2 methyl-1, 3 propylene glycol MPO product application

MPO application areas
1. Polyester resin
Unsaturated polyester resin
Coil coating
Powder coating
High solid polyester paint
2.PET modification
3. Polyurethane
4. Polycarbonate
5. Other
Ink moisturizer
Personal care products
MPO used in polyester resin advantages
Unsaturated polyester tree tire (UPR)
It has higher tensile and bending resistance, high elongation, low modulus and low thermal deformation temperature. MPO polyester does not hydrolyze easily. Very superior physical properties and resistance to water, acid corrosion, light color, good transparency.
Used for rolling steel materials
Both flexibility and pencil hardness, good solvent compatibility, no turbidity precipitation and long-term outdoor weather resistance.
For high solid polyester coatings
The film is transparent and has high hardness, excellent impact strength and adhesion; Good resistance to dirt, moisture and weather. It has a good fullness.
For powder coatings
Reduce melt viscosity and improve operability. Good storage stability without clumping.
Used in the field of polyester resin
Application in coil steel coating
In a wide range of tests, the steel coil coating resin synthesized by adding MPO has OT~1T flexibility, 1H~2H slow pencil hardness, good solvent compatibility, and no turbidity precipitation phenomenon. The main reason is that the addition of MPO can effectively reduce the crystallization and miscibility of aromatic polyesters.
Application field
According to the different properties and structure of the resin, it can be used for the top paint, primer and back paint of the coil coating.
Application characteristics
Strong weather resistance
High flexibility
High wear resistance
Excellent corrosion resistance
Replacing or combining NPG with MPO can reduce the reaction operating temperature and improve process control.
MPO provides paint resins with high flexibility and wear resistance.
MPO resin has good results in accelerated weather resistance test.
After 1000 hours of salt spray testing, the MPO-based resin showed a better appearance than the NPG resin.
Application in high solid polyester coatings
At present, the prominent disadvantages of polyol monomer NPG, which is widely used in polyester coatings, are long reaction time, easy to form crystalline resin and poor transparency of coatings. For example, the high solid polyester coating was synthesized by using MPO instead of NPG, and the esterification rate of liquid MPO was fast and the time was short. Such as acid value (KOH)
To 10mg/g only 190min, while NPG takes 270min.
Studies have shown that the high solid polyester resin synthesized by using functional monomer MPO has a good fullness, significantly improves the construction solid content of amino baking enamel, and reduces the pollution to the environment. In addition, MPO has more advantages than NPG in terms of price.
Application field
Applied to car, bus and construction machinery painting

Application characteristics
The esterification speed is fast and the time is short
High hardness
High impact strength
High transparency
Strong adhesion
Application in polyester powder coatings
Polyester powder coating has strong adhesion, high hardness, impact resistance and weather resistance, and its key performance parameter glass conversion temperature (Tg) is expected to be above 50℃ to ensure good storage stability without caking, usually based on NPG/ terephthalic acid polyester Tg is above 60℃, high Tg accompanied by high baking viscosity, which brings inconvenience to processing. It was found that the MPO based polyester powder coating PC-T20 has a Tg of 53 ° C and does not require additional flexible components to reduce its Tg and melt viscosity. Therefore, the flexible characteristics of MPO will make it widely used in polyester powder coatings.
Application field
Thermal sensitive materials, automotive powder coatings, Marine, pipeline powder coatings, construction engineering and outdoor facilities and other industrial coatings.
Application characteristics
Good flexibility
Wide application prospect
Reduce Tg and melt viscosity
Used in PET modification field
PET crystallization modifier
Usually PET is easy to crystallize and opaque mist, often in the polymerization process to add phthalic acid in the main raw material terephthalic acid, polyester reaction to improve, but the unit price of phthalic acid is high; The addition of a small amount of MPO in another main raw material glycol, polyester reaction, and MPO modified PET can effectively reduce the cost.
Application field
It is applied to the transparent bottle made by blowing PET plastic fat granules.

