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...
Patent
1988-10-14
1989-10-03
Welsh, Maurice J.
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...
524839, 524840, C08L 7504
Patent
active
048717983
ABSTRACT:
The present invention is directed to a process for the preparation of stable polyurethane-polyurea dispersions in a multi-stage process by forming an isocyanate-terminated prepolymer having an ionic group content of up to about 50 milliequivalents per 100 g of prepolymer by reacting an organic polyisocyanate (a) with at least two isocyanate-reactive components (b1) and (b2) wherein component (b1) has at least one ionic or potential ionic hydrophilic group, characterized in that
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Dormish Jeffrey
Henning Wolfgang
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Roy Thomas W.
Welsh Maurice J.
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