What is Bisacrylamide?

Overview

  • Name: Bis-acrylamide
  • Synonyms: MBA;BIS; napp; BIS MBA; BISACRYLAMIDE; DIACRYLAMIDOMETHANE; Methylenediacrylamide; Bis or Bis Acrylamide; Methylene Diarylamide; METHYLENE-BIS-ACRYLAMIDE
  • CBNumber: CB7332812
  • CAS 110-26-9
  • Molecular formula: C7H10N2O2
  • Molecular weight: 154.17

Bisacrylamide is a derivative of propylene phthalamide, also known as methylene bisacrylamide, abbreviated as MBA). MBA is a white or light yellow powdery crystal with a melting point of 185°C (decomposition), a density of 1.235g/cm, (50,°C), and low toxicity. The LDs of mice (by oral administration) are 390mg/kg, which is non-irritating to the skin. No neurotoxicity; soluble in water, ethanol, acetone and other organic solvents. MBA has two identical and very active reactive functional groups. It can be polymerized with a variety of ionic monomers to prepare ion exchange resins, and polymerized with sodium acetate to form a mixture. In addition, it can also be used in medical, cosmetics and paper processing fields. , The use is very wide.

Methylene bisacrylamide is a derivative of propylene phthalamide, also known as methylene bisacrylamide `abbreviated as MBA). MBA is a white or light yellow powdery crystal with a melting point of 185°C (decomposition), a density of 1.235g/cm, (50,°C), and low toxicity. The LDs of mice (by oral administration) are 390mg/kg, which is non-irritating to the skin. No neurotoxicity; soluble in water, ethanol, acetone and other organic solvents. MBA has two identical and very active reactive functional groups, which can be polymerized with a variety of ionic monomers to prepare ion exchange resins, and polymerized with sodium acetate to form a mixture. In addition, it can also be used in medical, cosmetics and paper processing fields. , The use is very wide.

What are the applications of bisacrylamide?

Acrylphthalamide (AM) is an important functional monomer. The polymer obtained by copolymerization with N, N, monomethylidene diacrylate (Bis) is used in many fields, such as medicine, biochemical industry, petroleum exploration, Wastewater treatment and other aspects have a very wide range of applications. The concentration of the monomer, the ratio of the monomer and the crosslinking agent, and the polymerization implementation method all directly affect the network structure and performance of the polymer.

1. Modification of synthetic resin

MBA can be used as a polymer crosslinking agent to improve the performance of synthetic resins and expand its scope of use. For example, polycondensation thermosetting resin modified by MBA. It can be molded at 190°C and 2.8MPa, and polypropylene resin is added to MBA. It can be molded at 232°C and 2.1MPa. PvC resin modified with MBA. It can be molded at 70°C and has good yellowing resistance. Rigid PVC modified by MBA has good UV resistance. Polyurethane resin modified by MBA can be used at 180°C. Molding, thermoplasticity, good dimensional stability. Adding MBA to the cellulose acetate film at 155-160℃ can reduce its solubility in acetone. After the ABS resin is modified by MBA, the gel content increases. The heat distortion temperature is also greatly increased.

2. Medical supplies

The copolymer synthesized by propylene phthalamide and MBA is used as a contact lens and has the advantages of non-toxicity, light permeability, elasticity, and good thermal stability. Phosphorus-containing polymers prepared by the reaction of MBA with phosphate esters can be used as anti-inflammatory drugs. Various pads and drug-absorbent materials used in surgical operations are used on the wound surface. It can absorb liquid exuded from the wound and promote the absorption of drugs through the skin.

3. Paper industry

The polymer obtained by the polymerization of MBA and Nitroacetate can be used as a paper enhancer. It is a copolymer with acrylic acid amine, acrylic acid and diethyl acrylate, and ethyl acrylate methyl acrylate. It can be used as a paper surface coating agent and water drainage enhancement Agent, the polymer obtained with ethylene diamine, can be used as a component of the photosensitive material of color photographic paper.

