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58results about How to "Strong color fixing ability" patented technology

Preparation method of ceramic white salix integra strips

The invention discloses a preparation method of ceramic white salix integra strips. The preparation method includes the following operation steps that (1) salix integra is subjected to natural dryingtreatment for 5-7 days after being harvested in autumn, then salix integra strips are put into a soaking solution, after the soaking solution is boiled, soft-fire boiling is continued for 30-40 min, and then the salix integra strips are taken out and peeled; (2) when dried till the water content is 7-9%, the peeled salix integra strips are put into a color changing solution, soaked for 3-4 h, thentaken out, and put into a drying oven to be dried till the water content is 12-16%; and (3) a color fixing solution is evenly sprayed on the surfaces of the salix integra strips treated in the step (2), and after 3-4 h, the salix integra strips are put into the drying oven to be dried, so that the ceramic white salix integra strips are obtained. The prepared salix integra strips have the color ofceramic white, so that the texture of manufactured wicker products is effectively improved, and the ornamental value of the products is increased; and meanwhile, the color fixing performance of the ceramic white is high, and a color fading phenomenon is not prone to occurring in the using process.
Owner:阜南县大喜柳编工艺品有限公司

Preparation method of reactive dye blue

The invention relates to a reactive dye blue preparation method, which comprises: carrying out a diazo reaction on a compound represented by a formula I under the action of nitrous acid to obtain a first intermediate; carrying out an acid coupling reaction on the first intermediate and a compound shown as a formula II to obtain a second intermediate; carrying out a primary condensation reaction onthe compound shown in the formula III and the compound shown in the formula IV to obtain a primary condensation product; carrying out a secondary condensation reaction on the primary condensation product and a compound shown as a formula V to obtain a secondary condensation product; carrying out a diazo reaction on the secondary condensation product under the action of nitrous acid to obtain a third intermediate; carrying out an alkali coupling reaction on the second intermediate and the third intermediate to obtain a fourth intermediate; carrying out a condensation reaction on the fourth intermediate and a compound shown in the formula VI three times to obtain the reactive dye blue, wherein the reactive dye blue has high reactivity and good color fixing and dyeing capacity, can be used in cooperation with disperse dyes, dyes polyester cotton products at the temperature higher than 100 DEG C at the same time, and achieves the one-bath dyeing process.
Owner:苏州澳缘盛新材料科技有限公司
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