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Pre-adhesive reaction mixtures and acrylic microsphere adhesives comprising pre-adhesive reaction mixtures

A technology of reaction mixture and adhesive, applied in adhesive types, ester copolymer adhesives, non-polymer organic compound adhesives, etc., can solve problems such as inaccurate paint lines

Pending Publication Date: 2022-05-13
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Depending on factors such as how well the masking article is applied to the surface, the surface free energy, and the texture of the surface to which the masking article is applied, the paint can flow over the edges of the masking article and into the mask Specific areas under the artifact, resulting in imprecise paint lines

Method used

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  • Pre-adhesive reaction mixtures and acrylic microsphere adhesives comprising pre-adhesive reaction mixtures
  • Pre-adhesive reaction mixtures and acrylic microsphere adhesives comprising pre-adhesive reaction mixtures
  • Pre-adhesive reaction mixtures and acrylic microsphere adhesives comprising pre-adhesive reaction mixtures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0142] Example 1: Preparation of a microsphere binder ("MSA") A1-A8 and a comparative example CE1-CE3

[0143] Fill THE STEPANOL AMV, HITENOL BC1025, CYANAMER N300, and water into a 500 mL resin flask (4" diameter) as shown in Table 2 to provide the aqueous phase. In separate flasks, the oil phase is prepared by mixing C12 acrylate, IBOA, LA, EHA, IOA and VAZO52 in the amounts shown in Table 2. After complete mixing with a TEFLON-coated magnetic stirring rod, the oil phase is added to the aqueous phase at once. An overhead stirrer equipped with a glass trailing edge stirring rod is used to mix two phases at the rate disclosed in Table 3. During agitation, degass the multiphase mixture by bubbling with nitrogen for 30 min. Heat the mixture to 60 °C after degassing. Peak temperatures during exothermic periods typically reach up to 75°C. The mixture was cooled to 60 ° C and then maintained at this temperature for 8 hours. The mixture was cooled to room temperature, and mixed as desc...

Embodiment 2

[0148] Example 2: Preparation of the compound formulation F1-F8 and the comparative compounding formulation CEF1-CEF3

[0149]Stir the heterogeneous MSA binder mixtures A1-A8 and CE1-CE2 to disperse the particles before use. Add the stirred MSA adhesive mixture (180g) to a 400mL HDPE bottle. Binder latex (20 g, approximately 50% solid in water) was added to the MSA binder mixture, followed by ACRYSOL ASE-60 (2 g). Mix the solution on a tank roller for about 5 min, followed by the addition of ammonia water (1 mL, 10% aqueous solution). Roll the solution on a tank roller at 10 rpm-30 rpm for at least 12 h at room temperature before coating. The compound formulation is shown in Table 4.

[0150] Table 4: Compounding preparations

[0151]

[0152] Table 6: Rheological characteristics

[0153] preparation T g (℃)

G', 1rad / s (kPa) at 25 °C F1 -42 22.2 F2 -42 21.4 F3 NA NA F4 NA NA F5 -32 27.0 F6 NA NA F7 -39 21.6 F8 NA NA ...

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PUM

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Abstract

The present invention proposes a pressure sensitive adhesive composition containing polymeric microspheres having an average particle size of from 20 [mu] m to 100 [mu] m, which polymeric microspheres are synthesized using the disclosed suspension polymerization technique and comprise at least three structural isomers of a secondary (meth) acrylate of formula (I), wherein R1 and R2 are each independently H or a C1 to C10 saturated linear alkyl group, the sum of the number of carbons in R1 and R2 is from 7 to 18, inclusive, and R3 is H or CH3. The disclosed pressure sensitive adhesive composition can be used in a mask article to provide retention to a painted surface, provide clear paint lines on a painted surface, provide low surface energy adhesion to a painted surface, and provide good lossless removal from a painted surface.

Description

Background [0001] When applying a surface coating such as paint or dye to the surface, care must be taken so that the paint does not stick to the surface adjacent to the surface to be painted. This can be achieved by carefully painting the surface, or by covering the area around the surface to be painted such as mask strip and adhesive mask sheet mask article is typically used to protect the area adjacent to the surface being painted. When using such a mask article, it is generally expected that the paint does not flow through the dividing line defined by the edge of the mask article. Thus, the mask article will be painted between the painted surface and the unpainted surface to generate a paint line, the paint line is smooth and continuous and exactly match the user's expected line. [0002] Depending on a number of factors, such as the degree of goodness of the masked article applied to the surface, the surface free energy and the texture of the surface to which the masked arti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/00C09D133/08C09J133/08C08F220/18
CPCC09J4/00C09D133/08C09J133/08C08F220/1812C08F220/1811C08L33/08C09J7/38C09J2301/408C09J2301/302C09J11/08C09J133/10
Inventor 迈克尔·J·马赫布拉德利·S·福尼罗斯林恩·坎波韦德英泰克·李
Owner 3M INNOVATIVE PROPERTIES CO