Overview
Alkyl Ketene Dimer (AKD) is a synthetic chemical compound primarily used in the paper manufacturing industry. It acts as a sizing agent, imparting water resistance to paper products by forming a hydrophobic layer on cellulose fibers. AKD is derived from fatty acids and is known for its stability and efficiency in industrial applications. First introduced in the mid-20th century, AKD has become a standard in paper production due to its ability to enhance paper quality without compromising recyclability. Its molecular structure allows it to react with hydroxyl groups on cellulose, creating a durable bond that repels water.
Physical and Chemical Properties
AKD is a waxy solid at room temperature, typically appearing white to pale yellow. It has a low melting point, ranging between 40-50°C, making it easy to handle in industrial processes. The compound is insoluble in water but dissolves readily in organic solvents like acetone and toluene. Chemically, AKD is reactive towards hydroxyl groups, which is why it bonds effectively with cellulose in paper. Its hydrophobic nature ensures that treated paper resists water absorption, a critical property for packaging and printing applications. The compound is stable under normal storage conditions but may degrade if exposed to excessive heat or moisture.
Main Applications
The primary use of AKD is in the paper industry, where it serves as a sizing agent. It is applied during the papermaking process to improve the water resistance of products like packaging materials, labels, and printing paper. AKD-treated paper maintains its strength and integrity even in humid conditions. Beyond paper, AKD is occasionally used in textiles and coatings to provide water repellency. Its compatibility with cellulose-based materials makes it a versatile additive, though paper production remains its dominant application. The compound is favored for its environmental benefits, as it does not interfere with paper recycling processes.
Safety and Storage
AKD is generally considered safe when handled properly, but precautions are necessary to avoid health risks. Direct contact with skin or eyes can cause irritation, and inhalation of dust or vapors should be avoided. Personal protective equipment (PPE), including gloves and goggles, is recommended during handling. Storage conditions are critical to maintaining AKD's stability. It should be kept in a cool, dry environment, away from direct sunlight and moisture. Containers must be tightly sealed to prevent contamination or degradation. In case of spills, absorbent materials like sand or vermiculite should be used, followed by proper disposal according to local regulations.
