JPS5951907A - Imparting hydrophilicity to surface of polymeric substance - Google Patents

Abstract

PURPOSE:To impart semi-permanent hydrophilicity to the surface of a polymeric substance by a simple method, by grafting a specified monomer onto the surface of the polymeric substance by heating or irradiation with light. CONSTITUTION:In imparting hydrophilicity to the surface of a polymeric substance, a monomer of the formula (wherein R is a 5-18C alkyl, aralkyl or alkylaryl, R1 is ethylene, R2 is propylene or butylene, X is H or CH3, n and m are each 0 or an integer, and n+m=4-100) onto the surface of the polymeric substance by heating or irradiation with light. The compound of the formula is one prepared by condensing (i) a compound obtained by adding ethylene oxide and/or propylene oxide and/or butylene oxide to an alicyclic alcohol or an alkyl- substituted or unsubstituted phenol, with (ii) (meth)acrylic acid or a (meth) acrylate ester.

Description

[Detailed description of the invention] The present invention relates to a method for making the surface of a polymeric substance hydrophilic.

The surface of a polymeric substance is made wood-friendly by using various processing means in order to impart properties such as adhesiveness, wettability, biocompatibility, electrostatic property, and dyeability to the surface.

For example, Lamiho 1 - heat treatment, radiation treatment, plasma treatment, light irradiation treatment, etc. In particular, heat treatment and light irradiation treatments have been extensively researched in the past as extremely interesting subjects, and the monomers used for this process include methylol acrylamide, styrene, acryloni-1-lyl, and chlorine. There are compounds such as sidyl methacrylate, methyl methacrylate, methacrylamide, acrylamide, vinyl-resistant vinyl, and acrylic acid, and extensive research is currently underway with the aim of improving the functionality of polymeric substances.However, In a practical sense, the reality is that the surface of a polymeric material is not suitable, and in many cases it is difficult to reach the target by kneading or (J TOSE i6) coating. /) or 112: 组-CT
, chiru.

The present invention R, :, is l! 'l + molecule - substance 1g'7 surface, -, '1'>l; permanent parent no (・1'1 addition 1, and 11; ++ iJ electrical protection, plaster treatment, fΦ' l
1,000 Tsuma-j: Ti long surface graph 1- About processing 4.
, 9 meaning (il [Ultimate, 8X, I↓, Extremely superior, 1
We have reached the present invention, which has been developed to improve the monomer's performance, and how to treat it (4).

Brother hitting 1-. , expensive) 1′ thing! rT ha face #parent 4 f's
``1 luni 1tzu'H'i L+.

General formula % formula %: (() In formula 71, 1: 5= (di 11 alkyl, aralkyl or alkylaryl group, R)
is 2 I ytylene group, 1 2 is hupa [1 pyrene, or rim+/y'3,

+1'l beam or integer, and ++ 10m = 'I to 100C 1,) Heating the monomer shown as '1, ν characteristic) The surface of a polymeric substance is made water-based.

In the present invention, (]- is represented by the general formula (1).
Compounds include alcohols such as amyl alcohol, octyl alcohol, noryl alcohol, and stearyl alcohol; ” - Les or Fresols, S +:! c-phthylphenol,
Alkyl 1-substituted phenols or unsubstituted phenols such as nonylphenol can be used for conversion to ethyleneoxy 1 and/or propyleneoxy 1-
and/or a compound obtained by adding acrylic acid, methacrylic acid, acrylic ester, or +t staacrylic ester to a compound obtained by adding non-A- to cy-1- to It is.

In addition, in the present invention, the polymer substance is a synthetic polymer compound consisting of -1: and I7, such as polyester, bo1jami1
- from synthetic fibers such as polyacryloni 1-helical,
Polyester resins, polyamide resins, acrylic resins, polystyrene resins, A r3S 4itl resins (all of which refer to molded products and fills aimed at one-piece grains).

If we consider the surface treatment power of the polymeric substance, then what is the aqueous solution of the seven polymers represented by the general formula (1)? 1ν There is a streak 1 no, the surface is coated by a method such as a coach link.
・In the case of UV treatment, l □ (1 to l 80'(two; 31) seconds to 1), 1, in the case of JV (ultraviolet) irradiation, mainly: l t) l) to / 15f) Surface treatment is performed by irradiating Ill 71 with light having the maximum wavelength for 10 seconds to 5 minutes, and then performing 7 (N2'f? - 0 in an ambient atmosphere).

This is a talented, thermal polymerization, and one row is J -A -LL, Z LL, 1 ゜ depression. Ia 5, peracid I 1, zzo (Run J, Dowo Jl, IY Shishi 7 Mello? If
Indeed, again) +6jj ((jl/lc 7 houses J3 go,
It is prudent to coexist with sensitizers such as benzophenone, viasedil, alcohol, and benzalyl peroxide.

Further, after the surface treatment, washing with water or solvent may be performed to wash the polymers on surface 1.

As shown in 1-1 below, the surface of the Takanuko material, which has been surface-treated using an extremely simple method, surprisingly exhibits a particularly thick and suitable hydrophilicity, and has excellent anti-f[, anti-fog]'1 and droplet treatment. The present invention will be described by way of examples.

(Parts and % in Examples represent parts by weight.) Example: Commercially available polyester foam, R 13, was added to 10 (LJ
J191 and this was added to the ++V7i reporting substance (Inch1.1j1 (II'') shown in Table 1) per compound, 4 times '/,;,H,+.

1/1 cup of 5% ice containing 11 sulfuric acid
Fu7 old, from the 1 o'clock bath, it's all day and night wind・)・λ
1F = -Also, 1 for each of the suspected substances listed in Table 1.

Added Pentsuphenone! ; Prepare a % acetic acid aqueous solution and immerse polyester resin 11 in the same solution;
After 1 hour, remove from the bath 1. Example 2 Commercially available Boristi 1 non-resin pellets 1-17υ~181
1℃ [f-le heating (3 minutes), 180℃ for 30 seconds,
1]) Press with the old UX/-, perform cooling press,
A resin plate of J m +n X Iυen+ X 10 cm was molded.

The obtained 5% aqueous solution was treated in the same manner as in Example 1.

After the surface treatment, the surface resistivity of the surface was measured and the results are shown in Table 2.

Table-2 According to Table-2, the present invention example has a low surface resistivity value.
The surface-treated polyester film, which was confirmed to have excellent anti-F electrostatic properties by light irradiation, was immersed in warm water (60°C) for 24 hours, and the contact angle of the film was determined after drying. The results of measuring the surface hardness T41 (value) are shown in Table 13.

Table - :(

Claims (1)

[Claims] When making the surface of a polymeric substance hydrophilic, the general formula % formula % (1) (wherein J (in formula 2) is an alkyl, aralkyl or alkylaryl group of Cs -Cr, 1 (l is Ethylene group, R2 is propylene or butylene group, X is ■4 or CH3- and n. In is O or an integer, and n + m = 4 to 100
It is. 1. A method for making a surface of a polymeric material hydrophilic, which comprises converting a 7-mer represented by the following formula into a monomer on the surface of a polymeric material by heating or irradiation with light.