High-performance etherified biological base resin and preparing method thereof

A bio-based resin, amino resin technology, used in aldehyde/ketone condensation polymer adhesives, adhesive types, papermaking, etc., can solve the problem of easy self-crosslinking reaction, poor storage stability, and low etherification degree problems, to achieve the effect of improving market competitiveness and application value, high mechanical strength and hardness, and mild reaction conditions

Active Publication Date: 2018-05-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the imino group is very active and unstable, and it is most prone to self-crosslinking reaction, and its storage stability is poor.
Generally, industrially produced etherified melamine resins contain a certain amount of solvent, and a low degree of etherification will also reduce the solid content
It can be seen from the above that etherified melamine resin has problems such as poor storage stability, high free formaldehyde content, low solid content, and strong odor. While endangering the environment, long-term contact will also cause potential hazards to human health, making it in coatings, The application of ink is limited to a certain extent
[0004] In order to solve the above problems, some researchers chose to introduce photosensitive groups into the structure of amino resins to prepare aminoacrylates, such as "Ying Mingyou. Synthesis of new photosensitive prepolymers and their applications in inks [D]. Jiangnan University, 2008." Syn

Method used

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  • High-performance etherified biological base resin and preparing method thereof
  • High-performance etherified biological base resin and preparing method thereof
  • High-performance etherified biological base resin and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] (1) Add 23.426g high methyl etherified melamine formaldehyde resin (Jinan Sanqiang Chemical Co., Ltd., viscosity 7300mPa s), 124.034g hydroxyethyl cardanol ether, 0.468g p-toluenesulfonic acid, 12g n-octane Power stirring bar, condensing reflux tube, thermometer and 250mL four-necked flask equipped with n-octane water separator;

[0062] (2) Pass dry gas before heating up, slowly raise the temperature to 110°C and slightly reflux within 1 hour, and continue the reaction for 14 hours, so that n-octane and methanol generated in the reactant form an azeotrope to slowly remove from the reaction system Remove small alcohol molecules, react for 14 hours, then raise the temperature to 125°C and continue the reaction for 4 hours;

[0063] (3) Stop heating after the reaction is over and continue to stir and cool to room temperature, and remove residual n-heptane in the system by distillation under reduced pressure to obtain product A;

[0064] (4) Product A is washed repeatedly...

Embodiment 2

[0072] (1) Add 3.254g high-etherified melamine formaldehyde resin (Jinan Sanqiang Chemical Co., Ltd.), 17.227g hydroxyethyl cardanol ether, 0.069g p-toluenesulfonic acid, 2.146g isooctane to a power stirring bar, Condensation reflux tube, thermometer and 100mL four-neck flask equipped with n-heptane water separator;

[0073] (2) Pass dry gas before heating up, slowly raise the temperature to 105°C within 1.5 hours and reflux slightly, and continue the reaction for 13 hours, so that isooctane and butanol generated in the reactants form an azeotrope to slowly remove from the reaction system Removal of alcohol small molecules;

[0074] (3) Stop heating after the reaction is over and continue to stir and cool to room temperature, and remove residual isooctane in the system by distillation under reduced pressure to obtain product A;

[0075] (4) Product A was washed multiple times with acetonitrile to remove unreacted catalyst p-toluenesulfonic acid and raw materials, and after va...

Embodiment 3

[0080] (1) Add 23.614g of high methyl etherified urea formaldehyde resin, 137.816g of hydroxyethyl cardanol ether, 0.274g of p-toluenesulfonic acid, and 12g of n-octane into the In the 100mL four-neck flask of the alkanes water separator;

[0081] (2) Pass dry gas before heating up, slowly raise the temperature to 110°C and microreflux within 1.5 hours, and continue the reaction for 12 hours, so that n-octane and methanol generated in the reactants form an azeotrope to slowly remove from the reaction system Removal of alcohol small molecules;

[0082] (3) Stop heating after the reaction is over and continue stirring to cool to room temperature, and decompressed distillation to remove residual n-octane in the system to obtain product A;

[0083] (4) Product A was washed several times to remove unreacted catalyst and raw materials, distilled under reduced pressure, and dried in a vacuum oven for 24 hours to obtain the product modified urea-formaldehyde resin.

[0084] Highly e...

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Abstract

The invention discloses high-performance etherified biological base resin and a preparing method thereof, and belongs to the technical field of synthetic resin. Amino resin and hydroxyethyl cashew phenol ether with hydroxyl groups serve as the raw materials and have an ether exchange reaction under the effect of a catalyst to obtain modified amino resin high in biological base content, and a certain amount of monohydroxyl low-level ether can be added for mixed etherification to prepare mixed etherification amino resin lower in viscosity and high in stability. The preparing method is simple, low in cost, mild in reaction condition and high in controllability, the synthesized novel biological base mixed etherification amino resin is high in solid content, low in viscosity and stable in product performance, has good biological degradability, and can be used as a chemical intermediate for the field of industrial coating.

Description

technical field [0001] The invention relates to a high-performance etherified bio-based resin and a preparation method thereof, belonging to the technical field of synthetic resins. Background technique [0002] Amino resins are amino-containing (-NH 2 ) is a kind of thermosetting resin with high cross-linking activity obtained by the methylolation reaction of the compound with formaldehyde, and then the etherification modification with the lower alcohol. Usually, the coating film obtained by using amino resin as a crosslinking agent has the advantages of high hardness, high gloss, good color retention, good chemical resistance and weather resistance, so it is widely used in the coating industry, leather tanning agent, adhesive Agents, flame retardant materials and other fields. [0003] At present, there are many etherified melamine resin products on the market, and the synthesis technology is very mature. Melamine formaldehyde resin contains a lot of -CH 2 OH and -NH- ...

Claims

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Application Information

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IPC IPC(8): C08G12/42C08L61/32C09D161/32C09J161/32D06M15/427D21H19/26B33Y70/00
CPCC09D161/32C09J161/32D06M15/427D21H19/26C08G12/42C08G12/422C08G12/427C08L61/32B33Y70/00C08L2201/08
Inventor 刘仁陈淼刘敬成刘朋飞张丽萍刘晓亚陈明清
Owner JIANGNAN UNIV
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