Title:
【発明の名称】水溶性共重合体、その製造およびその用途
Document Type and Number:
Japanese Patent JPS58502213
Kind Code:
A
Abstract:
Auxiliary agents for chemical flooding of petroleum deposits and auxiliary agents used in well drilling fluids are water-soluble copolymers containing a statistical distribution of (a) 5 to 95% by weight of structural units of formula I (I) (b) 0 to 30% by weight of structural units of formula II (II) (c) 0 to 80% by weight of structural units of formula III (III) (d) 5 to 60% by weight of structural units of formula IV (IV) wherein R1 and R2 are the same or different and represent hydrogen, methyl, or ethyl or together are trimethylene to cyclic pentamethylene; R3 represents hydrogen or methyl; R4 represent a imidazolyl-(1) or imidazolyl-(2) moiety; Y is a single covalent bond or the formula -CO-NH-C(CH3)2-CH2-; and X+ is a cation.
Inventors:
Wool Claus
Bana-Man The Ames Kay
Engelhard Free-Dorizhi
Patel Ave India
Bana-Man The Ames Kay
Engelhard Free-Dorizhi
Patel Ave India
Application Number:
JP50014083A
Publication Date:
December 22, 1983
Filing Date:
December 14, 1982
Export Citation:
Assignee:
Kasella Actien Gezershyaft
Hoechst Actien Gezershaft
Dresser-Industries-Inco-Politeted
Hoechst Actien Gezershaft
Dresser-Industries-Inco-Politeted
International Classes:
C08F20/00; C08F20/52; C08F26/00; C08F220/56; C08F220/58; C08F226/02; C08F220/26; C08F226/06; C08F246/00; C09K8/035; (IPC1-7): C08F220/56; C08F220/58; C08F226/02; C08F226/06
Attorney, Agent or Firm:
Ezaki Mitsuyoshi