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Modified resorcinol formaldehyde resin as well as preparation method and application thereof

A resorcinol formaldehyde resin and resorcinol technology, applied in the field of rubber processing aids, can solve the problems of resorcinol retention, non-renewable, odor residue, etc., achieve low smoke and odor, and excellent aging performance , Excellent tear resistance

Pending Publication Date: 2021-03-09
JIANGSU QIXIANG HIGH NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, even if m-methyl resin is used, it only reduces the pollution of the rubber mixing environment and the rubber factory. The smell of resorcinol still remains in the production process, and the pollution of resorcinol still stays at the upstream chemical manufacturers.
Resorcinol is easy to absorb water, non-renewable, and the problem of high pollution in the production process has not been solved

Method used

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  • Modified resorcinol formaldehyde resin as well as preparation method and application thereof
  • Modified resorcinol formaldehyde resin as well as preparation method and application thereof
  • Modified resorcinol formaldehyde resin as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] In the 1L four-neck round bottom flask equipped with stirring, temperature control, reflux condenser and constant pressure dropping funnel, add resorcinol 110g (1mol), add catalyst p-toluenesulfonic acid 0.8g (0.8%), heat up To 130°C, add 72.8g (0.7mol) of styrene dropwise at 130°C, keep the temperature for 90min after the dropwise addition, add 44g of cardanol, 66g of phenol and stir for 1h, cool down to 100°C, then add dropwise 81g of 37% formaldehyde ( 0.97mol), heated up and distilled at atmospheric pressure to 160°C, distilled under reduced pressure at -0.08mpa for 60min, blown phenol at 0.01mpa, blown phenol to 280g of effluent quality, obtained 288g of 95°C modified resorcinol formaldehyde at atmospheric pressure resin.

[0045] The amount of raw materials added for each component in Examples 2-5 is shown in Table 1 and prepared according to the method of Example 1.

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Abstract

The invention provides modified resorcinol formaldehyde resin as well as a preparation method and an application thereof. The resin is prepared by reacting resorcinol, an olefin modifier, cardanol, phenol and formaldehyde under the action of an acid catalyst, and the modified resorcinol formaldehyde resin obtained after distillation and phenol blowing contains extremely low content of free resorcinol and phenol; the content of free resorcinol is not more than 0.5%, the content of free phenol is not more than 0.5%, the total content of free phenol is within 1%, and the content of free phenol isvery low; the modified resorcinol formaldehyde resin is added into the rubber composition as an adhesive, so that the rubber composition is small in fuming and smell, and meanwhile, the extraction performance equivalent to that of the resorcinol formaldehyde resin is kept.

Description

technical field [0001] The invention relates to the field of rubber processing aids, in particular to a modified resorcinol formaldehyde resin, a preparation method and an application thereof. Background technique [0002] The m-methyl white system is one of the most widely used adhesive systems in rubber. Resorcinol was commonly used in the early days, but this compound will volatilize during the rubber mixing process, producing heavy odor and toxic fumes, which affect the operating environment, and resorcinol Phenol itself has strong water pollution. Resorcinol is easy to absorb water. It is a product of petroleum extract through large-scale chemical synthesis. The production process is highly polluting and non-renewable. Rubber workers gradually turn to other directions, wherein the pre-polymerization of m-formaldehyde to produce m-formaldehyde resin (resorcinol formaldehyde resin) is the most widely used and the best effect. [0003] However, even if m-methyl resin is u...

Claims

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Application Information

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IPC IPC(8): C08G8/30C08G8/24C08L7/00C08L61/14
CPCC08G8/30C08G8/24C08L7/00C08L61/14
Inventor 高峰彭华龙万小聪
Owner JIANGSU QIXIANG HIGH NEW MATERIAL
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