Patent ID: 11879100
Assignee: BAKER HUGHES OILFIELD OPERATIONS LLC
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 4:
5. The method of claim 1 where the additive is the oxyalkylated acid-catalyzed alkylphenol formaldehyde resin, and where the oxyalkylated acid-catalyzed alkylphenol formaldehyde resin is selected from the group consisting of:
alkoxylated p-t-alkyl phenol resins where the alkyl group is selected from the group consisting of methyl, ethyl, propyl, butyl, and combinations thereof;
resins of formula (I):, where x ranges from 1 to 12, y ranges from 1 to 300, and n is such that the weight average molecular weight ranges from about 100 to about 15,000;
resins of formula (II):, where R is hydrogen or methyl, m ranges from 1 to 100, and p ranges from 1 to 50.