Use of an orthoester-based polymer, method for de-emulsifying a water-in-oil emulsion, orthoester-based polymer, and method for producing a polymer or polymer blend

摘要

B environmentally friendly oil / water demulsifiers d. The invention relates to particular orthoester based polymers as well as to the use of specific orthoester based polymers as demulsifiers for water / oil emulsions. Products suitable for use according to the invention have the formula wherein R1 is hydrogen or a hydrocarbyl group having 1-4 carbon atoms, R2, R3 and R4 are independently a group comprising C3 -C4 alkyloxy And / or ethyleneoxy groups in any order, and an end group y, which is independently hydrogen, a hydrocarbyl group having 1-30 carbon atoms, a - (CH2) n ZnR5r6 or - ( Wherein each of R 5, R 6 and R 7 is independently an alkyl group having 1-22 carbon atoms or -CH 2 CH 2 OH, And z is 2 or 3,