Fluororpolymer compositions and treated substrates

Details Fluororpolymer compositions and treated substrates Fluororpolymer compositions and treated substrates

2006-11-13

2011-11-01

Cano, Milton I (Department: 1763)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S589000, C528S044000, C528S059000, C528S070000, C428S423100

Reexamination Certificate

active

08048953

ABSTRACT:
A polymer having at least one urea linkage prepared by: (i) reacting (a) at least one diisocyanate, polyisocyanate, or mixture thereof, having isocyanate groups, and (b) at least one fluorinated compound selected from the formula (I):in-line-formulae description="In-line Formulae" end="lead"?Rf(CH2CF2)p(CH2CH2)q(R1)r—XH  Formula (I)in-line-formulae description="In-line Formulae" end="tail"?whereinp and q are each independently an integer of 1 to 3;r is 0 or 1;X is —O—, —NH— or —S—;R1is a divalent radical selected from the group consisting of —S(CH2)n—,n is an integer of 2 to 4;s is an integer of 1 to 50;R2, R3, and R4are each independently hydrogen or an alkyl group containing 1 to 6 carbon atoms; andRfis a linear or branched chain perfluoroalkyl group having 1 to 6 carbon atoms; and(ii) reacting with (c) water, a linking agent, or a mixture thereof and methods for treating substrates to obtain surface effects is disclosed.

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