Black silane primers for improving the adhesion of adhesive tapes on glass surfaces

A primer and silane technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve problems such as being unsuitable for improving the adhesion of pressure-sensitive adhesive tapes

Inactive Publication Date: 2014-10-15
TESA SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this primer composition comprising a reactive acrylic resin and a silane is suitable for improving the adhesion of urethane-based sealants or reactive adhesives on glass, it is not at all suitable for improving pressure sensitive adhesive tapes Adhesion on glass

Method used

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  • Black silane primers for improving the adhesion of adhesive tapes on glass surfaces
  • Black silane primers for improving the adhesion of adhesive tapes on glass surfaces
  • Black silane primers for improving the adhesion of adhesive tapes on glass surfaces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0170] Composition of primer:

[0171]

[0172] The primer was tested with a test adhesive tape in the following manner, where the following results were obtained:

[0173]

[0174] K = cohesive rupture rate of the adhesive tape (the percentage refers to the cohesive part), and the non-cohesive part is the adhesive part.

[0175] A 5 μm thick layer of this primer on glass was opaque. The light transmittance in the wavelength range of 300 nm to 650 nm is 0%.

Embodiment 2

[0177] Composition of primer:

[0178]

[0179] The primer was tested using a test adhesive tape in the following manner, wherein the following results were obtained:

[0180]

[0181]

[0182] K = cohesive rupture rate of the adhesive tape (the percentage refers to the cohesive part), and the non-cohesive part is the adhesive part.

[0183] A 10 μm thick layer of this primer on glass was opaque. The light transmittance in the wavelength range of 300 nm to 650 nm is 0%.

Embodiment 3

[0185] Composition of primer:

[0186]

[0187] The primer was tested using a test adhesive tape in the following manner, wherein the following results were obtained:

[0188]

[0189] K = cohesive rupture rate of the adhesive tape (the percentage refers to the cohesive part), and the non-cohesive part is the adhesive part.

[0190] A 5 μm thick layer of this primer on glass was opaque. The light transmittance in the wavelength range of 300 nm to 650 nm is 0%.

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Abstract

The invention relates to a primer, comprising a mixture dissolved or dispersed in one or more solvents, the mixture composed of a copolymer obtained through copolymerization, preferably free-radical copolymerization, of vinylcaprolactam and / or vinylpyrrolidone, and one or more of the following monomers: a) an acrylic acid ester of a linear primary alcohol containing 2 to 10 carbon atoms in the alkyl group of the alcohol, b) an acrylic acid ester of a branched, non-cyclic alcohol having 4 to 12 carbon atoms in the alkyl group of the alcohol, c) acrylic acid, one or more organofunctional silanes, a dye or a pigment based on a metal complex or a metal oxide, wherein the metal oxide is of a spinel-type. Such primer provide reliable and excellent adhesion between pressure-sensitive adhesive tapes and hydrophilic surfaces, in particular glass, and ensures at the same time a good coloration of the primer, thereby producing an opaque primer layer.

Description

technical field [0001] The present invention relates to primer compositions that provide good adhesion of adhesive tapes to glass surfaces while at the same time ensuring opaque coloring of the primer layer. Background technique [0002] Primers, commonly referred to as adhesives or adhesion promoters, are widely known commercially or from the technical literature. A review of substances or classes of substances used in primer formulations can be found in J. Bielemann, Paint Additives (1998), Ch. 4.3., pp. 114-129. [0003] Primer compositions are disclosed in several patents; however, only a few publications describe primers for improving the adhesion of tapes. [0004] In document WO2008 / 094721A1 a primer composition for adhesive tape applications based on maleic anhydride-modified polyolefins and organic diamines is proposed, which primer composition is intended to improve adhesion to polyolefin-based materials. Compatibility. [0005] JP2008-156566A discloses a primer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J11/06C09J11/04C08F220/18C08F226/06C08F226/10C09D7/61C09J7/50
CPCC09J133/08C08K5/54C09J139/06C08K3/22C09J139/04C08L39/04C08L39/06
Inventor U.舒曼S.迪茨K.埃尔林曼M.库普斯基T.多拉斯
Owner TESA SE
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