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Multilayer pressure-sensitive adhesive assembly

A technology of pressure-sensitive adhesives and components, applied in the field of adhesives, pressure-sensitive adhesive compositions and multilayer components, and multilayer components, can solve the key characteristics affecting pressure-sensitive adhesives, reduce stability, Undesirable discoloration and other issues

Active Publication Date: 2020-12-22
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive use of tackifiers can often adversely affect key properties of pressure-sensitive adhesives, such as, for example, shear resistance and cohesive strength, and can raise the glass transition temperature of the corresponding adhesive
In addition, tackifiers can migrate into the substrate to which the adhesive tape is bonded and can cause undesirable discoloration or reduced stability

Method used

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  • Multilayer pressure-sensitive adhesive assembly
  • Multilayer pressure-sensitive adhesive assembly
  • Multilayer pressure-sensitive adhesive assembly

Examples

Experimental program
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Effect test

Embodiment

[0563] The present disclosure is further illustrated by the following examples. These examples are for illustrative purposes only and are not intended to limit the scope of the appended claims.

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Abstract

Provided is an assembly including a first polymeric layer of a first pressure sensitive adhesive (PSA) composition and a second polymeric foam layer of a second PSA composition. The first PSA composition contains at least 60 parts by weight of (meth)acrylate copolymer containing C1-C32 (meth)acrylic acid ester monomer units; 0.1-15 parts by weight of C2-C8 hydroxyalkyl (meth)acrylic acid ester monomer units, based on 100 parts by weight of the total monomers of the (meth)acrylate copolymer; and up to 40 parts by weight of a (meth)acrylate copolymer having a weight average molecular weight above 20,000 Daltons and including (meth)acrylic acid ester monomer units. The second PSA composition contains a first (meth)acrylate copolymer having 0.1-12 wt% of (meth)acrylic acid monomer units, basedon the weight of the first (meth)acrylate copolymer; and a second (meth)acrylate copolymer having 15-40 wt% of (meth)acrylic acid monomer units, based on the weight of the second (meth)acrylate copolymer.

Description

technical field [0001] The present disclosure relates generally to the field of adhesives, and more particularly to the field of pressure sensitive adhesive (PSA) compositions and multilayer assemblies. The present disclosure also relates to methods of adhering a first part to a second part, wherein the first part and the second part comprise thermoplastic organic polymers or thermosetting organic polymers, and to the use of such multilayer assemblies. Background technique [0002] Adhesives have been used for a variety of marking, securing, protecting, sealing and masking purposes. Adhesive tapes generally include a backing or substrate and an adhesive. One type of adhesive that is particularly preferred for many applications is represented by pressure sensitive adhesives. Pressure sensitive adhesives (PSAs) are well known to those of ordinary skill in the art and have certain properties including: (1) strong and permanent tack, (2) adheres with no more than finger pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J5/00C09J5/08C09J133/06
CPCC09J7/10C09J7/385C09J133/066C09J133/08C09J2400/24C09J2433/00C09J2301/1242C09J2301/208C09J4/06C08F265/06C08L33/066C08L33/08C08F220/1808C08F220/1811C08F220/20C08F220/06C08F222/102B32B7/12B32B2266/14B32B2405/00C09J2301/302
Inventor 克劳迪娅·托瑞克斯廷·翁弗豪
Owner 3M INNOVATIVE PROPERTIES CO