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Fluorine efficient finishes for textiles

A technology for fabrics, copolymers, applied in fiber processing, textiles and papermaking, fibers repelling liquids, etc., that can solve problems such as fluorination efficiency that is not disclosed or implied

Inactive Publication Date: 2009-04-08
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not disclose or imply an increase in fluorination efficiency

Method used

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  • Fluorine efficient finishes for textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] First, (a) 219.4g has the formula: CF 3 CF 2 (CF 2 ) x C 2 h 4 OC(O)-C(H)=CH 2 The fluorine-containing monomers, wherein x=6, 8, 10, 12, 14, 16 and 18, each relative amount is about 3%, 50%, 31%, 10%, 3%, 2% and 1%, so The monomers have a weight average molecular weight of 569; (b) 60.1 g octadecyl methacrylate; (c) 3 g (2 parts by weight) 2-hydroxyethyl methacrylate; (d) 5.7 g poly(oxyethylene) 7 methacrylate; (e) 5.7 g N-methylol-acrylamide; 1.5 g lauryl mercaptan, 40 g Dowanol DPMA (dipropylene glycol methyl ether acetate) (Dow Chemical, Midland, MI), 28 g Tergitol 15-S-20 (UnionCarbide, Danbury, CT), 14g Arquad 16 / 29 (Akzo-Nobel, McCook, IL) and 619.5g water were emulsified, then added to the tank equipped with stirrer, thermocouple thermometer and dry ice or water condenser in a four-necked flask. Next, (f) 6 g of vinylidene chloride was added to the emulsion. The feed was purged with nitrogen for 30 minutes at 40°C. Then, 1.6 g of "VAZO" 52WSP (E.I. du P...

Embodiment 2

[0093] The procedure of Example 1 was followed except that Ethoquad 18 / 25 (Akzo-Nobel, McCook, IL) was used as the surfactant.

Embodiment 3

[0103] The fabric was treated with the polymer emulsion prepared in Example 1 with blocked isocyanate (0.15% owb) and softener (0.04% owb) at 0.65% based on bath weight (owb). The fabric repellency test was performed using the test method described above and retested after several wash cycles. The results are shown in Table 5 below.

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Abstract

An improved emulsion polymerization process for producing an oil and water repellent finish for textiles wherein the improvement comprises polymerization in an aqueous solution containing 0.1 to 4.9% by weight of dipropylene glycol monomethyl ether acetate or propylene glycol diacetate relative to water is disclosed.

Description

technical field [0001] The present invention relates to a composition for imparting highly durable oil- and water-repellent finishes to fabrics and a process for preparing aqueous emulsion compositions of fluorochemical (meth)acrylate copolymers in which the fluorine of the fluorochemical treatment is increased efficiency. "Fluorination efficiency" means the ability to obtain the desired fabric repellency using a minimum amount of fluoride. In all cases of the present invention, the term "(meth)acrylate" is used to denote acrylates or methacrylates or mixtures thereof. Background of the invention [0002] Fluoropolymer compositions useful as fabric treatments typically contain pendant perfluoroalkyl groups of three or more carbon atoms which provide oil and water repellency when the composition is applied to a fabric surface. [0003] Japanese Patent No. 07179528 discloses a perfluoroalkyl acrylate polymer emulsion prepared by polymerization in an aqueous solution containi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/24C08F220/18D06M15/277D06M15/263D06M15/27
CPCC08F220/24D06M15/27D06M15/277D06M2200/12D06M2200/11C08F2/22C08F220/18C08F220/20C08F220/56C08F220/1818C08F222/102D06M15/29
Inventor J·G·弗兰蔡纳
Owner EI DU PONT DE NEMOURS & CO
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