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Pressure-sensitive adhesive composition and adhesive article comprising the pressure-sensitive adhesive composition

A pressure-sensitive adhesive, composition technology, applied in the direction of polymer adhesive additives, film/sheet adhesives, adhesive types, etc., can solve uncommon problems

Active Publication Date: 2017-03-29
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Poly(isobutylene), polyvinyl ether, and polybutadiene can also be made into PSAs, but they are less common in the market due to various deficiencies

Method used

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  • Pressure-sensitive adhesive composition and adhesive article comprising the pressure-sensitive adhesive composition
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  • Pressure-sensitive adhesive composition and adhesive article comprising the pressure-sensitive adhesive composition

Examples

Experimental program
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example

[0132] All parts, percentages, ratios, etc. in the examples, as well as in the remainder of this specification, are by weight unless otherwise indicated.

[0133] Materials used in the examples

[0134]

[0135]

[0136] Preparation of vinyl ethers used in the examples

[0137] The mixtures of PdTFA, DPP, BVE, the indicated alcohols, and TEA heated to 75°C over time under nitrogen are shown in Table 1. Cool and filter the reaction mixture through a short plug of silica in a sintered glass funnel. The silica was washed with 20 mL of hexane each time. The filtrate was concentrated under vacuum to afford a yellow crude product. The crude product was mixed with equal parts of hexane and purified by column chromatography on silica gel using hexane as solvent. The collected fractions were concentrated under vacuum to afford the final product as a colorless oil (Preparations 1-5) or white solid (Preparations 6-7). Details are recorded in Table 1 (below).

[0138]

...

example 1 to 7 and comparative example A to C

[0154] Polymers were prepared and tested as follows. From silicone rubber sheet (1.59 mm thick, part no. DSP6038GP-062, Diversified Silicone Products, Santa Fe Springs, California) Cut a rectangular mold with internal dimensions of 25.4mm x 12.7mm. The silicone mold was placed between two microscope slides and the slides were held together by clamps. A mixture of the desired vinyl ether monomer, butanediol divinyl ether (BDDVE) and 1% by weight boron trifluoride diethyl ether (BTFE solution) in the amounts reported in Table 3 was mixed in a vial and then injected into the mold middle. The clamped assemblies were left standing on edge and left at room temperature for 24 hours. The assembly was then cooled with dry ice for five minutes, and one slide was carefully removed to leave solidified polymer on the surface of one slide.

[0155] table 3

[0156] example vinyl ether monomer Vinyl ether monomer, g BDDVE crosslinker, g BTFE solution, g Comparat...

example 8-14 and comparative example 4-6

[0160] Pressure sensitive adhesive (PSA) copolymer slabs were prepared and tested according to the same method used for Examples 1-7. Table 5 (below) records the amounts of components used to prepare each example.

[0161] table 5

[0162]

[0163] Adhesion of the samples was determined using the Probe Adhesion Test according to Test Method 3. The results are reported in Table 6 (below).

[0164]

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Abstract

The present invention provides a pressure sensitive adhesive composition comprising a polyvinyl ether polymer. Polyvinyl ether polymers comprising 2-alkyl alkoxyethylene monomer units independently represented by the formula wherein R1 and R2 represent an alkyl group, and wherein R1 and R2 together have 8 to 30 carbon atoms . The present invention also provides an adhesive article comprising a layer of a pressure sensitive adhesive composition on a substrate.

Description

technical field [0001] The present disclosure broadly relates to pressure sensitive adhesive compositions and articles comprising the same. Background technique [0002] Pressure sensitive adhesive (PSA) tapes are found almost everywhere in homes and workplaces. The simplest construction of a pressure sensitive tape consists of a PSA and a backing. PSAs are tacky at expected use temperatures and adhere to various substrates using only moderate pressure to form a bond. In this way, the PSA tape constitutes a complete self-sustaining adhesive system. [0003] According to the Pressure Sensitive Tape Association, PSAs are known to have properties including: (1) strong and long-lasting adhesion; (2) adhesion with no more than finger pressure; and (4) sufficient cohesive strength to enable clean removal from the adherend. Materials that have been found to function well as PSAs include polymers designed and formulated to exhibit the requisite viscoelastic properties resulting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/08
CPCC09J129/10C09J7/381Y10T428/2878C09J123/08C09J123/0884C09J2301/302C09J9/00C09J11/08
Inventor K·M·莱万多夫斯基J·D·克拉珀
Owner 3M INNOVATIVE PROPERTIES CO
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