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(meth)acrylic pigmented film, marking film, receptor sheet and method for preparing the same

An acrylic and acrylic technology, applied in the field of acrylic colored film, can solve the problems of migration, insufficient pigment dispersion, difficult compatibility of pigment concentrates, etc.

Inactive Publication Date: 2010-01-06
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, for adding a pigment concentrate containing a pigment and a dispersant to a (meth)acrylic film comprising an acidic group-containing (meth)acrylic polymer and a basic group-containing (meth)acrylic polymer, These references do not include instructions for this
In general, it is difficult to control the compatibility of pigment concentrates in film-forming resins
In addition, since the (meth)acrylic film contains both an acidic polymer and a basic polymer, a film containing an acidic group-containing (meth)acrylic polymer and a basic group-containing (meth)acrylic polymer Compatibility of pigment concentrates in (meth)acrylic films is more difficult to control
Since there are no pigment concentrates that are sufficiently compatible with both polymers, various problems ensue, such as gelation, color separation, insufficient pigment dispersion, migration of dispersants to the film surface, reduced weather resistance, film The printing performance on the surface cannot be kept consistent, etc.

Method used

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  • (meth)acrylic pigmented film, marking film, receptor sheet and method for preparing the same
  • (meth)acrylic pigmented film, marking film, receptor sheet and method for preparing the same

Examples

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example

[0073] The present invention will be described in more detail below based on the examples of the present invention, but the present invention is not limited by the examples.

[0074] 1. Preparation of (meth)acrylic polymer

[0075] 1.1 Acrylic resin 1

[0076] First, 60 parts by weight of methyl methacrylate (MMA), 34 parts by weight of n-butyl methacrylate (BMA) and 6 parts by weight of dimethylaminoethyl methacrylate (DMAEMA) were dissolved in 150 parts by weight in ethyl acetate, and adding 0.6 parts by weight of the polymerization initiator 2,2'-azobis-(2-methylpropionate methyl ester) (manufactured by Wako Pure Chemical Industries, Co., Ltd., After product name V-601), the mixture was allowed to react at 65° C. for 24 hours in a nitrogen atmosphere to prepare an ethyl acetate solution of acrylic resin 1 (solid content: 39%). Its weight average molecular weight (Mw) was 68,000, and its Tg was 63°C. Tg is calculated according to the FOX equation (equation below):

...

example 1

[0105] Pigment Concentrate 2 and Acrylic Resin 1 and Acrylic Resin 2 as film-forming resins were prepared. Next, Pigment Concentrate 2, Acrylic Resin 1 and Acrylic Resin 2 were mixed such that 100 parts by weight of Acrylic Resin 1 (including Acrylic Resin 1 in Pigment Concentrate 2), 100 parts by weight of Acrylic Resin Resinoid 2 and Pigment 1 in 100 parts by weight. With respect to 100 parts by weight of acrylic resin 2, 5 parts by weight of a crosslinking agent (epoxy crosslinking agent manufactured by Soken Chemical Co., Ltd., trade name E-AX, 5% solid content in toluene solution) was added in this mixture. Pigment concentrates have good compatibility with film-forming resins. Compatibility was rated as "good" if no gelation, color separation, or precipitation of the pigment was observed by visual inspection, and "poor" if gelation, color separation, or precipitation of the pigment was observed. The resulting mixture was coated on a 50 μm release-treated polyester film...

example 2

[0117] A (meth)acrylic colored film and a receptor sheet were obtained by the same method as in Example 1 except for the following points. Pigment Concentrate 3, Acrylic Resin 1 and Acrylic Resin 2 were mixed such that 100 parts by weight of Acrylic Resin 1 (including Acrylic Resin 1 in Pigment Concentrate 3), 100 parts by weight of Acrylic Resin 2 and 100 parts by weight of Pigment 2. To this mixture was added 0.5 parts by weight of a bisamide crosslinking agent, which was the same bisamide crosslinking agent used in the pressure-sensitive adhesive of Example 1, relative to 100 parts by weight of the acrylic resin 2 . Compatibility, tensile strength and elongation are shown in Table 2.

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Abstract

The present invention provides a film having a superior pigment dispersibility, and a high tensile strength and elongation characteristics, and a method for preparing such a film. Generally, the application is directed to a meth)acrylic pigmented film comprising a film forming resin. The film forming resin comprises a (meth)acrylic polymer containing a unit derived from a carboxyl group-containing monomer and a (meth)acrylic polymer containing a unit derived from an amino group-containing monomer. The pigmented film additionally comprises a dispersant selected from the group consisting of a (meth)acrylic polymer containing a unit derived from a hydroxyl group-containing monomer and a (meth)acrylic polymer containing a unit derived from an amino group-containing monomer. Also, the pigmented film comprises a pigment concentrate comprising a pigment dispersed in said dispersant.

Description

technical field [0001] The present invention relates to a (meth)acrylic coloring film, a marking film, a receptor sheet and a preparation method thereof. Background technique [0002] In the fields of interior materials for houses and buildings, surface materials for furniture, and interior and exterior surface materials for automobiles, colored films are used, for example, as substrates for marking films or receptor sheets. [0003] Since vinyl chloride resin has a good balance between tensile strength and elongation characteristics, it has been widely used as a film-forming resin in the past. In recent years, however, due to environmental problems associated with vinyl chloride resins, there has been a need to develop alternative resins. Acrylic resin is considered as one of the alternative resins. However, when an acrylic resin is simply processed into a film, the resulting film cannot be used as a base for a marking film or the like because the film is too hard and bri...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J3/20C08L33/06
CPCC08J2333/14C08J3/20C08L33/14C08L33/066Y10T428/2848C08L2666/04C08J5/18C08L33/06
Inventor 阿部秀俊古泽正明高松赖信
Owner 3M INNOVATIVE PROPERTIES CO
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