.sub.f).sub.3, or wherein a=O, 1 or 2 and R is ##STR2## wherein each R.sub.f group is independently selected from the group consisting of Fluorine (F) or a perfluoroalkyl group; and b=0, 1 or 2; and a+b=0, 1 or 2; with the proviso that a+b=1 or 2 for at least about half of said repeat units. The products are useful as stainblockers in nylon carpets.
Claims7
An oligomer comprising at least 10 mole %, based on the total number of moles of aryl hydroxide units of said oligomer, repeat units of the formula ##STR9## wherein M.sup.+ is a monovalent metal cation;
- and wherein a=1 or 2 and R is C(R.sub.f).sub.3, with each R.sub.f group being independently selected from the group consisting of Fluorine or a perfluoroalkyl group;
- or wherein a=0, 1 or 2 and R is ##STR10## wherein each R.sub.f group is independently selected from the group consisting of Fluorine (F) or a perfluoroalkyl group;
- b=0, 1 or 2;
- and
- a+b=0, 1 or 2;
- with the proviso that
- a+b=1 or 2 for at least about half of said repeat units in said oligomer.
An oligomer comprising at least 10 mole %, based on the total number of moles of aryl hydroxide units in said oligomer, repeat units of the formula:
- ##STR11## wherein M.sup.+ is a monovalent metal cation, and a=0, 1 or 2;
- b=0, 1 or 2;
- and a+b=0, 1 or 2;
- with the proviso that a+b=1 or 2 for at least about half of the subject units in the oligomer.
Dependencies are inferred from the claim text.