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Adhesive film, production method of shaped body

一种粘合剂膜、粘合剂层的技术，应用在粘合剂加热的粘合方法、粘合剂类型、酯共聚物粘合剂等方向，能够解决热粘附性能/热保持力存在问题、不能即刻赋予足够高粘附性能等问题，达到满足耐热性的效果

Active Publication Date: 2010-07-14
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a sufficiently high adhesion performance cannot be imparted immediately after adhesion, and there are problems in thermal adhesion performance / heat retention

Method used

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  • Adhesive film, production method of shaped body
  • Adhesive film, production method of shaped body
  • Adhesive film, production method of shaped body

Examples

Experimental program
Comparison scheme
Effect test

example

[0080] raw material

[0081] BA: n-butyl acrylate (manufactured by Mitsubishi Chemical Co., Ltd.)

[0082] 2EHA: 2-ethylhexyl acrylate (AEH, manufactured by Nippon Shokubai Co.)

[0083] IOA: Isooctyl acrylate (prepared from 3M)

[0084] Iso-BA: isobutyl acrylate (manufactured by Mitsubishi Chemical Co., Ltd.)

[0085] AA: Acrylic acid (manufactured by Toagosei Co., Ltd.)

[0086] V-65: Azobis(-2,4-dimethylvaleronitrile) (provided by Wako Pure Chemical Industries Co., Ltd.

[0087] preparation)

[0088] MMA: methyl methacrylate (Acryester M, manufactured by Mitsubishi Rayon Co., Ltd.)

[0089] BMA: n-butyl methacrylate (Acryester B, manufactured by Mitsubishi Rayon Co., Ltd.)

[0090] CHMA: Cyclohexyl methacrylate (Acryester CH, manufactured by Mitsubishi Rayon Co., Ltd.)

[0091] DM: Dimethylaminoethyl methacrylate (Acryester DM, available from Mitsubishi Rayon

[0092] Co., Ltd.)

[0093] DMAPAA: N,N-Dimethylaminopropylacrylamide (DMAPAA, manufac...

preparation example

[0126] Table 2

[0127] Table 2: Preparation examples of amino group-containing acrylic polymers

[0128]

polymer

combination

(pbw = parts by weight)

Amino groups in polymers

Content (mol%)

Tg

(℃)

Weight average molecular weight

(Mw)

B-1

MMA / DM (95:5pbw)

3.2

110

120,000

B-2

MMA / DM (94:6pbw)

3.9

110

120,000

B-3

MMA / BMA / DM (60:34:6pbw)

4.4

91

96,000

B-4

BMA / DM (94:6pbw)

5.5

61

130,000

B-5

MMA / BMA / DM (20:74:6pbw)

5.0

72

91,000

[0129]

polymer

combination

(pbw = parts by weight)

Amino groups in polymers

Content (mol%)

Tg

(℃)

Weight average molecular weight

(Mw)

B-6

CHMA / DM (94:6pbw)

6.4

80

120,000

B-7

MMA / BMA / DM (60:28:12pbw)

8.8

94

89,000

B...

example 1 and example 13 to 16

[0143] Carboxyl group-containing polymer A-4 (Tg: -21°C, carboxyl group content: 10.2 mol%) was mixed with each of amino group-containing polymers B-2, B-7 and B-8, and as a result, it was possible to mix Properties were good (the phrase "mixability is good" means that when the film-like adhesive layer was observed with eyes after coating and drying the adhesive on the liner, it provided a state with transparency). Sufficiently high adhesive force is exerted at 25°C as well as 100°C, and thermal adhesion performance / heat retention is excellent. Therefore, even when the adhesive film was formed by heating at 110° C. and aging for 168 hours, no slippage and separation were observed at the edges.

[0144] When the amino group content is 3.5 to 11.0 mol%, miscibility with carboxyl group-containing polymers is good, and excellent heat resistance and adhesive properties are imparted.

[0145] Regarding the upper limit of the amino group content, those having an amino group content ...

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Abstract

An adhesive film comprising a substrate and an adhesive layer on said substrate, said adhesive layer comprising: (A) a carboxyl group-containing (meth)acrylate polymer having a glass transition temperature (Tg) of 25 C or lower, said carboxyl group-containing (meth)acrylate polymer having a percent number of repeating units of 4.0 to 25% based on the total number of repeating units of the (meth)acrylate polymer; and (B) an amino group-containing (meth)acrylate polymer having a glass transition temperature (Tg) of 75 C or higher, said amino group-containing (meth)acrylate polymer having a percent number of amino group-containing repeating units of 3.5 to 15% based on the total number of repeating units of the (meth)acrylate polymer, wherein the ratio by weight of said component (A) to said component (B) is from 62:38 to 75:25.

Description

technical field [0001] The present invention relates to an adhesive film, a method for producing a shaped body using the adhesive film, and the shaped body obtained. More specifically, the present invention provides an adhesive film having excellent adhesive properties at high temperatures, a method for producing a shaped body using the adhesive film, and a shaped body obtained thereby. Background technique [0002] Insert molding is used as a method of decorating the surface of a cubic structure such as a three-dimensionally shaped substrate, but it must prepare a mold for each product and the method is not suitable for handling different products. [0003] A method of adhering a decorative or protective film to a cubic structure such as a three-dimensionally shaped substrate can be easily handled for different products and is advantageous. In order to successfully and neatly adhere the film to a cubic structure such as a three-dimensionally shaped substrate, the film is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02
CPCC09J5/06C09J7/0217C09J2433/00C09J7/385Y10T428/2848Y10T428/2887C09J7/22C09J7/40C09J133/04C09J2203/00C09J2301/50C09J2301/40C09J2301/312C09J2301/302
Inventor 高松赖信若松宏树
Owner 3M INNOVATIVE PROPERTIES CO
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