公开(公告)号：US3559464A

公开(公告)日：1971-02-02

申请号：US3559464D

申请日：1969-11-13

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： FOUST CHARLES W ,  PHILIPPOFF WLADIMIR

IPC: G01N11/08 ,  G01N33/44

CPC classification number: G01N11/08 ,  G01N33/442

Abstract: THE VISCOSITY AND SHEAR MODULUS OF VISCOELASTIC MATERIALS ARE DETERMINED BY MEASURING THE PRESSURE DROP ACROSS TWO CAPILLARY TUBES IN SERIES CONNECTION. THE SECOND CAPILLARY TUBE IS ELONGATED, AND BOTH TUBES ARE OF UNIFORM DIAMETER THROUGHOUT THEIR LENGTHS. THE MATERIAL IS FORCED THROUGH THE TUBES BY A GEAR PUMP AT A KNOWN CONSTANT RATE OF SHEAR INDEPENDENT OF THE VISCOSITY OF THE VISCOELASTIC MATERIAL BEING TESTED.

公开(公告)号：US3660058A

公开(公告)日：1972-05-02

申请号：US3660058D

申请日：1969-03-17

Applicant: EXXON RESEARCH ENGINEERING CO

Inventor： FELDMAN NICHOLAS ,  PHILIPPOFF WLADIMIR

IPC: C10L1/14 ,  C10L1/16 ,  C10L1/18 ,  C10L1/22 ,  C10L1/04

CPC classification number: C10L1/143 ,  C10L1/1616 ,  C10L1/1641 ,  C10L1/165 ,  C10L1/1955 ,  C10L1/1963 ,  C10L1/1966 ,  C10L1/1973 ,  C10L1/2368

Abstract: The low temperature flowability of a middle distillate petroleum fuel oil, boiling in the range of about 250* to about 700* F. is improved and its pour point is lowered by adding to the fuel oil from about 0.01 to about 3 wt. % of an essentially saturated hydrocarbon fraction which is substantially free of normalparaffinic hydrocarbons, and which has a number average molecular weight in the range of about 600 to about 3,000.

Abstract translation: 沸点在约250至约700°F范围内的中间馏分石油燃料油的低温流动性得到改善，并且通过向燃料油中加入约0.01至约3wt。 基本上不含正链烷烃的基本上饱和的烃馏分的百分数，其数均分子量在约600至约3,000的范围内。