MPO crystallization modifier product characteristics
Reduce crystallinity
Increase transparency
Improve hydrophilicity
Reduce cost
PET material hydrophilic modifier
In order to make PET hydrophilic, sulfonic acid group (-S03Na) polar hydrophilic group is introduced into the polyester macromolecular chain, which is conducive to water infiltration and hydrolysis process. With the increase of the amount of hydrophilic groups added, the modified polyester began to have a certain swelling in hot water, when the hydrophilic groups increased to a certain extent, the polyester has complete water solubility. However, due to the steric hindrance and polarity effect formed by the introduction of sulfonic acid groups, the viscosity of the melt rises sharply, which directly affects the spinnability and makes spinning difficult to proceed normally. PET and MPO copolymerization, with the help of methyl branch chains in MPO, after polymerization into PET, can destroy the symmetry of polymer molecules and mutual arrangement order, if the processing of the PET fiber after processing, the internal molecules are more disordered: the result is faster and easier to lock dye on the PET fiber.
Application field
Used in PET fiber, etc
Application characteristics
Excellent low temperature dyeability, good color fastness, low extensibility, high spinnability, good strength, energy saving, soft touch.
Used in the field of polyurethane
Polyurethane chain extender
As a new type of diols, its two primary hydroxyl groups have very high reactivity, which can shorten the reaction time. Thus increase the production efficiency, reduce operating costs, at the same time, the fork to reduce by-product generation, made of resin color is very light. Its unique non-crystallization makes the resin made of high stability and can be very good
It takes into account the strength and flexibility of the product, thus providing excellent chemical, water and weather resistance.
MPO as chain extender,PU film forming hardness is higher, the reason is that MPO molecule has a methyl side chain, resulting in the main chain is not easy to rotate, molecular rigidity increases, MPO as chain extender PU glass transition temperature is also higher.
MPO is mainly used in polyester polyols and chain extenders.
When MPO is used as a chain extender, the methyl group can reduce the crystallinity (hard segment) of the polyurethane and make the resin softer.
Application of MPO in polyester polyols
MPO can produce polyesters with primary hydroxyl groups at both ends and is an ideal intermediate for polyester polyols.
Its unique structure allows it to produce liquid polyesters that are easily soluble in traditional paint solvents.
The polyester polyols synthesized by MPO have excellent compatibility in polyurethane adhesive formulations.
Used in the field of polycarbonate
4. Advantages of application in polycarbonate
MPO polycarbonate polymers can be prepared by transesterification with dimethyl carbonate (DMC) or diethyl carbonate (DEC). Because MPO has a methyl branch chain and a pair of primary alcohol groups, it can effectively inhibit the crystallization of the synthesized polymer, even at low temperatures can still maintain the characteristics of flow, mainly as a soft chain intermediate in the polymer to synthesize PU, coatings and inks; At the same time, MPO polycarbonate has adjustable biodegradation properties, so it is used in yarn engineering, especially for the repair of soft yarn fabrics.
Application field
Applied to synthetic PU, paint and ink, soft yarn fabric repair.
Application characteristics
Inhibit crystallization of polymer
Maintain fluidity at low temperatures
Adjustable biodegradability
Other fields
MPO is used in plasticizers
MPO can be widely used in polyester plasticizers, vinyl electrical insulation cables, refrigerator seals, etc., with not easy migration characteristics, with excellent migration resistance; MPO/ adipic acid plasticizer has good compatibility with PVC, has excellent oil resistance characteristics, and can be used to make oil resistant gloves; The plastic agent added with MPO has non-crystallization and low glass conversion temperature, which can show excellent processing characteristics, and can make the paint and ink have better fluidity.
Application field
Cold resistant, oil resistant, migration resistant wire
Refrigerator seal
Oil resistant gloves
Coating ink
Application characteristics
Good migration resistance
Excellent oil resistance
Good plasticizing efficiency
MPO is used as ink moisturizer
MPO can be used as an ink moisturizer, which can reduce the formation of organic volatilization and precipitation, increase the fluidity of the ink, so as to avoid the blockage of the print head nozzle, significantly improve the printing effect, and can be printed on various media such as fiber, resin paper and even translucent film. For thermal inkjet printers, the drying time of the ink can also be shortened.
MPO ink moisturizer product features
Reduce volatilization and precipitation
Increase moisture and fluidity
Shorten drying time
MPO for personal care products
MPO appearance transparent, low toxicity, low volatility, excellent skin touch, good antibacterial and hydration. MPO can be used as soap substitute, neutralizer, emollient, emulsifier, sunscreen sunblock and moisturizer in cosmetics and personal care products, so that hydrophilic/oil-philic amphoterics coexist, so as to maintain the stability, transparency and homogeneity of the overall composition; It can also make the aroma retention more durable, so MPO can be used as a carrier solvent more widely; It is an economic substitute for high performance yeast such as propylene glycol, 1, 3-butanediol, glycerin, diethylene glycol, sorbitol, pentanediol, etc. It is used in the production of deodorant, antiperspirant, hair care solution, sunscreen, skin care products, lipstick, nail polish, etc.
MPO Personal Care product features
Good antimicrobial and hydration properties
Excellent skin touch
Lasting fragrance
Amphiphilic/oleophilic coexistence
Excellent stability, transparency and homogeneity