US 10,094,399 B2 · Process of preparation of drag reducing polymers and usage thereof

Abstract

The present invention relates to a process for preparing ultra-high molecular weight polyalphaolefin. The process consists of polymerizing alphaolefin monomers using the catalyst system consisting of supported Ziegler-Natta catalyst without internal donor in presence of co-catalyst based on alkyl aluminums. The resulting ultra-high molecular weight polyalphaolefins having intrinsic viscosity ≥10 dL/g are used as drag reducing polymers for increasing throughput in the pipelines by reducing frictional resistance in turbulent flow.

Claims13

Dependent claims

A process for preparing polyalphaolefin having ultra-high molecular weight, the process comprising:

(i) contacting a mixture of supported Ziegler-Natta catalyst without internal donor and a co-catalyst with an alphaolefin monomer to obtain a polymerization mixture:
(ii) keeping the polymerization mixture of step (i) at temperature in the range of 15° C. to 30° C. for at least 24 hours;
and
(iii) keeping the polymerization mixture of step (ii) at temperature in the range of 20° C. to 35° C. for at least 14 days to achieve conversion of >90%.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

15/233,480Filed 10 Aug 2016

Priority

IN 4495/MUM/201530 Nov 2015

Published

US 2017/0152330 A11 Jun 2017

Granted

9 Oct 2018

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

F15D 1/06
In pipes or conduits: by influencing the boundary layer
C08F 210/16
Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: copolymers of ethene with alpha-alkenes, e.g. EP…
F17D 1/20
Pipe-line systems: arrangements or systems of devices for influencing or altering dynamic characteristics of the systems, e.g. for damping…
C09K 2208/28
Aspects relating to compositions of drilling or well treatment fluids: friction or drag reducing additives

Process of preparation of drag reducing polymers and usage thereof

Life of this patent

Process of preparation of drag reducing polymers and usage thereof

Life of this patent

Abstract

Claims13