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Fluoropolymer of fluorinated short chain acrylates or methacrylates and oil and water repellent compositions based thereon

A technology of fluorinated polymers and compositions, applied in textiles and papermaking, coating, fiber treatment, etc., can solve problems such as difficult to exclude low molecular weight compounds

Inactive Publication Date: 2006-08-09
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even though this compound can be polymerized into macromolecules and then used in fluorochemical compositions, it is found difficult to exclude residual low molecular weight compounds with fluorinated long chain alkyl groups

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4 and comparative example C-1 and C-2

[0131] In Examples 1 to 4, as shown in Table 5, ISANE of fluorochemical copolymer FC-4 to FC-7 was coated by dip coating TM IP-176 solution treats several substrates to achieve 0.3% SOF. Comparative Examples C-1 and C-2 were obtained by treating the substrate with comparative fluorinated polymers C-FC-1 and C-FC-2. The treated substrate was dried at 60°C for 30 minutes and ironed at 150°C for 15 seconds. The OR and SR results are listed in Table 5.

[0132] Performance

[0133] The results show that the treated substrate has a good level of oil and water repellency, at least acceptable in some applications. Comparing C-1 with Ex1~4, it can be seen that the oil repellency can be improved by reducing the molecular weight of the fluorinated polymer.

Embodiment 5～8

[0135] In Examples 5-8, as shown in Table 6, ISANE with fluorinated polymer was coated by dip TM IP-175 solution treated the substrate to obtain 0.3% SOF. Comparative Example C-3 was prepared using a long-chain fluoroalkyl acrylate polymer. After treatment, the substrate was dried at 60°C for 30 minutes and ironed at 150°C for 15 seconds. The repelling properties are listed in Table 6.

[0136] Performance

[0137] It can be seen from the results that the substrate treated with MeFBSEMA / ODMA copolymer with monomer range of 70 / 30~77.5 / 22.5 has a good overall performance level, and the best performance of MeFBSEMA / ODMA monomer range is 75 / 25 and 77.5 / 22.5. Surprisingly, the substrates treated with low molecular weight short-chain fluoroalkyl (meth)acrylate copolymers were in the same range as the substrates treated with high molecular weight long-chain fluoroalkyl acrylate copolymers.

Embodiment 9～12

[0139] In Examples 9-12, as shown in Table 7, ISANE of fluorochemical copolymers FC-6 and FC-7 was used by dip coating (0.3% SOF) TM IP-175 solution and different levels of ethylhexyl titanate (%, as FC solids) were used to treat several substrates. Test the oil and water repellency of the treated substrate. The results are listed in Table 7.

[0140] Performance

[0141] The results show that by using hydrocarbon extenders, the oil and dynamic water repellency properties of the substrate treated with the fluorochemical copolymer are improved. High dynamic water repellency can be obtained.

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PUM

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Abstract

The present invention relates to compositions based on a fluoropolymer comprising repeating units derived from (i) one or more fluorinated monomers selected from the group consisting of monomers according to the general formula: Rf-X-OC(O)-C(R)=CH2 wherein Rf represents a perfluorinated aliphatic group having 3 or 4 carbon atoms, X is an organic divalent linking group and R represents hydrogen or a lower alkyl group having 1 to 4 carbon atoms; and (u) one or more non-fluorinated comonomers. The fluoropolymer has a weight average molecular weight between 3000 and 55000. The compositions may be solvent born or aqueous born and are particularly useful to provide good oil- and / or water repellency properties to the substrate.

Description

1. Field of Invention [0001] The present invention relates to fluorinated short-chain alkyl acrylate and / or methacrylate fluorinated polymers. In particular, the present invention relates to a composition comprising such a fluorinated polymer, and also relates to treating a substrate (such as a textile) with such a fluorinated polymer so that the substrate has repellent properties. 2. Background of the invention [0002] Compositions for providing oil and water repellency to substrates, particularly fibrous substrates (such as textiles), have long been known in the art. It is well known that fluorochemical compounds are highly effective in imparting oil and water repellency to substrates, especially textile substrates. Commercially available fluorochemical compositions can be applied at a lower level, and generally provide effective oil and water repellency at lower levels. This high efficiency is not only due to the cost of the fluorine chemical compound, but also to ensure the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/24C08L27/00C08F259/08C08L51/00D06M15/00C08F2/00C09D151/00
CPCC08F259/08C08L51/003D06M15/248D06M15/277C08L2666/02C08F220/24C08F259/00C08L51/00
Inventor 弗兰斯·A·奥得纳特皮埃尔·J·范德埃尔斯特多米尼克·G·罗利
Owner 3M INNOVATIVE PROPERTIES CO
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