Preparation method and application of guanidine compound color fixing agent
A technology of guanidine compounds and color-fixing agents, which is applied in the field of preparation of guanidine compounds and color-fixing agents, can solve the problems of failing to meet the 3rd grade standard and not improving the fastness to wet treatment, etc., so as to improve flame retardancy Good performance and color fixing performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0052] The preparation process of dyed cotton cloth is as follows:
[0053] Reactive bright orange K-GN staining
[0054] Preparation of reactive bright orange K-GN dye liquor → bleached cotton fabrics are dyed at 60 ℃ → add sodium chloride after 15 minutes → after another 15 minutes, make the dye bath temperature reach 90 ℃ and add anhydrous sodium carbonate → cool to room temperature, soap , washed and dried.
[0055] Direct pink RB staining
[0056] Preparation of direct pink RB dye liquor → bleached cotton fabrics at 40 ℃ dyeing → after 15 minutes, the dye bath was heated to 95 ℃ → 10 minutes, half of sodium chloride was added → after another 10 minutes, the other half of sodium chloride was added → after 15 minutes, it began to cool → Cool to room temperature, soap, wash and dry.
[0057] Dyeing process prescription
[0058]
Embodiment 1
[0060] Scheme principle
[0061]
[0062] (R stands for chitosan molecule)
[0063] Specific steps
[0064] ①Weigh a certain amount of chitosan (5~10g) and dissolve it in 0.1mol / L hydrochloric acid solution, stir with a magnetic stirrer at room temperature for about 30min, and prepare a chitosan hydrochloride solution of about 200ml ,like figure 1 ;
[0065] ②Add a quantitative amount of dicyandiamide (5× the amount of chitosan amino substances, in which 1 mol of chitosan has 1 mol of amino groups) into the chitosan hydrochloride solution, and adjust pH=2 with 1 mol / L hydrochloric acid solution about (the amount of hydrochloric acid depends on the quality of chitosan, generally between 50 and 80ml), such as figure 2 ;
[0066] 3. Pour the above mixed solution into a three-necked flask with a capacity of 500ml, and after setting up the experimental device, put the flask into an oil bath for stirring, and the reflux reaction time is about 90min;
[0067] ④ After the refl...
Embodiment 2
[0073] Scheme principle
[0074]
[0075] Specific steps
[0076] ①In a 250ml beaker, add 0.3mol phosphoric acid with a concentration of 85%, and add distilled water to dilute to 200mL;
[0077] ②Weigh 0.3 mol of guanidine carbonate and add it to the above solution in two times, keep stirring (gas will be released during the period), when the first batch of added guanidine carbonate produces reduced and stable bubbles, then add the second batch;
[0078] ③Put the beaker into a constant temperature water bath, heat it to 50°C, and react at a constant temperature for about 30 minutes;
[0079] ④Using a rotary evaporator, evaporating and concentrating at 80 °C, then cooling and crystallization, and purifying by suction filtration (or the mixed solution after the reaction can also be directly regarded as a solid color finishing solution, such as Figure 5 );
[0080] ⑤ At 110 °C, vacuum drying and crystallization for about 2 hours to obtain a colorless target product, such a...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More - R&D
- Intellectual Property
- Life Sciences
- Materials
- Tech Scout
- Unparalleled Data Quality
- Higher Quality Content
- 60% Fewer Hallucinations
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com