[EN] SOLUTION COMPRISING A DYE<br/>[FR] SOLUTION COMPRENANT UN COLORANT
申请人:NOURYON CHEMICALS INT BV
公开号:WO2019175040A1
公开(公告)日:2019-09-19
Solution comprising 1-25 wt% of a dye that loses its colour during radical cure and 75-99 wt% of a solvent mixture, said solvent mixture comprising cyclopentanone and dimethylsulphoxide in a weight ratio 60:40 -95:5.
Substituents-triggered modulation of structure and alkali resistance in cyano-based disperse dyes
conjugation of the alkali-resistant stability of dyes. High-performance liquid chromatography (HPLC) was used to monitor the dye hydrolysis behavior, indicating that dyes with strong intramolecular π-π conjugation and bulky benzyl substituents on the n-phenylamine substituent exhibited good alkaline resistance. The hydrolysis processes of cyano disperse dyes under alkaline conditions were consistent with SN2
耐碱分散染料因其在碱性一浴染色过程中的众多优点而引起了人们的极大兴趣。在此,设计并合成了六种氰基分散染料(D1-D6),以2-氨基苯并噻唑或2-氨基-6-硝基苯并噻唑以及N-取代苯胺作为偶联组分,以研究取代基和π的影响-π共轭作用影响染料的耐碱稳定性。采用高效液相色谱(HPLC)监测染料的水解行为,表明具有强分子内π-π共轭作用和n-苯胺取代基上大的苄基取代基的染料表现出良好的耐碱性。氰基分散染料在碱性条件下的水解过程符合S N 2 亲核取代反应,遵循一级反应动力学。此外,在各种碱性条件下用D1-D3对PET织物进行染色,证明D2和D3即使在5 g/L NaOH染浴下也具有良好的染色性能。我们的研究为氰化物分散染料分子结构与耐碱性之间的关系提供了宝贵的见解,为提高此类染料的性能提供了实用指导。