Dendritic polymer, dendritic polymer monomer, and hyperbranched copolymer

Patent metadata

Field	Value
Publication number	US-9475894-B2
Application number	US-201414314756-A
Country	US
Kind code	B2
Filing date	Jun 25, 2014
Priority date	Jun 25, 2013
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A dendritic polymer, a dendritic polymer monomer, and a hyperbranched copolymer are described. The dendritic polymer monomer has a structure denoted by Z′-(Q)n-Y, wherein Z′ represents a structure denoted by the following formula (a) and/or formula (b), Q represents a dendritic constitutional repeating unit of the dendritic polymer monomer, n represents the generation number of the dendritic polymer monomer, and is an integer within a range of 2-6, Y represents a group that contains SO 3 − or COO − , R 14 -R 16 can be identical to or different from each other, and are H or C 1 -C 5 alkyl respectively. The monomer can be used as a copolymerizable monomer for preparing a hyperbranched polymer applicable to oil fields, the obtained hyperbranched polymer can be used as an inhibiting filtrate reducer for drilling fluid, flocculating agent, encapsulating agent, heat-resistant and salinity-resistant polymer flooding agent, and thickening agent for fracturing liquid, etc.

First claim

The invention claimed is:

1. A dendritic polymer, having a structure denoted by Z-(Q)n-Y, wherein Z represents a group that can have condensation reaction with an acyl halide, Q represents a dendritic constitutional repeating unit of the dendritic polymer, n represents a generation number of the dendritic polymer, and is an integer within a range of 2-6, and Y represents a group containing SO 3 − and COO − .

2. The dendritic polymer according to claim 1 , wherein Z is OH or NH 2 , Q is a structure denoted by the following formula (I), and Y is a structure denoted by the following formula (II),

in formula (I), R 1 represents C 2 -C 5 alkylene, R 2 -R 4 can be identical to or different from each other, and are H or C 1 -C 5 alkyl respectively; in addition, for n structures denoted by formula (I), R 1 -R 4 can be identical to or different from each other;
in formula (II), R 8 -R 13 can be identical to or different from each other, and are H or C 1 -C 5 alkyl respectively, p and q can be identical to or different from each other, and are an integer within a range of 0-5 respectively, and M is H, Na, or K.

3. The dendritic polymer according to claim 2 , having a structure denoted by the following formula (III) or formula (IV),

wherein Z, R 1 -R 4 , R 8 -R 13 , M, p, and q are in the same definitions as those described in claim 2 .

4. The dendritic polymer according to claim 2 , wherein Z is OH; R 1 is CH 2 CH 2 ; all of R 2 -R 4 and R 8 -R 13 are H; M is Na or K; and both p and q are 0 or 1.

5. The dendritic polymer according to claim 3 , wherein Z is OH; R 1 is CH 2 CH 2 ; all of R 2 -R 4 and R 8 -R 13 are H; M is Na or K; and both p and q are 0 or 1.

6. The dendritic polymer according to claim 1 , wherein Y is free of a C═C bond.

Assignees

• China Petroleum & Chem Corp
• Sinopec Zhongyuan Oilfield Service Corp Drilling Eng Res Inst

Inventors

• Wang Zhonghua

Classifications

• C08F222/06

  Maleic anhydride · CPC title

• C08F22/38 Primary

  Amides · CPC title

• C08F220/58

  containing oxygen in addition to the carbonamido oxygen {, e.g. N-methylolacrylamide, N-(meth)acryloylmorpholine} · CPC title

• C08F220/60

  containing nitrogen in addition to the carbonamido nitrogen · CPC title

• C08F220/585 Primary

  and containing other heteroatoms, e.g. 2-acrylamido-2-methylpropane sulfonic acid [AMPS] · CPC title