4. Adhesives and coatings

Acrylic acid and its vinegars and MBA can be used to produce pressure-sensitive adhesive tape by solution polymerization initiated by phthalide peroxide. Acrylic acid, methacrylic acid, ethyl acetate and MBA polymer can be used as metals. Anticorrosive coatings. Acrylic amine and MBA polymer can be used as a curing agent for magnetic materials, glass

Blending agent for glass fiber, nylon fiber non-woven fabric, Teflon fiber, etc. Acrylic acid and MBA copolymer can be used as battery electrode coating; acrylic acid, MBA and fiber turbinate graft polymerization can be used for recording on jet recording Paper coating.

5. Water treatment agent

Styrene, maleic acid, and MBA series gel polymers can be used as preservatives and flocculants for circulating cooling water. In addition, MBA can be used as a cross-linking agent for the production of water shutoff regulators for water injection wells in oil fields.

6. Electronics industry

Acrylphthalamide and MBA copolymer gel containing sodium nitride can be used as a solid electrolyte for fuel cells. Acrylic acid and MBA polymer treated with concentrated sulfuric acid can be used as the plate coating of lead storage batteries. Sodium styrene and MBA copolymer can be used as temperature sensors. Acrylphthalamide and MBA gel can be used as display materials (ECD) The electrolyte. The heat storage medium gel and acrylamide, MBA, N-methacrylamide gel can be used as a solar thermal energy collector [2].

7. Photosensitive resin

MBA is used as a photosensitive resin monomer to increase the hardness of the printing plate. It increases its water resistance and solvent resistance, and has the advantages of simple process, short plate making time, good abrasion resistance, printing resistance and high resolution. It is a screen Ideal photosensitive material for plate making in printing.

8. Cosmetics

The polymer emulsion made of acrylic acid and its salts and MBA in a composite emulsification system is used as a cosmetic emulsion, which can produce various lotions, skin care and hair care products, and has excellent safety, stability and moisturizing properties. The reaction product of MBA and polyaminopolyphthalamide can be used as a hair conditioner.

9. Water blocking agent and soil slope fixing agent

Using acrylic amine as the polymerization monomer and MBA as the crosslinking agent, the polymerization reaction is carried out under the action of initiator and accelerator to form a polymer hydrogel that is not fierce in water, commonly known as "acrylic gel", which is an excellent Chemical water blocking grouting material. It is poured into the construction site in the form of an aqueous solution, and polymerizes on site, which can fill and seal sand

Layer voids and rock cracks, stop the underground water channel, and cement and fix the soft sand, play a role in stabilizing and strengthening the foundation. The gel time can be controlled from a few seconds to tens of minutes, and it is widely used in reservoirs, dams, tunnels, and Waterproof sealing and soil stabilization of bridges, underground structures, mining, oil extraction, etc.

10. Concrete additives

The polymerizable reactive monomer with MBA as the cross-linking agent is added to the concrete material, and the concrete that has the effect of the redox system can increase the strength, accelerate the solidification speed, increase the waterproof performance, and shorten the maintenance period; if it is used in concrete In the coating agent, the water resistance can be improved.

11. Other applications

In addition to the above applications, MBA, sodium methacrylate polymer and related pigments can be mixed to produce jet inks; gel materials cross-linked with MBA are used for the immobilization and separation of protein, amino acids, nucleic acids, etc. in medical clinical testing. And the electrophoresis medium for testing, the water gel explosive made by MBA. It has good water resistance and is suitable for blasting operations in the water industry; in addition, MBA can also be used to prepare water-absorbent resins, fire-extinguishing gels, and fire-resistant dry Mixture and so on. Used as an important material for separating amino acids and an important raw material for photosensitive nylon or photosensitive plastics. It can be used as a water shutoff agent in oilfield drilling operations and construction grouting operations, and can also be used as a crosslinking agent in the synthesis of acrylic resins and adhesives. Used as raw materials for photosensitive nylon and photosensitive plastics, construction grouting materials, and also used in photography, printing, plate making, etc.