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Water and oil repellent using α-chloroacrylate

A water-repellent, oil-repellent, and water-based medium technology, applied in the field of water-repellent and oil-repellent agents, can solve problems such as uneven treatment, reduced performance of treated objects, and reduced washing durability, achieving the effect of maintaining performance and excellent water repellency

Active Publication Date: 2015-12-09
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Under such circumstances, a water-repellent and oil-repellent agent having a perfluoroalkyl group having 6 carbon atoms (meth)acrylate was developed as a monomer component. Compared with the water-repellent and oil-repellent agent with acrylate as the monomer component, not only the water-repellent and oil-repellent properties are reduced, but also the mechanical stability is not enough, and the dispersibility of the aqueous dispersion is poor, which sometimes causes the aggregation and sedimentation of the emulsion particles
As a result, the performance of the treated material deteriorates, and the adhesion of the polymer to the cloth gin (resin bonded roll problem, gumup) causes uneven treatment in the processed cloth, but until now, this problem in water and oil repellent treatment has not been solved (Resin bonded sticky roll problem)
In addition, the decline in washing durability has not yet been resolved

Method used

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  • Water and oil repellent using α-chloroacrylate
  • Water and oil repellent using α-chloroacrylate
  • Water and oil repellent using α-chloroacrylate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0076] The present invention will be described more specifically with reference to Examples (Examples 1 to 10) and Comparative Examples (Comparative Examples 1 to 5), but the present invention is not limited to these.

[0077] Hereinafter, % is % by weight unless otherwise specified.

Synthetic example 1

[0079] Synthesis of Siloxane A:

[0080] Into a three-necked round-bottomed flask equipped with a cooler, upper stirrer and thermocouple were added silanol-terminated polydimethylsiloxane (743g, Mn about 300), mercaptopropylmethyldiethoxysilane (230g) , aminopropylmethyldiethoxysilane (27g), trimethylethoxysilane (39g), barium hydroxide (0.62g) and sodium orthophosphate (0.25g). The reaction mixture was heated to 75°C, maintained at this temperature for 3 hours, and then volatiles were removed for 4 hours at 75°C and a reduced pressure of 200 mbar.

[0081] The physical and structural properties of aminomercaptosiloxane are described below:

[0082]

Embodiment 1

[0084] Add 153.4g CF to a 1L autoclave 3 CF 2 -(CF 2 CF 2 ) n -CH 2 CH 2 OCOC(Cl)=CH 2 (n=2.0), 35.2g octadecyl acrylate, 4.8g glycerol monomethacrylate, 460g pure water, 78.2g tripropylene glycol, 9.8g polyoxyethylene lauryl ether (EO: 20 EO represents the number of vinyl oxide units), 3.9 g of polyoxyethylene isotridecyl ether (EO: 3), 2.0 g of polyoxyethylene oleyl ether (EO: 50), under stirring, at a temperature of 60 °C It was emulsified and dispersed by ultrasonic waves for 15 minutes. After the inside of the autoclave was replaced with nitrogen, 58.8 g of vinyl chloride was press-filled. A solution of 2.4 g of dodecyl mercaptan, 3.3 g of 2,2-azobis(2-amidinopropane) dihydrochloride (hereinafter referred to as V-50) and 20 g of water was added, and the reaction was carried out at 60°C. After 5 hours, an aqueous dispersion of the polymer was obtained. The polymer composition was approximately the same as that of the added monomers.

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Abstract

Provided are water- and oil-repellents which can impart water- and oil-repellency to articles and which exhibit excellent stability in processing and ensure soft hand. Specifically provided are: a water- and oil-repellent which contains as the essential component a fluorine-containing polymer that comprises polymerized units derived from a monomer (a) and polymerized units derived from a monomer (b) and which exhibits excellent stability in processing; and a water- and oil-repellent as described above, wherein the fluorine -containing polymer further contains polymerized units derived from a monomer (c) for imparting improved physical properties (such as tight adhesion, adhesiveness and durability) to articles. The monomer (a) is an a-chloroacrylate monomer that has a C6 perfluoroalkyl group; the monomer (b) is a monomer such as a (meth)acrylate that has a linear hydrocarbon group having 12 to less than 20 carbon atoms and / or a (meth)acrylate that has a cyclic hydrocarbon group; and the monomer (c) is either a copolymerizable monomer except the monomers (a) and (b) or a halogenated olefin.

Description

technical field [0001] The present invention relates to a water and oil repellent agent, which can impart water and oil repellency and processing stability to articles, and can also ensure soft hand feeling. More specifically, it relates to a water and oil repellent agent containing a fluorine-containing copolymer. The product uses α-chloroacrylate having a perfluoroalkyl group with 6 carbon atoms as a constituent monomer. Background technique [0002] It is known that a polymer having a polymerizable compound of a perfluoroalkyl group or a perfluoroalkenyl group and an acrylic group or a methacrylic group can be used as a water-repellent and oil-repellent agent for fabrics, etc., especially by making the polymer The aqueous dispersion obtained by dispersing in an aqueous medium is widely used industrially. [0003] In addition, it is generally known that excellent durability can also be imparted by copolymerizing a chlorine-containing polymerizable compound such as vinyl c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/18C08F220/24D06M15/277
CPCC09K3/18C08F220/24D06M15/263D06M15/277D06M2200/11D06M2200/12C08F220/1818C08F220/282C08F220/1811C08F220/58C08F220/18
Inventor 福森正树山本育男上杉宪正久保田浩治
Owner DAIKIN IND LTD