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服务热线 Thalidomide used poly fiber is nylon (adipic acid and hexamethylene diamine polymer), there is a certain hydrophilic. Can use the non-ionic hydrophobic fluorescent brightener dispersion, and available water-soluble anionic fluorescent whitening agent, nylon whitening bleach or insurance often associated with oxidant reduction bleaching powder together. Therefore, we must anti-oxidant and reductant. After the use of steam because of bleaching and acid treatment, it must heat and acid.
With three nitrogen miles stilbene fluorescent brighteners, such as CI Fluorescent Brightener 40 (BlankophorG) or CI Fluorescent Brightener 191 (Blank call horCC), except with the performance, but also with the stability of chlorine bleaching.
Hydrophobic fluorescent brightener include coumarin class of CI fluorescent brightener 52 (TinopalSWN) and TinopalEF (Table 4), l, 3 - diphenyl-mile border Lin class BlanlophorCA, AD and made fluorescent brightener DCB.
Wool itself is slightly yellow, the former will have to be in the whitening bleaching for dyeing hair products, is also used to make bright color fluorescent whitening agent for brightening treatment. Whitening is generally carried out in an acidic bath, coumarin derivatives such as TinopalSWN (CI fluorescent brightener 52), or adjacent miles Lin derivatives such as TinopalwG (C.1. Fluorescent brightener 54), in acidic conditions Together with the application of hydrogen peroxide, the latter reflection fluorescence wavelength is longer, with green, excellent whitening effect and Fast.
Currently used as a fluorescent brightener cBs-x, which ciah of TinopalcBs an x ??or said uviteXNFw (cI fluorescent brightener 351), the chemical structure of biphenyl disulfonic acid stilbene, a liquid dosage form, miscible with water. Aqueous solution with green fluorescent purple, wool has a high affinity for alkali and hard water instability, intolerance to chlorine bleaching, the fastness is good. Also be used for light-colored wool fabric brightening treatment.
High crystallinity of polyester fiber, is a hydrophobic fiber, required non-ionic hydrophobic fluorescent brightener. Divided into high-temperature dyeing of polyester (130 ℃), hot melt (180 a 210 ℃) and the carrier method. To meet the requirements of heat and spread, generally applicable to small molecular weight fluorescent brightener, heat stability is good. Distributed in various types of fluorescent whitening agent. Such as benzo miles are: CI Fluorescent Brightener 135 (DT), CI Fluorescent Brightener 367 (KCB), C.1. Fluorescent Brightener 185 (EBF), CI fluorescent brightener 184 (OB), CI Fluorescent Brightener 393 (oB a l) and so on. Diphenyl vinyl phenyl cI FWA l99 (ER). Cai phthalate imine are cI FWA 162 (AT) and LcukophorEFR. Take derivatives of the CI Fluorescent Brightener 179 (FluliteXM Mary, etc. There are coumarin, such as BlankophorEBL.
Cellulose molecules have more light-based linear polymer with good water-soluble. Cellulose fiber whitening, general use of both water-soluble fiber has a direct nature of the anionic fluorescent whitening agent. Their relatively large molecular weight, contain sulfonic acid groups on the fiber directly, but the direct result of too uneven whitening, continuous processing (especially cloth or knitted fabric), often using direct low of varieties; intermittent process, often with moderate or high use of direct fluorescent brightener variety; fiber bleaching and whitening of the one-bath process, the ability of chlorine bleach and also requires oxygen bleaching.
Light, such as Princess red, brilliant blue, brilliant purple cotton available fluorescent brighteners brightening. Such as cotton wilt with dark shade of yellow that affect brightness, fluorescent whitening agent VBL treatment can brightening.
