Patent ID: 6319971
Filing Date: 2001-11-20
Classification: C09K,C10L

Abstract:
A polymer composition useful for controlling the formation, growth and/or agglomeration of clathrate hydrate comprising two different polymers, designated Polymer x and Polymer y respectively, characterized in that Polymer x is a material whose In(WBF) is greater than that of Polymer y, which satisfy the following conditions: a) In(WBF) of x-In(WBF) of y is greater than 3 and b) the Synergism Index, defined by the following equation, is greater than 0.05: ##EQU5##where I.sub.(x,y) is the parameterDp.sub.(i) is the degree of polymerization of the Polymer IPh.sub.(i) is the hydrophilicity factor of the Polymer i defined by the following equation: ##EQU6##where bp.sub.(H20) is the boiling point of water in KT.sub.cloud is the cloud point in 1 wt % solution in distilled water of a polymer of a structure corresponding to either Polymer x or y when its molecular weight is over 10,000C(i) is the concentration of the Polymer i,where i is x or y.