Anaerobically curable (meth)acrylate compositions

A methacrylate-functional, acrylate-based technology for use in anaerobically curable compositions

Active Publication Date: 2021-08-24
HENKEL KGAA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, conventional anaerobically curable compositions are ineffective for bonding some substrates, such as passive substrates like plastics and some alloys

Method used

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  • Anaerobically curable (meth)acrylate compositions
  • Anaerobically curable (meth)acrylate compositions
  • Anaerobically curable (meth)acrylate compositions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0159]

[0160] The methacrylate-functionalized polybutadiene used in Example 1 was a methacrylate (vinyl) terminated butadiene (VTB) polymer with a number average molecular weight of about 4,450. Such VTB polymers are available under the trade name Hypro TM 2000X168LC from Emerald Performance purchased.

[0161]Suitable styrene-butadiene block copolymers are available under the trade names D1155E polymer was purchased from Kraton Performance Polymers. D1155E is a transparent linear block copolymer based on styrene and butadiene with 40% by mass of bound styrene.

[0162] A suitable source of propoxylated bisphenol A fumarate polyester is FILCO 663P, other sources include those commercially available under the tradenames ATLAC 382 and DION 382E.

[0163] Figures 1 to 6 The tensile strength of various compositions observed on various substrates is shown. Substrates shown are abbreviated as follows: Perspex (polymethyl methacrylate; "PX"); mild steel ("MS"); stainle...

Embodiment 2

[0165] Example 2 (comparative): The tensile strength properties of methyl methacrylate (MMA) compositions comprising different levels of styrene-butadiene block copolymer on lap shear substrates were evaluated. Compositions comprising 10% and 20% by weight styrene-butadiene block copolymer were prepared as follows.

[0166]

[0167] figure 2 The tensile strength performance of Composition A versus Compositions C and D on various passive substrates is shown. Although the addition of styrene-butadiene block copolymers improved the tensile strength properties on several substrates, the styrene-butadiene block copolymers and methacrylate-functionalized polybutadiene The combination results in improved tensile strength properties.

Embodiment 3

[0168] Example 3 (comparative): The tensile strength properties of MMA compositions comprising different levels of methacrylate functionalized polybutadiene on lap shear substrates were evaluated. Compositions comprising 10% and 20% by weight methacrylate functionalized polybutadiene were prepared as follows.

[0169]

[0170] image 3 The tensile strength performance of Composition A relative to Compositions E and F on various passive substrates is shown. While the incorporation of methacrylate-functionalized polybutadiene improved tensile strength properties on several substrates, styrene-butadiene block copolymers and methacrylate-functionalized polybutadiene The combination results in enhanced tensile strength properties for certain substrates.

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PUM

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Abstract

The present invention relates to an anaerobically curable (meth)acrylate composition, a process for its preparation and its use. The anaerobically curable composition has been shown to be effective in bonding a variety of substrates, and the tensile strength properties of the composition are excellent.

Description

technical field [0001] The present invention relates to an anaerobically curable composition, a bonding method using the anaerobically curable composition, a component bonded using the anaerobically curable composition, and a cured product of the anaerobically curable composition. Background technique [0002] Anaerobically curable compositions are generally well known. See, eg, "Anaerobic Adhesives" in R.D. Rich, Handbook of Adhesive Technology, 29, 467-79, edited by A. Pizzi and K.L. Mittal, Marcel Dekker, Inc., New York (1994), and references cited therein. Their uses are manifold and new applications are constantly being developed. [0003] Anaerobic adhesive systems are systems that are stable in the presence of oxygen, but polymerize in the absence of oxygen. Polymerization is initiated by the presence of free radicals, usually generated by peroxygen compounds. The ability of anaerobic adhesive compositions to remain in a liquid, unpolymerized state in the presence ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J109/00C09J125/00
CPCC09J109/00C09J4/06C08F287/00C08F20/18C08K5/14C08L33/08C08L33/10C08L33/12C08L33/14C09J133/08C09J133/10C09J133/12C09J133/14C09J11/06C08L53/02C08L67/00B05D5/10B05D7/24B05D7/02B05D7/14C09J11/04B32B7/12B32B15/08B32B37/12C09J5/00C09J11/08C09J2400/163C09J2409/00C09J2433/00
Inventor D·马伦L·希林B·科尼夫赛
Owner HENKEL KGAA
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