Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1983-01-28
1987-02-17
Albrecht, Dennis L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
210728, 210734, 210735, 522 59, 522 60, 522 66, 522 84, 522167, 522175, 522911, 523130, 523131, 524779, 526219, 5262191, 5262196, 526227, 526238, 526264, 252 85C, 252 855R, 252 855D, C08F 404, C08F 408, C08F 2610, C09K 700
Patent
active
046440208
ABSTRACT:
Water-soluble polymers comprising an N-vinyl lactam are found to be useful in processes wherein the polymer is introduced into a subterranean wellbore.
Polymers useful in the recovery of natural resources are prepared by polymerizing an N-vinyl lactam by free radical initiation, with polymerization conducted in an aqueous solution polymerization medium preferably containing a mixture of dissolved electrolytes, or in a polymerization medium consisting essentially of a tertiary alkanol. Copolymers of such N-vinyl lactams with unsaturated amides, and terpolymers prepared by polymerizing an N-vinyl lactam and an unsaturated amide with a selected termonomer compound are also useful when prepared by these methods.
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Albrecht Dennis L.
Phillips Petroleum Company
Robbins A. L.
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