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Modified m-cresol-phenol-formaldehyde resin, preparation method and rubber composition thereof

A technology of rubber composition and formaldehyde resin, applied in the field of rubber processing aids, can solve complex problems and achieve the effects of improving storage property, improving water resistance, and simple and direct preparation method

Active Publication Date: 2021-08-17
JIANGSU QIXIANG HIGH NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its synthesis method is divided into two stages of polymerization, and formaldehyde is added in two stages, first the alkali method and then the acid method, which is relatively complicated

Method used

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  • Modified m-cresol-phenol-formaldehyde resin, preparation method and rubber composition thereof
  • Modified m-cresol-phenol-formaldehyde resin, preparation method and rubber composition thereof
  • Modified m-cresol-phenol-formaldehyde resin, preparation method and rubber composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Add megresol 88 g (0.8 mol) and 2.9 g of toluenesulfonic acid to 130 ° C for stirring, temperature control, reflow condensate and constant pressure drip funnel. Styrene 74.9 (0.72 mol) was added dropwise to 90 min, and then phenol was 94 g (1 mol), then cooled to 100 ° C, add 103.0 g of 37% formaldehyde (1.22 mol), and the temperature was added to 90 min, and the temperature was mixed. Distillation to 160 ° C, -0.08 MPa was evaporated for 60 min to give 258 g of modified mealol-phenol-formaldehyde resin of 105 ° C.

Embodiment 2

[0061] 11 g (1.6 mol) was added to the 1L four round bottom flask equipped with stirring, temperature control, reflux condensate and constant pressure drops, with a megol content of 70% and 1.1 g of toluenesulfonic acid. 1.1 g of oxalic acid was heated to 130 ° C, and styrene 108.2 (1.04 mol) was added dropwise, and the incubation was added to 90 min, and then phenol 94 g (1 mol) was added dropwise to 100 ° C, then add 155.3 g of 37% formaldehyde ( 1.87 mol) was added dropwise at 90 min, and the temperature was stirred at a temperature of 160 ° C, -0.08 mPa reduced pressure distillation 60min, resulting in 370 g of the modified mtool-phenol-formaldehyde resin of 95 ° C.

Embodiment 3

[0063] To the 1L four-round round bottom flask equipped with stirring, temperature control, reflow tube and constant pressure drops, including 99.5% of the metallol content and 1.36 g of toluenesulfonic acid. Heat until 130 ° C, adding styrene 114.4 (1.1 mol) by dropping, adding 90 min, then adding phenol 94 g (1 mol), cooling to 100 ° C, then add 127.8 g of 37% formaldehyde (1.54 mol), The incubation was added dropwise 90 min, and the temperature was stirred against 160 ° C, -0.08 mPa was evaporated for 60 min to give 342 g of the modified mouol-phenol-formaldehyde resin softening point of 98 ° C.

[0064] The specific correlation performance test is as follows:

[0065] (1) The results of the free phenol content are shown in Table 1.

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Abstract

The invention provides a modified m-cresol-phenol-formaldehyde resin, a preparation method and a rubber composition thereof. The resin is reacted under an acid catalyst by raw materials including cresol, modifier X, phenol and at least one aldehyde Preparation, the softening point of the prepared modified m-cresol-phenol-formaldehyde resin is 90-110°C, the free phenol in the resin is 0.3-1% of the resin content, the alkyl free phenol is 0.3-1% of the resin content, the resin The glass transition temperature is 55‑65°C. The preparation method of the present invention is simple, and cost is low, and the content of free phenol and free alkylphenol in the prepared modified m-cresol-phenol-formaldehyde resin is greatly reduced, and has adhesive performance equivalent to resorcinol-based adhesive resins, At the same time, the water resistance of the phenolic adhesive resin is improved, and the storage performance of the product is improved.

Description

Technical field [0001] The present invention relates to the field of rubber processing auxiliaries, and more particularly to a modified mealol-phenol-formaldehyde resin, a preparation method, and a rubber composition thereof. Background technique [0002] In the reinforcing rubber product, fiber, nylon, steel wire, etc. will be used as its support skeleton structure, and the bonding reinforcing system between the support of the skeleton structure and rubber is used, and the bonding between rubber and skeleton is improved. It is currently commonly used as interprephenol-hexamethyleneeticate-white carbon black. In the vulcanization process, the white carbon black catalyzed methylene group is released to the hexamethylenetetramide to release formaldehyde, formaldehyde and the interputene diphenol reaction form a network structure, and can improve the mechanical and adhesive properties of the vulcanized rubber. [0003] Due to the lower hortunophenols, there is a large toxicity, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/24C08G8/12C08G8/10C08L9/00C08L11/00C08L9/02C08L9/06C08L61/08
CPCC08G8/10C08G8/12C08G8/24C08L9/00C08L9/02C08L9/06C08L11/00C08L61/06
Inventor 彭华龙高峰王莹莹姚翔尹兴昌
Owner JIANGSU QIXIANG HIGH NEW MATERIAL
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