DMM: Major Process Improvements and Breakthroughs of Globally High-Market-Share Well-Known Brands

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I. Technological Indicator Breakthroughs & Process Improvements of China’s Top 5 Export Brands (Yida, Dena, Lixing, Longsheng, Sanmu, Technical Renovations Implemented 2025–2026)

(I) Ultra-High-Purity Electronic Grade Purification Breakthrough: Cross-Grade Compliance for Metal Ion Indicators & Mass Production Certification to SEMI G3/G4

1. Breakthrough Details

· Jiangsu Yida completed construction of a dedicated molecular sieve + special chelating resin adsorption purification line in Q2 2025, reducing total sodium/potassium/iron heavy metal impurities from the original 50ppb to ≤8ppb with stable purity of 99.992%, becoming the first domestic manufacturer to obtain SEMI G4 semiconductor electronic chemical certification.

· Jiangsu Dena implemented the same technical renovation by late 2025 with impurities ≤10ppb and SEMI G4 certification.

· Anhui Lixing expanded G3 grade refining equipment, achieving VOC residual ≤5ppm via SGS testing (old industry standard ≤20ppm).

· Zhejiang Longsheng supported molecular distillation equipment, locking high-end DMM purity at 99.99% and breaking Japanese and Korean brand monopolies on OLED cleaning materials.

· Jiangsu Sanmu optimized internal components of continuous rectification towers, controlling electronic grade byproducts ≤0.005%.

1. Benefits for Downstream Buyers Overseas semiconductor, OLED panel and lithium battery packaging adhesive purchasers can directly replace imported Japanese high-purity DMM without secondary impurity removal pre-treatment at factories. Formulation stability of electronic cleaning agents is enhanced, reducing electronic component cleaning reject rates by 18% while substituting highly toxic NMP solvents to meet EU RoHS controls.

(II) Catalyst Iteration Breakthrough: Higher Etherification Conversion & Optimized Per-Ton Production Costs

1. Breakthrough Details

· Longsheng and Sanmu jointly developed composite solid base catalysts, lifting DMM synthesis selectivity from the traditional 84%–86% to 91.5%–93% and cutting propylene oxide raw material loss by 7.2%.

· Yida and Dena replaced batch reactors with closed continuous processes, lowering production energy consumption by 27% versus national standard baselines and reducing waste liquid byproduct output by 62%.

· Lixing boosted self-sufficiency of raw materials to 71% via on-site propylene oxide supporting facilities.

1. Benefits for Downstream Buyers FOB prices for all DMM grades dropped 7%–11% year-on-year compared to 2024, lowering comprehensive raw material procurement costs for overseas coating and ink buyers. Batch-to-batch indicator fluctuation narrowed from ±0.3% to ±0.05%, reducing formulation calibration frequency.

(III) Environmental Indicator Upgrade Breakthrough: Full Product Line Compliance with New REACH Annex Restrictions

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Breakthrough Details All five leading manufacturers completed technical renovations for low-aromatic and low-methanol residues, reducing free methanol content from ≤0.15% to ≤0.02% with zero benzene series compounds and passing the latest REACH SVHC Substances of Very High Concern screening. Color of industrial-grade DMM was optimized from ≤20APHA to ≤8APHA.

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Benefits for Downstream Buyers Finished products from European, American and Southeast Asian end coating and pharmaceutical intermediate manufacturers smoothly clear EU and North American environmental access customs, avoiding customs detention risks from VOC and toxic substance violations. VOC emissions of waterborne paint end products can be further reduced by 20%–25%, aligning with global escalating environmental regulations.

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II. Product Iterations and Performance Improvements of the World’s Top 5 Overseas Brands (Daicel, Dow, Clariant, Honeywell, JNC)

(I) Low-Volatility Modified Grade Breakthrough: Custom Slow-Volatilization DMM for High-End Automotive Coatings

1. Breakthrough Details

· Daicel (Japan) launched molecularly modified DMM new products in 2025 via trace ether bond isomer regulation, cutting volatilization rate by 32% with stable boiling range of 176~178℃ and low-boiling light components <0.003%.

· Dow optimized solvent molecular ratios to develop low-temperature resistant DMM with no precipitation or layer separation at -35℃.

1. Benefits for Downstream Buyers Open time for spraying construction extended by 40% for overseas OEM automotive coating and construction machinery coating manufacturers, eliminating orange peel and whitening coating defects and lifting yield above 99.5%.

(II) Water-Free Lithium Battery Special Grade Breakthrough: Refined Control of Trace Water Indicators

1. Breakthrough Details

· Honeywell and Clariant launched inert gas closed rectification + membrane dehydration processes in Q3 2025, tightening water content of lithium battery dedicated DMM from ≤100ppm to ≤8ppm for direct use in lithium battery cathode slurry dispersion and electrolyte auxiliaries.

· JNC refined fractionation technology limits dipropylene glycol methyl ether homologue impurities ≤0.008%.

1. Benefits for Downstream Buyers Overseas power battery manufacturers eliminate additional molecular sieve dehydration processes, reduce slurry agglomeration and boost low-temperature battery discharge capacity by 6%–8%, substituting high-cost imported high-purity NMP.

(III) Biodegradable Modification Breakthrough: Low-Toxicity Formulation for Pharmaceutical Extraction

1. Breakthrough Details

· Clariant and Dow completed green modification processes, raising DMM biodegradability from the original 52% to 76% and improving LD50 toxicity indicators by 3 grades to meet European and US pharmacopoeia solvent access standards.

· Daicel upgraded all product lines to comply with the latest JIS K8912:2020 national standard.

1. Benefits for Downstream Buyers European and American API and plant extraction purchasers can substitute halogenated hydrocarbon extraction solvents; finished product solvent residues comply with USP pharmacopoeia standards, raising pass rates for terminal pharmaceutical product quality inspections.

III. Comprehensive Downstream End-User Benefits from Cross-Category Generic Technological Breakthroughs (Four Major End Sectors: Coatings, Electronics, New Energy, Pharmaceuticals)

1. Procurement Cost Side Domestic high-purity DMM mass production broke overseas monopolies, cutting unit prices of high-purity grades for overseas buyers by 12%–18% year-on-year and shortening lead times for long-term contract orders by 15 days.

2. Production Process Side Full coverage of graded products ranging from low to ultra-high purity enables targeted selection by customers: general industrial grade for conventional coatings, electronic grade for precision cleaning, and modified special grade for lithium batteries/pharmaceuticals. Single multi-purpose solvent reduces procurement categories of mixed solvents, cutting warehouse management costs.

3. Export Compliance Side Leading domestic and overseas products simultaneously pass multiple certifications including REACH, RoHS, JIS and SEMI. Buyers selling finished products to global regions avoid repeated solvent testing, shortening product launch cycles.

For more comprehensive and valuable DMM market information, please contact HiSiaddi customer service.