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High-property pulp-shaped fluorescent whitening agent and preparation method thereof

A fluorescent whitening agent, high-performance technology, applied in the field of fluorescent whitening agents, can solve the problems of not involving a single component fluorescent whitening agent, slow dissolution speed, inconvenient use, etc., achieving no heating, fast dissolution speed, Create handy effects

Active Publication Date: 2013-06-26
山西晋光化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN100529244C introduces a storage-stable fluorescent whitening agent formulation and its preparation method, but it involves one of the stilbene bis-triazine fluorescent whitening agents and another stilbene bis-triazine fluorescent whitening agent. Whitening agent or mixed slurry with a stilbene biphenyl optical brightener, not related to the slurry of single component optical brightener C.I. 351
[0005] Domestic research on C.I.351 slurry is less, and the fluorescent whitening agent manufacturers do not currently produce this product, but mainly powder and granular C.I. 351, and powder and granular C.I. 351 is inconvenient to use, dust pollution, Disadvantages of slow dissolution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-performance paste fluorescent whitening agent, comprising the following components in parts by weight:

[0028] 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ -biphenyl 34

[0029] Polyethylene glycol (PEG) 2

[0030] Xanthan gum 0.2

[0031] 1,2 propylene glycol 2

[0032] Defoamer 0.2

[0033] Deionized water 61.6.

[0034] Use above-mentioned each component to prepare the method for high-performance slurry fluorescent whitening agent, comprise the following steps:

[0035] At room temperature of 25°C, first add deionized water into the high-speed beating pot, and then add 62 parts of 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ - The content of biphenyl is 55% undried and crystallized refined fluorescent whitening agent filter cake, stirred for 0.5 hour, and one-third of the amount of defoamer is added when there is foaming;

[0036] In the state of stirring, gradually add protective colloid, after stirring for 20 minutes, add one-third of the amount of defoamer,...

Embodiment 2

[0038] A high-performance paste fluorescent whitening agent, comprising the following components in parts by weight:

[0039] 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ -Biphenyl 20

[0040] Polyethylene glycol (PEG) 2

[0041] Xanthan Gum 2

[0042] Carboxymethylcellulose 2

[0043] Polyvinyl alcohol (PVA) 2

[0044] Ethylene glycol 0.5

[0045] Food defoamer XP 0.01

[0046] Deionized water 50.

[0047] Use above-mentioned each component to prepare the method for high-performance slurry fluorescent whitening agent, comprise the following steps:

[0048] At room temperature of 25°C, first add deionized water into the high-speed beating pot, and then add 32 parts of 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ -The content of biphenyl is 60% undried and crystallized refined optical brightener filter cake, stirred for 0.5 hour, when there is foaming, add 1 / 3 of the amount of defoamer;

[0049] In the state of stirring, gradually add protective colloid, after stirring for 20 ...

Embodiment 3

[0051] A high-performance paste fluorescent whitening agent, comprising the following components in parts by weight:

[0052] 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ -Biphenyl 40

[0053] Polyvinylpyrrolidone (PVP) 0.2

[0054] Diethylene glycol 5

[0055] Food defoamer XP 0.5

[0056] Deionized water 65.

[0057] Use above-mentioned each component to prepare the method for high-performance slurry fluorescent whitening agent, comprise the following steps:

[0058] At room temperature of 25°C, first add deionized water into the high-speed beating pot, and then add 73 parts of 4, 4 ˊ -(2-Sulphonic acid styryl)-1,1 ˊ - The content of biphenyl is 55% undried and crystallized refined fluorescent whitening agent filter cake, stirred for 0.5 hour, and one-third of the amount of defoamer is added when there is foaming;

[0059] In the state of stirring, gradually add protective colloid, after stirring for 20 minutes, add one-third of the amount of defoamer, then add antifreeze a...

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PUM

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Abstract

The invention discloses a high-property pulp-shaped fluorescent whitening agent and a preparation method thereof, and relates to a fluorescent whitening agent used in a high-grade washing industry. The fluorescent whitening agent disclosed by the invention comprises the following components in parts by weight: 20-40 parts of 4,4'-(2-sulfonyl styryl)-1,1'-biphenyl, 0.2-8 parts of colloid protecting agent, 0.5-5 parts of anti-freezing agent, 0.01-0.5 of defoaming agent and 50-70 parts of deionized water. During the preparation, the deionized water is added in a high-speed pulping pot; and then 4,4'-(2-sulfonyl styryl)-1,1'-biphenyl, the defoaming agent and the colloid protecting agent are gradually added under the state of stirring, so as to obtain a finished product. The pulp-shaped fluorescent whitening agent according to the method disclosed by the invention has the advantages that use is convenient, dust pollution is not generated, and dissolution speed is rapid; the content of the active components of the pulp-shaped fluorescent whitening agent is 30%; manufacturing process is convenient; and the pulp-shaped fluorescent whitening agent can be stably placed for two months and has good flowability and a viscosity less than 1000m.pa.s.

Description

technical field [0001] The invention relates to a fluorescent whitening agent used in the high-grade washing industry, in particular to a high-performance slurry fluorescent whitening agent and a preparation method thereof. Background technique [0002] The commercial dosage forms of fluorescent whitening agents are divided into powder, granular, liquid and stable dispersion, among which the stable dispersion is slurry. At present, there are many studies on powdery, granular and liquid fluorescent whitening agents, but less research on paste fluorescent whitening agents (C.I. 351). [0003] Patent CN1194081C and patent CN1296469C respectively introduced a formula of liquid fluorescent whitening agent C.I. 351. The active ingredients (parts by weight) of fluorescent whitening agent CBS are all less than 30%, basically below 25%. question. [0004] Patent CN100529244C introduces a storage-stable fluorescent whitening agent formulation and its preparation method, but it invol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D3/42C11D3/34C11D3/37C11D3/60C11D9/44C11D9/60C11D9/32C11D9/26
Inventor 季东峰刘爱玲
Owner 山西晋光化工有限公司