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Water-based pressure-sensitive adhesive compositions

A technology of composition, emulsion composition, applied in the direction of adhesive type, ester copolymer adhesive, adhesive, etc., can solve the problems of reduced importance, pollution, high energy consumption, etc.

Active Publication Date: 2017-09-26
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PSA compositions containing organic solvents, although currently dominating the market, are decreasing in importance due to various issues such as pollution, high energy consumption and flammability associated with the use of organic solvents

Method used

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  • Water-based pressure-sensitive adhesive compositions
  • Water-based pressure-sensitive adhesive compositions
  • Water-based pressure-sensitive adhesive compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0153] All parts, percentages, ratios, etc. in the examples are by weight unless otherwise indicated.

[0154] As used herein, the term "pph" means parts per hundred.

[0155] Table 1: Materials

[0156]

[0157]

[0158]

[0159]

[0160] Test Method 1: Measurement of Polymer Molecular Weight

[0161] The molecular weight distribution of the compounds was characterized using gel permeation chromatography (GPC). The GPC instrument was purchased from Waters Corporation (Waters Corporation, Milford, MA, USA) in Milford, Massachusetts, and it included a high-pressure liquid chromatography pump (model 1515HPLC), an autosampler (model 717), a UV detector ( Model 2487) and Refractive Index Detector (Model 2410). The chromatograph was equipped with two 5 micron PLgel MIXED-D columns obtained from Varian Inc. (Palo Alto, CA, USA).

[0162] Polymer solution samples were prepared by dissolving polymer or dried polymer samples in tetrahydrofuran at a concentration of ...

preparation example 1

[0195] Preparation Example 1 (PE-1)

[0196] A two-step process was used to prepare the polymers. In the first step of polymerization, a mixture consisting of 88 kg IBOA, and 2.72 kg acrylic acid (AA), and 90.8 g IRGANOX 1010, 381 g IOTG, 18.2 g MEHQ, and 1.8 grams of VAZO 52. The reactor was sealed and purged with nitrogen, then maintained under a nitrogen pressure of approximately 5 psig (34.5 kPa). The reaction mixture was heated to 60°C (140°F) and reacted adiabatically with a peak temperature of 127°C (260°F). When the reaction was complete, the mixture was cooled to below 50 °C.

[0197] In the second step, 10.9 grams of VAZO 52, 3.6 grams of VAZO 67, 5.4 grams of VAZO 88, 5.4 grams of LUPERSOL 101 and 7.3 grams of LUPERSOL 130 were added to the reaction product of the first step (initiator components dissolved in a small amount of ethyl acetate solution in ester). An additional 191 grams of IOTG was then added. The reactor was sealed and purged with nitrogen and...

preparation example 2

[0199] Preparation example 2 (PE-2)

[0200] In the first step of polymerization, 2 kg of a mixture consisting of 300 g of IOA, 1600 g of IBOA, and 100 g of AA, and 2 g of IRGANOX 1010, 50 g of IOTG, 0.4 grams of MEHQ, and 0.12 grams of VAZO 52. The reactor was sealed, purged of oxygen with nitrogen, and maintained under a nitrogen pressure of approximately 5 psig (approximately 34 kPa). In a first step the reaction mixture is heated to 60° C. and reacted adiabatically. The temperature peaked at 149°C. When the reaction was complete, the mixture was cooled to below 50 °C.

[0201] The various initiators (0.36 g VAZO 52, 0.08 g VAZO 67, 0.12 g VAZO 88, 0.12 g LUPERSOL 101, and 0.16 g LUPERSOL 130) dissolved in a minimum amount of ethyl acetate were then added to the reaction product in the first step ) solution and 25 grams of IOTG. The reactor was sealed and purged of oxygen with nitrogen, then maintained under a nitrogen pressure of 5 psig (approximately 34 kPa). The ...

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Abstract

A pressure-sensitive adhesive is provided that is a dried product of a latex composition, which is formed from an emulsion composition. The latex composition and the emulsion composition are also provided. The emulsion composition has droplets that contain various monomers plus a (meth)acrylate polymer and a hydrogenated hydrocarbon tackifier dissolved in the monomers. Additionally, an article containing a layer of the pressure-sensitive adhesive and a method of forming the pressure-sensitive adhesive are provided. The pressure-sensitive adhesives often have both high peel adhesion and high shear strength (i.e., high cohesive strength or high shear holding power).

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application 62 / 097795, filed December 30, 2014, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention provides a pressure-sensitive adhesive, a latex composition for forming a pressure-sensitive adhesive, and an emulsion composition for forming a latex composition. Background technique [0004] Pressure sensitive adhesive (PSA) tapes are nearly ubiquitous in homes and workplaces. In one of its simplest constructions, a pressure sensitive adhesive tape includes a backing layer and an adhesive layer attached to the backing layer. According to the Pressure-Sensitive Tape Council, pressure-sensitive adhesives are known to have properties that include: (1) strong and long-lasting adhesion; (2) adhesion with no more than finger pressure ; (3) have sufficient ability to remain on the attachment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08
CPCC09J133/08C08L2201/54C08L33/08C08F220/1808C08F220/1811C08F220/06C08F216/1433C09J7/385C08L2201/52C09J2301/302
Inventor 郄丽丽陈中宋志鹏J·R·雅各布森P·S·威利特R·D·瓦伊德J·塞斯
Owner 3M INNOVATIVE PROPERTIES CO
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