C5C9 Copolymer Petroleum Resin Tackifying Resin for Hot Melt Adhesives

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The compatibility between petroleum resin and elastomer is usually indicated by the wax cloud point. As a performance indicator related to the resin's relative molecular weight, molecular weight distribution, and resin polarity, the wax cloud point plays a crucial balancing role in the initial tack strength, holding strength, and 180° peel strength of hot melt adhesives. C5/C9 copolymer petroleum resin companies recommend that the lower the wax cloud point of petroleum resin, the better the compatibility between the elastomer and the resin-wax system. Shandong copolymer petroleum resin results in higher initial tack strength for hot melt adhesives but reduced holding strength. When the wax cloud point of petroleum resin increases, the holding strength improves, especially when the wax cloud point is between 150–160°C, where the holding strength is relatively high, but the initial tack strength of the hot melt adhesive decreases. (It is preliminarily speculated that this is related to the softness or hardness of the adhesive: softer adhesives have better initial tack, while harder adhesives have better holding strength.)

Initial tack strength and holding strength are two mutually constraining physical quantities. The result of their constraint is that petroleum resin has an optimal 180° peel strength. Therefore, high-quality tackifying resin should have an appropriate wax cloud point to achieve the best balance between initial tack strength and holding strength for hot melt adhesives, thereby optimizing the interfacial adhesion strength and cohesive strength of the adhesive. Ultimately, this forms a fiber-tearing bonding mode, achieving the best bonding effect. The wax cloud point of petroleum resin is generally best within the range of 70–110°C.

Light-colored petroleum resin, petroleum resin for adhesives, petroleum resin—9 resin carbon

Dezhou Pule Chemical Co., Ltd. primarily produces petroleum resin, C9 petroleum resin, C9 hydrocarbon resin, coumarone resin, and other products. C9 petroleum resin is offered at competitive prices, with a wide variety of petroleum resin types, and C9 petroleum resin is of high quality.

Recently, domestic petroleum resin prices have shown a weak and stable trend. In the Northeast market, the mainstream price of C5 petroleum resin No. 5 for road marking paint and adhesives is between 7,200–7,300 RMB/ton. Downstream market demand is sluggish, and prices remain low. In the East China market, the mainstream price of C5 petroleum resin No. 5 for road marking paint is between 8,300–8,500 RMB/ton, while the mainstream price for adhesive resin is between 8,800–9,200 RMB/ton. In the South China market, the mainstream price of C5 petroleum resin No. 5 for road marking paint and adhesives is between 8,500–9,000 RMB/ton, and the mainstream price for No. 1 hydrogenated petroleum resin is around 16,500–17,000 RMB/ton. Hydrogenated resin supply is tight, and C5/C9 copolymer petroleum resin manufacturers are maintaining firm prices. Influenced by the rise in refined oil prices, smooth demand for C5 blending, and an overall bullish market trend, the raw materials for C5 petroleum resin have increased. This has driven up the prices of adhesive resin and high-end hydrogenated petroleum resin.

No. 18 petroleum resin, tar resin, solid petroleum resin, No. 4 petroleum resin

Dezhou Copolymer Petroleum Resin | Petroleum Resin | C5/C9 Copolymer Petroleum Resin Manufacturer is provided by Dezhou Pule Chemical Co., Ltd. Dezhou Pule Chemical Co., Ltd. has strong capabilities and reliable credibility, having accumulated a large number of loyal customers in Shandong's natural resin industry and other sectors. The company's meticulous work attitude and continuous improvement and innovation philosophy will lead Qibang Chemical and you to join hands in stepping into a brilliant future and creating a better tomorrow together!