石油树脂 C5 C9 应用区别

石油树脂是以石油裂解过程中副产物C5/C9馏分为原料，经前处理、聚合、蒸馏等工艺生产的一种热塑性树脂。石油树脂具有调节黏性和热稳定性好的特点，主要功能为提供增黏及润湿效果。石油树脂一般不单独使用，而作为促进剂、调节剂、改性剂和其他树脂一起使用。石油树脂根据原料的不同分为C5石油树脂、C9石油树脂、C5/C9共聚石油树脂及加氢石油树脂。不同种类的石油树脂具有一定的互通性，在某些领域可以互相替代，但在各个应用领域也有其独特性。

C5石油树脂：软化点低，颜色浅，不饱和度偏低，与其他树脂、橡胶等相容性好；主要应用在压敏胶、热熔胶、路标漆、合成橡胶、子午线轮胎等领域，也用在油漆、油墨等领域。

C9石油树脂：软化点高，颜色深，不饱和度较高，耐候性较好，与橡胶、SIS等相容性较差；主要应用在油漆、油墨等领域，在热熔胶、路标漆、橡胶等领域也有应用。

热聚主要用于粘合剂、橡胶、子午线轮胎等行业。

冷聚主要用于油漆、油墨、粘合剂/冷聚的价格一般要比热聚的贵上几千块

C5/C9共聚石油树脂：兼具C5C9石油树脂的特性，软化点相对较高，相容性相对较好；主要应用于热熔胶、合成橡胶、轮胎等领域。

加氢石油树脂：不饱和度低，无色，无特殊气味，耐候性、稳定性、相容性较好；主要应用在高档的涂料，彩色油墨、胶黏剂、马路标线漆等行业。

综上所述，C5石油树脂软化点低、气味小，粘结力高，主要应用在压敏胶、热熔胶、路标漆等领域；C9石油树脂气味相对较大、软化点高、相容性较差，主要应用在油漆、油墨和防腐涂料等领域；

经过加氢改性的石油树脂，使原有的双键和苯环饱和，并脱除树脂在聚合过程中残留的卤化物和硫、氮杂质。加氢后可以变成白色或透明，透明性在热熔胶、胶黏剂和PP薄膜改性剂等应用中十分重要，另外，加氢还可以改进粘合性、耐候性及用于热熔胶的EV A的相容性。因此，加氢石油树脂广泛应用于热熔胶、尿布及卫生用品的胶黏剂、新型涂料、油墨、高速公路路标漆等领域。

Petroleum resin is a kind of thermoplastic resin, which is byproducts in oil cracking by the process of pre treatment, polymerization, distillation，etc.,

The petroleum resin has the characteristics of good viscosity and thermal stability, and the main function is to provide the viscosity and the wetting effect.

Petroleum resins are generally not used alone, and are used as accelerators, modifiers, modifiers, and other resins. According to the different raw materials, petroleum resin is divided into C5 petroleum resin, C9 petroleum resin, C5/C9 copolymer petroleum resin and hydrogenated petroleum resin. The different types of petroleum resins have certain interoperability, in some areas can substitute each other, but also have their own unique characteristics in various application areas.

C5 petroleum resin, low softening point, light color, lower degree of unsaturation, good compatibility with other resins and rubber; mainly used in pressure-sensitive adhesive, hot melt adhesive, road marking paint, synthetic rubber, radial tires and other fields, also used in the paint, ink and other fields.

C9 petroleum resin: high softening point, deep color, higher degree of unsaturation, better weatherability, poor compatibility with rubber and SIS; mainly used in paint, ink and other fields, in the field of hot melt adhesive, road sign paint, rubber also have application.

C5 / C9 Copolymerized Petroleum Resin: combined characteristics of C5 and C9 petroleum resin, softening point is relatively higher, compatibility is relatively better, mainly used in hot-melt adhesives, synthetic rubber, tires and other fields.

Hydrogenation petroleum resin: low unsaturation, colorless, no special smell, better weatherability, stability and compatibility; mainly used in high-grade paint, color ink, adhesives, road marking paint etc. industries. In summary, C5 petroleum resin has low softening point, low odor, high binding strength, mainly used in the field of pressure-sensitive adhesive, hot melt adhesive, road sign paint, etc.; C9 petroleum resin has relatively large smell, high softening point, poor compatibility, mainly used in the field of paints, inks, and anti-corrosion coating; petroleum resin after hydrogenation modification, the original double bonds and aromatic saturated, in the polymerization process removing the resin residual halides and sulfur and nitrogen impurities. They can be hydrogenated into white or transparent, transparent is very important in the hot melt adhesive, adhesive and PP film modifier application. In addition, hydrogenation can also improve adhesion, weatherability and the compatibility with EV A in hot melt adhesive. Therefore, hydrogenation petroleum resin is widely used in the fields of hot melt adhesive, diapers and sanitary products, new paint, ink, highway road sign paint, etc.