B2B Procurement Guide
When procuring AKD, B2B buyers should prioritize suppliers with verified certifications and a track record of quality. Key factors to consider include CAS number verification, purity levels (typically 95-98%), and packaging options (e.g., bags, drums). Price negotiations often depend on order volume, with bulk purchases offering cost advantages. Buyers should also inquire about logistics, such as lead times and shipping conditions, to ensure the product arrives in optimal condition. Sampling and lab testing are recommended for first-time purchases to confirm suitability for specific applications.
Related Manufacturers
- 主营：Elisa试剂盒、兽药残留试剂盒、真菌毒素试剂盒、胶体金检测卡、荧光定量检测、兽药残留检测卡、农药残留检测卡、化妆品检测胶体金、保健品检测卡、谷物饲料荧光定量检测、粮油面粉荧光定量检测、微生物检测、沙门氏菌检测、黄曲霉B1、农药残留试剂盒、理化类食品安全快检试剂、瘦肉精三联卡
- 主营：醋酸镍、磷酸氢、氟化锶、醋酸锰、磷酸三钾、粉末分析、化学试剂、白色晶体、分析试剂、草酸铜、无色无味、透明结晶、磷酸三铵、氯化亚铁、白色粉末、无色结晶、通风干燥、粉末干燥、绿色结晶、白色结晶、无水氯化钙、紫红色结晶、磷酸二氢钠、磷酸二氢钾、无定型粉末
- 主营：离子液体、5-二甲基吡唑、咪唑、烷基烯酮二聚体、催化剂、阻燃剂、正丁醇锆、四氟硼酸锂、香兰基丁醚、氟化物、全氟辛基三甲氧基硅烷、丙酮肟、双酚E型氰酸酯、叔丁基乙烯基醚、钯碳催化剂、钛硅分子筛、硫酸烟酰苯胺、丙酮缩氨基硫脲
- 主营：akd蜡粉、138树脂、黑松香、烷基烯酮二聚体、咪唑烷酮、合成材料、氢氧化镧、环氧树脂、无水乙醇、制造树脂、环烷酸铅、树脂色号、偏硼酸钙、十八烷酸、三十烷醇、古马隆树脂、聚醋酸乙烯酯、偏钒酸钠、氧化铈、氧化锆、酚醛树脂
- 主营：乙酸龙脑酯、聚苯乙烯磺酸钠、乙基黄原酸钾、烷基烯酮二聚体、2-十一酮
- 主营：己二酸二酰肼、2-甲基四氢噻吩-3-酮、3-甲基-2-丁硫醇、丙酸氯倍原料、亚乙基硫脲、2-辛二醇、三氟甲基磺酸铋、醋酸钯
- 主营：架桥剂、YW100 锂萃取剂、端羧基液体丁腈橡胶、烷基烯酮二聚体、10-羟基癸酸、苯乙烯磷酸、肉豆蔻酸镁、硬脂酸钴、全氟三丁胺、乙烯基磷酸二乙酯、磷酸锰铁锂、β-磷酸三钙、十一烯酸、钨酸铝、1-乙炔基环已醇、间二异丙苯、锂硅合金、溴甲酚绿、生物活性玻璃、溴代海因树脂颗粒、红铝、龙涎酮、原丁酸三甲酯
- 主营：表面施胶剂、苯丙表胶、乳液施胶剂、烷基烯酮二聚体、中性施胶剂、浆内施胶剂、AKD施胶剂、高分子乳化剂、固体表面施胶剂、纸塑模具防水剂、蜡粉、蜡乳液、松香胶、湿强解离剂、抗掉毛掉粉剂、纤维增强剂、干强剂、抗水剂、挺硬剂、拉力增强剂、增白剂、聚丙烯酰胺树脂、涂布润滑剂、涂布分散剂、丁苯乳液
- 主营：有机原料、中间体、香精香料、催化剂、有机硅、表面活性剂
- 主营：杜仲素、对位酯、丙烯酸酯、烷基烯酮二聚体、二氧化硫脲、乙基麦芽酚、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：表面施胶剂、苯丙表胶、乳液施胶剂、烷基烯酮二聚体、中性施胶剂、浆内施胶剂、AKD施胶剂、高分子乳化剂、固体表面施胶剂、纸塑模具防水剂、蜡粉、蜡乳液、松香胶、湿强剂、湿强解离剂、抗掉毛掉粉剂、纤维增强剂、干强剂、抗水剂、挺硬剂、拉力增强剂、增白剂、涂布润滑剂、涂布分散剂、丁苯胶乳
- 主营：侧柏叶油、当归提取物、益智仁精油、烷基烯酮二聚体、羟丙基硅油、侧柏叶精油、茴香提取液、墨旱莲提取物、接骨木提取液
- 主营：甘氨酸、水苏糖、阻燃剂、烷基烯酮二聚体、硫酸锌、硫酸锆、硫酸锂、硫酸锶、硫酸锰、铝酸锌、1680-21-3、牛磺酸、褪黑素、磷酸铁、丙酸铵、苏云金、碳酸镁、麝香酮、肉桂醛、磷酸铝、王浆酸、椰油胺、赖氨酸、增塑剂、浸膏粉、乙氧基
- 主营：氯化氢乙醇、二苯基硅二醇、甲基磺酸铋、烷基烯酮二聚体、阻燃剂DDP、萃取剂、HTPB、防老剂
- 主营：硫酸烟酰苯胺、矮壮素、离子液体、烷基烯酮二聚体、蓖麻油酸、椰油酰氯、4-滴钠盐、甘油磷酸酯、咪唑、亚麻酸乙酯、菜籽油甲酯、氟甲基磺、DL-泛酰酸内酯、聚丙烯酸树脂IV、海因环氧树脂、2-辛烯基琥珀酸酐、4-二羟基蒽醌隐、5-二甲基吡唑
- 主营：防老剂、香精香料、乳化剂、烷基烯酮二聚体、壳聚糖