Production method of high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion

An ultra-high molecular weight, acrylate technology, applied in the production field of high solid content ultra-high molecular weight acrylate copolymer emulsion, can solve the problems of difficulty in reducing product density, insufficient melt strength, small molecular weight, etc. Effects of strength and balance torque, increased emulsion stability, and increased molecular weight

Inactive Publication Date: 2019-08-09
山东源邦新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method for producing a high-solid-content ultra-high molecular weight acrylic copolymer emulsion. The agent system is introduced into the emulsion polymerization of acrylate mixed monomers, and the high solid content (50-55%) ultra-high molecular weight (Mw range 9.5 million-10.5 million, Mw range 9.5 million-10.5 million, Intrinsic viscosity η range 16-20) acrylic ester copolymer, successfully replaced the old production process of traditional foaming regulators, improved the common problems of traditional foaming regulators such as small molecular weight and wide distribution, poor fluidity, insufficient melt strength, Unfavorable factors such as difficulty in reducing product density

Method used

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  • Production method of high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion
  • Production method of high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion
  • Production method of high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion

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Effect test

Embodiment 1

[0044] The production method of the described high solid content ultra-high molecular weight acrylate copolymer emulsion, the steps are as follows:

[0045] (1) 80 parts by weight of water, 0.1 parts by weight of emulsifying dispersant sodium pyrophosphate, 0.5 parts by weight of emulsifying agent sodium lauryl sulfate, 0.01 parts by weight of wetting agent sodium diisobutylnaphthalene sulfonate, 0.02 parts by weight Add the pH regulator sodium bicarbonate into the normal pressure reactor, start stirring, control the rotation speed at 200r / min, and raise the temperature to 55°C;

[0046] (2) 100 parts by weight of monomers (1 part by weight of functional monomer isooctyl acrylate, 5 parts by weight of butyl acrylate, and 94 parts by weight of methyl methacrylate) are added to the reactor, and oxygen is exhausted with nitrogen;

[0047] (3) Heat up to 40°C at a stirring speed of 200r / min, add 0.01 parts by weight of redox initiator (including 0.005 part of oxidant potassium per...

Embodiment 2

[0049] The production method of the described high solid content ultra-high molecular weight acrylate copolymer emulsion, the steps are as follows:

[0050](1) 100 parts by weight of water, 0.9 parts by weight of emulsifying dispersant colloidal silicon dioxide, 3.0 parts by weight of emulsifier sodium dodecylbenzenesulfonate, 0.01 parts by weight of wetting agent NNO (methylene bis-naphthalenesulfonic acid Sodium), 0.02 parts by weight of pH regulator ammonia water (content 28%) are added to the normal pressure reactor, start stirring, control the rotating speed of 150r / min, and heat up to 50°C;

[0051] (2) 100 parts by weight of monomers (5 parts by weight of functional monomer butyl methacrylate, 35 parts by weight of butyl acrylate, and 60 parts by weight of methyl methacrylate) were added to the reactor, and oxygen was exhausted with nitrogen;

[0052] (3) Warm up to 38°C at a stirring speed of 150r / min, add 0.05 parts by weight of a redox initiator (0.025 parts of ammon...

Embodiment 3

[0054] The production method of the described high solid content ultra-high molecular weight acrylate copolymer emulsion, the steps are as follows:

[0055] (1) With 100 parts by weight of water, 0.6 parts by weight of emulsifying dispersant nano silicon dioxide, 2.0 parts by weight of emulsifier (wherein, 1.5 parts by weight of sodium lauryl sulfate, 0.5 parts by weight of sodium dodecylbenzenesulfonate ), 0.02 parts by weight of wetting agent (sodium dialkyl succinate sulfonate), 0.15 parts by weight of pH regulator ammonia (content 25%) are added to the normal pressure reactor, and the stirring is started, and the control speed is 100r / min, and the temperature is raised to 52°C;

[0056] (2) 100 parts by weight of monomers (3 parts by weight of functional monomer butyl methacrylate, 17 parts by weight of butyl acrylate, and 80 parts by weight of methyl methacrylate) were added to the reactor, and oxygen was exhausted with nitrogen;

[0057] (3) Warm up to 39°C at a stirrin...

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Abstract

The invention relates to a production method of an acrylic ester copolymer emulsion, in particular to a production method of a high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion. According to the production method, an emulgator, a wetting agent, an emulsification dispersing agent, a pH conditioning agent and an oxidation-reduction initiator system are introduced into acrylic ester mixed monomer emulsion polymerization, by adopting one-time feeding, the oxidation-reduction system and an ultra-low temperature emulsion polymerization technology, an acrylic ester copolymer with high solid content (50-55%) and ultra-high molecular weight (the Mw range is 9.5 million-10.50 million, and the intrinsic viscosity eta range is 16-20) is prepared, a traditional old technology for producing a foaming conditioning agent is successfully replaced, and the adverse factors are overcome that the traditional foaming conditioning agent is generally low in molecular weight, widein distribution range, poor in flowability and low in melt strength, and the density of the finished product is difficultly lowered. The prepared emulsion is high in solid content, spray drying is easily achieved, the product moisture is easy to control, the energy is saved, and the consumption is lowered.

Description

technical field [0001] The invention relates to a production method of an acrylic ester copolymer emulsion, in particular to a production method of a high solid content ultra-high molecular weight acrylic ester copolymer emulsion. Background technique [0002] PVC is a well-loved, popular and widely used synthetic material in the world today. Its global usage ranks first among all synthetic materials. my country is the world's largest PVC production and consumption country, and related PVC products have a broad market environment, which is both powerful and broad. Based on the rapid development of urban and rural construction engineering, transportation engineering, environmental engineering, energy and water conservancy engineering, etc., the market demand for PVC building materials and engineering materials is increasing day by day, and it is currently one of the plastic varieties with the largest output in my country. [0003] Extruded PVC foam products have developed m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F2/26C08L27/06C08J9/00
CPCC08F2/26C08F220/14C08J9/0061C08J2327/06C08F220/1804C08F220/1808
Inventor 呼建强刘翰卿张振东马超吴凯
Owner 山东源邦新材料股份有限公司
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