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Adhesive composed of crosslinkable polyolefin and adhesive bonding resin

A pressure-sensitive adhesive, cross-linked polyolefin technology, applied in the direction of graft polymer adhesives, film/sheet adhesives, adhesive types, etc., can solve the problems of high cost, lining, etc.

Inactive Publication Date: 2011-05-11
TESA SE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone PSAs have good aging and UV stability and good adhesion, especially to low energy surfaces, but are extremely expensive and cannot be lined with standard siliconized liners (or cannot be removed again)

Method used

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  • Adhesive composed of crosslinkable polyolefin and adhesive bonding resin
  • Adhesive composed of crosslinkable polyolefin and adhesive bonding resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] Tafmer A 0550S was grafted with 1 wt% maleic anhydride in the extruder. 25.5 parts by weight of the polymer, 54 parts by weight of Escorez 1310, 20 parts by weight of Ondina 933 and 0.5 parts by weight of Irganox 1726 were mixed in the melt, and the 2 Coat weights were coated on a 25 μm polyester film etched with trichloroacetic acid.

Embodiment 2

[0126] Carry out as Example 1, but also add 1 part by weight of Epicure 925 per 100 parts by weight of binder (polymer and additives).

Embodiment 3

[0128] Infuse 9817 was grafted with 1 wt% maleic anhydride in the extruder. Mix 25.5 parts by weight of the polymer, 50 parts by weight of Escorez 1310 and 27 parts by weight of Wingtack 10 in the melt, and use 250g / m 2 Coat weights were coated on a 25 μm polyester film etched with trichloroacetic acid.

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Abstract

Pressure-sensitive adhesive comprising a crosslinkable polyolefin and at least one tackifier resin, wherein the polyolefin is composed of at least two monomers A and B and of at least one comonomer C amenable to crosslinking, the monomers A and B being selected from the group consisting of [alpha]-olefins, vinyl acetate, n-butyl acrylate and methyl methacrylate or, in the case of EPDM, a diene such as 5-ethylidene-2-norbornene, dicyclopentadiene or 5-vinyl-2-norbornene.

Description

technical field [0001] The present invention relates to a pressure sensitive adhesive (PSA) comprising a crosslinkable polyolefin and at least one tackifier resin, and to the application of the PSA as a solvent composition or as a hot melt adhesive Method, and the purposes of this PSA in adhesive tape. Background technique [0002] Random copolymers with high comonomer content (also known as plastomers) have low crystallinity and low melting points of about 40°C to 60°C or are amorphous. They act as flexibilizer or impact toughener additives for rigid polyolefins. They are used to a limited extent for hot melt adhesives, since the low melting point means that they are not heat resistant. [0003] This plastomer is proposed as a coextruded layer for slightly tacky and easily releasable surface protection films. These films have no appreciable bond strength at room temperature (in other words, below 0.1 N / cm), but above their melting point they can seal polycarbonate, acryl...

Claims

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Application Information

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IPC IPC(8): C09J123/00C09J123/16C09J151/06C09J123/08C09J7/02C09J7/04E04B1/66G09F3/10H01B7/02H01B13/012
CPCC08L23/02C08L23/0815C08L51/003C09J123/02C09J123/0815C09J151/06C08L2666/02Y10T428/2878Y10T428/2883Y10T428/2891Y10T428/249983C09J7/381C09J7/385C09J7/22C09J7/30C09J9/00C09J123/00C09J201/00C09J2203/00C09J2301/312C09J2301/408C09J2301/302
Inventor 伯恩哈德·马西格克斯廷·梅茨勒
Owner TESA SE
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