己内酯下游需求不断增加

国内己内酯的市场需求量逐年增加，根据海关数据分析，2010年国内己内酯进口增长率为41.9%，2011年为53.2%。与此同时，进口己内酯在中国大陆的销售价格也呈增长态势。

己内酯作为单体主要生产热塑性聚己内酯、聚己内酯多元醇、聚己内酯型聚氨酯、聚合物分散剂等。这些聚合物拥有独特的性能，可用于诸多领域，同时显示出绿色环保的优势。

热塑性聚己内酯具有良好的生物降解性能、形状记忆特性、低温柔韧性、耐水解性等诸多优点。在医疗领域，被广泛用于整形外科的骨科夹板、牙印模和放射治疗系统，以及骨折体内固定材料、手术缝合线等。在薄膜与复合包装领域应用方面，聚己内酯可与聚乳酸共混，用于制备吹塑薄膜、层压材料和包装材料，如可降解农用薄膜，一次性餐具，生物降解塑料袋等。

聚己内酯多元醇可用于丙烯酸、环氧树脂和乙烯基涂料中，作为反应型的稀释剂和改性剂，改善涂料的附着力，减少涂料中的挥发性化合物，提高涂料的抗冲击强度。

聚己内酯多元醇可以与二异氰酸酯反应来制备高性能的聚己内酯型聚氨酯。其弹性体的高温适应性、机械性能和耐溶剂性能都优于其他聚氨酯。如果采用脂肪族二异氰酸酯，则可制备生物可降解性聚氨酯材料。若体系中再引入亲水性基团，又可生产水性生物可降解聚氨酯，用于水性涂料和水性胶黏剂，可大大降低环境污染。聚己内酯型聚氨酯还具有其他优异性能，如低温柔顺性、耐候型、光稳定性、高抗撕裂强度及耐水解性等，在高档合成革、汽车涂料、鞋底料、胶黏剂等领域的应用较为广泛。

聚己内酯分散剂主要用于塑料填充体系中，由于无机填料如纳米碳酸钙与聚合物之间的极性差别很大，无机填料在聚合物中不能得到很好的分散，聚己内酯分散剂具有很好的分散效果，可增强两相的界面结合力。

规模化生产亟待提速

从全球己内酯产能分布来看，目前的生产企业主要集中在英国、日本和美国，装置产能较大，且产业链已较为成熟。巴陵公司1万吨/吨的己内酯工业装置的建设，将填补国内无大规模己内酯工业装置的空白，且满足中国市场的需求，将对国内己内酯产业链的形成和发展起到积极作用。

从行业生产技术现状来看，开展己内酯在生产过程总的阻聚技术攻关及低聚物的结聚技术攻关、降低能耗物耗、开发绿色环保的新工艺，依然是未来几年业内研究的重点。

从产品应用来看，国外对聚己内酯型聚氨酯的开发和应用较为成熟，而国内在这一领域仍属于起步阶段，业界专家建议国内聚氨酯生产企业大力开发聚己内酯型聚氨酯。

Caprolactone downstream demand increasing

Domestic caprolactone market demand is increasing year by year, according to customs data analysis, in 2010 domestic caprolactone import growth rate was 41.9%, 53.2% in 2011. At the same time, in the Chinese mainland sales price of imported caprolactone also showed growth.Caprolactone monomer as main production thermoplastic polycaprolactone, polycaprolactone polyol, polycaprolactone polyurethane polymer dispersing agent, etc.. These polymers have unique properties, it can be used in many fields, also showed that the green environmental protection advantages.Thermoplastic polycaprolactone has good biodegradation properties, shape memory properties, low temperature flexibility, water resistance etc.. In the medical field, is widely used for orthopedic department of orthopedics splint, dental impression and radiation treatment system, and the fracture is fixed in the materials, operation suture. In the film and composite packaging applications, polycaprolactone and poly lactic acid blend, used for the preparation of blown film, laminated materials and packaging materials, such as degradable agricultural film, disposable tableware, biodegradable plastic bags etc..Polycaprolactone polyols can be used for acrylic acid, epoxy resin and vinyl coating, as reactive diluent and modifier, improve the adhesion of coatings, reduce volatile compounds in coatings, improve the impact strength of coatings.Polycaprolactone polyol can react with diisocyanate for polycaprolactone polyurethane with high performance. High temperature adaptability, the elastomer mechanical properties and solvent resistance of polyurethane is better than the other. If the use of aliphatic diisocyanates, can preparation of biodegradable polyurethane materials. If the hydrophilic groups are introduced into a system, and can produce water soluble biodegradable polyurethane, for aqueous coatings and waterborne adhesive, can greatly reduce the pollution of the environment. Polycaprolactone polyurethane has excellent properties such as low gentle other, fairness, weathering, light stability, high tensile strength and resistance to hydrolysis, used in high-grade synthetic leather, automotive paint, sole material, adhesive and other fields widely.Polycaprolactone dispersing agent is mainly used for plastic filling system, the inorganic filler such as polarity difference between Nano - calcium carbonate and polymer, inorganic filler can not be well dispersed in the polymer, poly caprolactone dispersant has good dispersion effect, can enhance the two phase interface binding force.The scale of production to be speedFrom the point of view of the global distribution of caprolactone capacity, the current production enterprises mainly concentrated in the UK, Japan and the United States of America, large production capacity of equipment, and the industry chain has become more mature. Baling Company 10000 tons / polycaprolactone industrial device tons of construction, will fill the gaps without large-scale caprolactone unit, and meet the needs of the Chinese market, the formation and development of domestic caprolactone industry chain to play a positive role in the.From the present situation of production technology, to carry out crystallization technology, reduce the PCL in the production process of polymerization technology and oligomers of new process energy consumption, the development of green environmental protection, is still the focus of the next few years the industry research.From the application point of view, the development and application of polycaprolactone polyurethane is more mature, and domestic in this field is still in its infancy, industry experts suggested that the domestic production of polyurethane business develop polycaprolactone polyurethane.