Domestic carbon hydroxy silicone oil processes continue to iterate, opening new growth opportunities in the resin modification sector
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(September 3, 2026) In the domestic specialty silicone materials sector, new progress has been made in the synthesis and mass production processes of carbon hydroxy silicone oil. Several silicon material companies have completed process optimization and batch stabilization debugging of carbon hydroxy silicone oil. Their products are accelerating the implementation of downstream fields such as coatings, polyurethane modification, and high-end furniture paints, further advancing the domestic substitution process of high-end modified silicone oil.
Carbon-hydroxyl silicone oil is a carbon-hydroxyl-terminated polydimethylsiloxane. Relying on the C-OH carbon-hydroxyl active functional group, it can chemically react with isocyanates, epoxy, carboxyl groups, and other groups, chemically bonding into organic polymer systems. Unlike ordinary physical blend silicone oils, it features low migration and good recoating properties, improving the smooth feel of resin systems, weather resistance, low-temperature resistance, and anti-fouling performance. It is a key additive raw material for polyurethane, amino baking paint, and epoxy resin modification.
In the past, domestic carbon hydroxy silicone oil faced pain points such as large fluctuations in functional control and high residues in small molecule rings, with high-end applications long dependent on overseas imports. By 2026, domestic companies will achieve controllable hydroxyl values and effective control of ring impurities through addition-alcohol coupling synthesis routes combined with multi-stage molecular distillation purification technologies. Some product grades meet EU REACH and LFGB regulatory requirements, enabling export supply targeting furniture coatings, plastic modification, and some contact substrate scenarios.
From downstream market feedback, the furniture coatings industry has become the fastest-growing application sector for carbon hydroxysilicone oil. Adding this material to furniture paint systems can improve the smoothness and stain resistance of the paint film without covering the wood grain base color. Marker stains can be wiped away with a damp cloth, significantly enhancing abrasion resistance, and procurement demand in children's furniture and high-end solid wood coating fields continues to rise. At the same time, in areas such as polyurethane synthetic materials, synthetic leather, and plastic release lubrication, the number of customer samples and batch validation projects has significantly increased.
Industry research institutions indicate that as VOC control in coatings tightens, polymer materials require increasing additive reactivity and low mobility. As a reactive modified organosilicon, market demand for carbon-hydroxysilicon oil is steadily rising. However, the number of domestic enterprises with stable large-scale mass production is limited, and there is still a structural gap in high-end grade supply. Many organosilicon companies are laying out technical upgrades on related production lines, and capacity is expected to be further released within the next 1-2 years.
Industry technicians remind that when using carbon hydroxy silicone oil, it needs to match the reaction groups of the resin system, and during the formulation stage, it is necessary to properly adjust the addition amount and curing conditions to fully realize the modification effect. With the iteration of new downstream materials, carbon hydroxy silicone oil will continue to penetrate new scenarios such as new energy sealing materials and specialty adhesives, with growth potential worth watching.