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Anaerobic rubber initiating agent and anaerobic rubber having same

A technology of anaerobic adhesive and initiator, applied in the field of anaerobic adhesive, to achieve the effect of good practical prospect and practical strength

Inactive Publication Date: 2009-02-25
GUANGZHOU JIANHONG CHEM FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although tautomeric compounds have not been reported as initiators for anaerobic adhesives, there have been reports about their use as redox initiators for polymerization reactions

Method used

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  • Anaerobic rubber initiating agent and anaerobic rubber having same
  • Anaerobic rubber initiating agent and anaerobic rubber having same
  • Anaerobic rubber initiating agent and anaerobic rubber having same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Triethylene glycol methacrylate and triethylene glycol dimethacrylate are prepared by conventional laboratory methods, using stoichiometric amounts of methacrylic acid and triethylene glycol, using toluene as an entrainer, esterification, neutralization And after removing toluene in a vacuum, add a polymerization inhibitor to obtain triethylene glycol methacrylate.

[0021] Dissolve and mix 100g of triethylene glycol methacrylate (otherwise containing 0.02g of hydroquinone), 1g of benzoin and 1g of trichloroacetic acid, then add 3g of benzoyl peroxide, mix well, and pack the glue immediately Put it into a 100mL polyethylene bottle, leaving about half of the space (air) in the bottle, which is experimental group 1. In addition, 100g of triethylene glycol methacrylate (otherwise containing 0.02g of hydroquinone), 3g of cumene hydroperoxide, 0.5g of acetophenhydrazine, 1.0g of saccharin and 1.0g of maleic acid, after mixing evenly, the glue The liquid is immediately divid...

Embodiment 2

[0026] The formulas in Table 2 were mixed to form the anaerobic adhesives of Experimental Group 2 to Experimental Group 10.

[0027] Table 2 Formulas of each experimental group

[0028]

[0029] Among them, diethyl oxaloacetate is synthesized in the laboratory. 23g of sodium metal wire is added to a solution of 146g of diethyl oxalate and 600g of anhydrous ether, and 88g of anhydrous ethyl acetate is slowly added. After the sodium is dissolved, the obtained Yellow crystalline paste, after extraction and purification, it becomes a yellow liquid with a boiling point of about 131°C (3.2kPa). Other components are commercial reagents.

[0030] Each experimental group was subjected to steel coupon test and M10 bolt torque strength. The results are shown in Table 3.

[0031] Table 3 Comparison of gel time and steel bolt torque strength of anaerobic adhesives in experimental groups 1-10

[0032]

Embodiment 3

[0034] The anaerobic adhesives of experimental group 11 to experimental group 15 were mixed according to the formula in Table 4. The gel time of each experimental group was determined, and the results are shown in Table 4.

[0035] Table 4 Gel effect of anaerobic adhesives when the initiator content is very low

[0036]

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Abstract

The invention discloses an anaerobic rubber trigger based on tautomeric compound as accelerator, which is composed of peroxidate, tautomeric compound and organic acid, wherein the tautomeric compound and organic acid can be replaced by the compound with tautomeric structure and organic acid group. The invention also relates to anaerobic oxygen rubber with the trigger, wherein the trigger is mixed by acrylate or methyl acrylate monomer and / or oligomer and polymerization inhibitor according to certain proportion.

Description

technical field [0001] The invention relates to an initiator, in particular to a new anaerobic adhesive initiator, and to an anaerobic adhesive containing the initiator. Background technique [0002] Anaerobic adhesive sealant, referred to as anaerobic adhesive for short, is a kind of adhesive and sealant that has been widely used in the production of mechanical industrial products. The composition of anaerobic adhesives mainly includes unsaturated monomers (represented by methacrylates), initiators (oxidants, reducing agents or accelerators, etc.), polymerization inhibitors and other modified compositions and fillers, spices, Dyes, chelating agents, etc. Most anaerobic adhesive products are liquid. These liquid anaerobic adhesives are usually stored in polyethylene containers in the form of a single liquid, and then injected into the parts that need to be bonded or sealed during application. Due to the lack of air (oxygen) in the gaps of the parts, under the action of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/32C08F20/10C09J4/00C09K3/10
Inventor 杨颖泰刘伟塘陈锡来
Owner GUANGZHOU JIANHONG CHEM FACTORY
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