Process for preparing continuously variable-composition copolyme

Details Process for preparing continuously variable-composition copolyme Process for preparing continuously variable-composition copolyme

1998-02-12

2000-10-31

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263285, 5263293, C08F 200

Patent

active

061404314

ABSTRACT:
A process for the preparation of continuously variable-composition copolymers by effecting gradual changes in monomer composition during the polymerization is disclosed. Poly(meth)acrylate copolymers made by the process of the present invention have improved lubricating oil additive properties, for example, as pour point depressants, when compared to related polymer additives made by conventional means.

REFERENCES:
patent: 4048413 (1977-09-01), Wilkens
patent: 5281329 (1994-01-01), Mueller et al.
patent: 5468817 (1995-11-01), Da Lio et al.
B. Zhao, J. Shenyang Inst. Chem. Tech., vol. 8, No. 3, pp. 1-5, "Depression Effect of Mixed Pour Point Depressants for Crude Oil", 1994, (translated from the original text of pp. 228-230).
R.J. Kopko, et al., Society of Automotive Engineers, Fuels and Lubricants Meeting, pp. 1-11, "Effect of VI Improver on the In-Service Viscosity of Hydraulic Fluids", Jun. 3-5, 1975.

Affiliated with

Also associated with

Rating

Process for preparing continuously variable-composition copolyme does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for preparing continuously variable-composition copolyme, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing continuously variable-composition copolyme will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2052857