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Preparation method of amphiphilic polymer with long branched chain structure

An amphiphilic polymer and long-chain branched technology, which is applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of insufficient surface activity of emulsifier solutions, affecting emulsification effect, and lack of active groups. Achieve good application value, good emulsification effect, and simple production process

Active Publication Date: 2018-03-27
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet different needs, it is necessary to develop a variety of amphiphilic polymers. Traditional polymer emulsifiers often start with the change of amphiphilic components, so the development cost is high and the cycle is long
Moreover, the salt and temperature resistance of traditional polymer emulsifiers needs to be further improved. At the same time, the lack of active groups makes the emulsifier polymer have fewer action sites, and the surface activity of the emulsifier solution is insufficient, which affects the emulsification effect.

Method used

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  • Preparation method of amphiphilic polymer with long branched chain structure
  • Preparation method of amphiphilic polymer with long branched chain structure
  • Preparation method of amphiphilic polymer with long branched chain structure

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Preparation of terpolymer containing epoxy groups: Dissolve 2.835g of acrylamide, 2.093g of 2-acrylamido-2-methylpropanesulfonic acid, and 0.069mL of glycidyl methacrylate in 45mL of dimethyl sulfoxide The free radical copolymerization reaction was carried out in , the mole fraction ratio of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, and glycidyl methacrylate was 79.0:20:1.0, and the mass fraction of monomers was 10%. The initiator is 0.025 g of azobisisobutyronitrile, the mass fraction is 0.5%, the reaction temperature is 65° C., and the reaction time is 10 h. The H NMR spectrum of the polymer is attached figure 1 .

[0043]Preparation of amino-terminated binary copolymer: 5.796g of acrylamide, 4.204g of sodium styrene sulfonate, and 0.050g of mercaptoethylamine were dissolved in 50mL of water for free radical copolymerization. The molar fraction of acrylamide and sodium styrene sulfonate The ratio is 80:20, and the monomer mass fraction is 20%. The init...

Embodiment 2

[0047] Preparation of terpolymer containing epoxy groups: Dissolve 2.852g of acrylamide, 2.097g of 2-acrylamido-2-methylpropanesulfonic acid, and 0.048mL of glycidyl methacrylate in 45mL of dimethyl sulfoxide Carry out free radical copolymerization reaction in the medium, the mole fraction ratio of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, and glycidyl methacrylate is 79.3:20:0.7, and the mass fraction of monomer is 10%. The initiator is 0.025 g of azobisisobutyronitrile, the mass fraction is 0.5%, the reaction temperature is 65° C., and the reaction time is 10 h.

[0048] Preparation of amino-terminated binary copolymer: 5.796g of acrylamide, 4.204g of sodium styrene sulfonate, and 0.050g of mercaptoethylamine were dissolved in 50mL of water for free radical copolymerization. The molar fraction of acrylamide and sodium styrene sulfonate The ratio is 80:20, and the monomer mass fraction is 20%. The initiator is azobisisobutylamidine hydrochloride, the mass fracti...

Embodiment 3

[0052] Preparation of terpolymer containing epoxy groups: Dissolve 2.863g of acrylamide, 2.100g of 2-acrylamido-2-methylpropanesulfonic acid, and 0.035mL of glycidyl methacrylate in 45mL of dimethyl sulfoxide Carry out free radical copolymerization reaction in the medium, the molar fraction ratio of acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, and glycidyl methacrylate is 79.5:20:0.5, and the monomer mass fraction is 10%. The initiator is 0.025 g of azobisisobutyronitrile, the mass fraction is 0.5%, the reaction temperature is 65° C., and the reaction time is 10 h.

[0053] Preparation of amino-terminated binary copolymer: 5.795 g of acrylamide, 4.204 g of sodium styrene sulfonate, and 0.050 g of mercaptoethylamine were dissolved in 50 mL of water for free radical copolymerization. The molar fraction of acrylamide and sodium styrene sulfonate The ratio is 80:20, and the monomer mass fraction is 20%. The initiator is azobisisobutylamidine hydrochloride, the mass frac...

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Abstract

The invention relates to a preparation method of an amphiphilic polymer with a long branched chain structure. The amphiphilic polymer is obtained through enabling a terpolymer containing an epoxy group and a binary polymer containing an amino end group according to the mass ratio of 1:2 to 1:5. In a high polymer chain structure of the amphiphilic polymer with the long branched chain structure provided by the invention, the long branched chain structure exists, and acting sites are more. In addition, the active group such as a benzenesulfonic acid group is contained, so that a reaction space ofan emulgator is further expanded, a better emulsification effect is achieved, and a solution is good in temperature resistance and salt tolerance, and high in surface and interfacial activity.

Description

technical field [0001] The invention relates to a preparation method of an amphiphilic polymer with a long-chain branched structure, and belongs to the technical field of water-soluble polymers. Background technique [0002] Due to its amphiphilic structure and high molecular weight, it can be effectively adsorbed on the surface interface, and the polymer emulsifier has better emulsification performance with smaller molecular surfactants. A heteroarm star-shaped polymer emulsifier and a preparation method thereof. The polymer emulsifier is composed of two different monomers through the reversible addition-fragmentation chain transfer polymerization RAFT method to form a polymer linear polymer with a degree of polymerization of 60-150. Arms, one of which is heat-sensitive and the other is water-soluble, and then these two polymer arms are used as regulatory reagents to form a core-crosslinked star-shaped polymer emulsifier through a heterogeneous polymerization cross-linking ...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F220/56C08F220/58C08F220/32C08F212/14C08F8/34C09K8/584
CPCC09K8/584C08F8/34C08F220/56C08G81/021C08F220/585C08F220/325C08F212/14
Inventor 刘义刚李娟邹剑谭业邦王秋霞刘昊周法元张华王弘宇韩玉贵
Owner CHINA NAT OFFSHORE OIL CORP
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