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Highly-water-soluble thermosetting phenolic resin and method for synthesizing the same

A technology of phenolic resin and synthesis method, which is applied in the field of resin synthesis, can solve problems such as inconvenient use and short storage period, and achieve the effects of prolonging storage period, improving performance and market competitiveness

Active Publication Date: 2010-07-07
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermosetting phenolic resin synthesized by this method has a short storage period due to its high activity, requires a low temperature during storage and transportation, and puts forward higher requirements for storage and transportation conditions, resulting in inconvenient use. , so that the use of phenolic resin also brings certain limitations

Method used

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  • Highly-water-soluble thermosetting phenolic resin and method for synthesizing the same
  • Highly-water-soluble thermosetting phenolic resin and method for synthesizing the same
  • Highly-water-soluble thermosetting phenolic resin and method for synthesizing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 90g of water, 38g of sodium sulfite, and 60g (37%) of formaldehyde into a 2000ml reactor, stir at room temperature for 40min, add 11.2g of sodium hydroxide (47%), and 376g of phenol; heat up and reflux for 60min, then cool down to 60°C, and add formaldehyde 748g (37%), heat up to 80°C for constant temperature reaction, and control the curing time at 5-7min / 130°C. Immediately lower the temperature to below 40°C and discharge to make a thermosetting resin.

Embodiment 2

[0012] In 2000ml reactor, add 90g water, 22g sodium sulfite, 18g sodium bisulfite, 67g (37%) formaldehyde, stir 40min at normal temperature, add sodium hydroxide 21g (47%), phenol 420g, heat up and reflux after 50min and cool down to At 60°C, add 845g (37%) of formaldehyde, raise the temperature to 80°C for constant temperature reaction, and control the curing time at 5-7min / 130°C. Immediately lower the temperature to below 40°C and discharge to make a thermosetting resin.

Embodiment 3

[0014] Add 90g of water, 52g of sodium metabisulfite, and 75g (37%) of formaldehyde into a 2000ml reactor, stir at room temperature for 60min, add 21g of sodium hydroxide (47%), 420g of phenol, heat up and reflux for 50min, then cool down to 60°C, add formaldehyde 809g (37%), heat up to 80°C for constant temperature reaction, and control the curing time at 5-7min / 130°C. Immediately lower the temperature to below 40°C and discharge to make a thermosetting resin.

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Abstract

The invention discloses a high water soluble thermosetting phenol-formaldehyde resin. The high water soluble thermosetting phenol-formaldehyde resin is made from the materials (amounts by weight): 2 to 5 sulphurous acid sodium salt, 1.1 to 1.7 hydroxide, 55 to 65 formaldehyde, 23 to 34 phenol, and 5 to 8 water. The invention also discloses the synthetic method of the thermosetting phenol-formaldehyde resin. The high water soluble thermosetting phenol-formaldehyde resin of the invention can extend the store period as well as keep high water soluble and short-term store period conflict in harmony provided that the solubility can meet the requirement, thus solving the utilized limit caused by the store problem and improving the utilized property of the products and marketing competition.

Description

technical field [0001] The invention relates to the technical field of resin synthesis, in particular, the invention relates to a synthesis method of high water-soluble phenolic resin. Background technique [0002] Existing phenolic resins are usually formed by polycondensation of phenol and aldehyde in the presence of a catalyst, and the most common phenol and aldehyde are phenol and formaldehyde respectively. The traditional high water-soluble thermosetting phenolic resin is formed by polycondensation of phenol formaldehyde in the presence of excess sodium hydroxide and potassium hydroxide. The thermosetting phenolic resin synthesized by this method has a short storage period due to its high activity, requires a low temperature during storage and transportation, and puts forward higher requirements for storage and transportation conditions, resulting in inconvenient use. , so that the use of phenolic resin has also brought certain limitations. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/10
Inventor 唐路林邢介名李枝芳张宝印
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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