Preparation method and application of collagen-based adhesive

A technology of collagen and base glue, which is applied in the field of preparation of collagen-based adhesives, can solve the problems of unfavorable production environment and consumers, difficult control of the reaction process, etc., achieve good application prospects, overcome poor water resistance, and have good water resistance Effect

Inactive Publication Date: 2019-04-02
晋江全杰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction process of the used inorganic salt blocking agent sodium bisulfite or potassium bisulfite and organic polyisocyanate is difficult to control
Chinese patent CN 105199662 A discloses "a preparation method of wood adhesive using hydrolyzed collagen as raw material", adding 1.5-3 parts of silane coupling agent and 0-2 parts of bifunctional aldehyde to the hydrolyzed collagen solution React, continue to stir and react for 8-12 hours, you can get hydrolyzed collagen-based adhesives, which can effectively improve the water resistance and strength of collagen adhesives for wood bonding, but the synthetic raw materials of adhesives contain aldehydes, which are harmful to The production environment and consumers are unfavorable

Method used

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  • Preparation method and application of collagen-based adhesive
  • Preparation method and application of collagen-based adhesive
  • Preparation method and application of collagen-based adhesive

Examples

Experimental program
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Effect test

preparation example 1

[0046] Step 1: Synthesize PU prepolymer containing hydrophilic group and terminal isocyanate. details as follows:

[0047] Add 56g of polyethylene adipate diol (PEA) and 19.23g of isophorone diisocyanate (IPDI) with a molecular weight of 2000 into a three-necked flask, 0.16g of an organotin catalyst, react at 50°C for 30min and then heat up to 80°C ℃ and keep it warm for 1h; then lower the temperature to 70℃, add 4.34g dimethylolpropionic acid (DMPA) and 11.9g butanone (MEK), react for 30min, then raise the temperature to 80℃, and continue the reaction for 2~3h until -NCO The content is close to the theoretical value (detected by the di-n-butylamine method), the temperature is lowered to 35°C, and 20 parts by mass of acetone (ACE) is added to reduce the viscosity to 1000mPas to obtain a PU prepolymer. Add epoxy 828, 2.37g to the PU prepolymer Triethylamine (TEA) forms a salt with the carboxyl group in the PU prepolymer.

[0048] Step 2: Polyurethane, epoxy resin graft collag...

preparation example 2

[0055] Step 1: Synthesize PU prepolymer containing hydrophilic group and terminal isocyanate. details as follows:

[0056] Get 40.00 g of hexanediol adipate diol (PHA) with a molecular weight of 2000 in a three-necked flask, heat it in an oil bath at 50° C., add 10.44 g TDI, 0.16 g organic bismuth catalyst to react in the flask successively for 30 min; heat up to 65°C, react for 20min, then raise the temperature to 80°C, and react for 60min; lower the temperature to 70°C, add 2.657g DMPA and 2.6705g butanone into the flask, react for 30min, raise the temperature to 80°C, react for 2h, synthesize - NCO terminated PU prepolymer. Lower the flask to room temperature, add 10.7g of acetone to reduce the viscosity to 1200mPas, add 19.767g of epoxy 828, 2.002g of TEA, stir for 1min, and form a salt.

[0057] In this step, 0.0534gH can also be added 3 PO 4 , together with the catalyst.

[0058] Step 2: PU, epoxy resin graft collagen hydrolyzate. details as follows:

[0059] Add ...

preparation example 3

[0062] Step 1: Synthesize PU prepolymer containing hydrophilic group and terminal isocyanate. details as follows:

[0063] Get 40.00 g of butanediol adipate diol (PBA) of molecular weight 2000 in a three-necked flask, heat in an oil bath at 50° C., add 10.44 g TDI, 0.1 g organic bismuth catalyst to react in the flask successively for 30 min; heat up to 65°C, react for 20min, then raise the temperature to 80°C, and react for 60min; lower the temperature to 70°C, add 2.657g DMPA and 2.6705g butanone into the flask, react for 30min, raise the temperature to 80°C, react for 2h, synthesize - NCO terminated PU prepolymer. Add acetone to reduce the viscosity to 1200mPas, add 19.767g epoxy 828, 2.002gTEA, stir for 1min, and form a salt.

[0064] In this step, 0.05gH can also be added 3 PO 4 , together with the catalyst.

[0065] Step 2: PU, epoxy resin graft collagen hydrolyzate. details as follows:

[0066] Lower the flask to room temperature, add 10.682g of acetone, add 58g o...

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PUM

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Abstract

The invention provides a production method for synthesizing an aqueous adhesive by using collagen modified by polyurethane and epoxy resin. The method includes: firstly, extracting a collagen hydrolysate from raw materials, such as leftover material of leather manufacturing, bones and the like, which contain the collagen, number-average molecular weight being 10,000 to 30,000; then at 50-80 DEG C,synthesizing an isocyanate-terminated polyurethane prepolymer containing a hydrophilic group and mixing the prepolymer with a certain amount of epoxy resin, and adding a salt-forming agent so as to form salts with carboxylic group; finally, adding deionized water, so that during dispersion and emulsion, the collagen hydrolysate can be subjected to grafting reaction with the polyurethane and epoxyresin, thereby synthesizing the aqueous adhesive based on the collagen modified by polyurethane and epoxy resin. In application, a curing agent and filler are not added, or are added to a certain amount, for adhesion of plywoods. With the leftover material of leather manufacturing being a main production raw material, which is reproducible, the product is free of formaldehyde, has excellent waterresistance and adhesion strength, is low in production cost, and can satisfy the use requirement of II-type plywoods. The production method is simple and is easy to control.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a preparation method and application of a collagen-based adhesive. Background technique [0002] Adhesives play a pivotal role in the wood industry. Biomass materials such as protein, starch, and lignin have been used in wood bonding for a long time. As early as the 1920s, soy protein was used in the bonding of plywood and blockboard, and it was widely used in the next 40 years. However, due to its short pot life, low solid content, poor biological corrosion resistance, especially poor water resistance, it can only be used indoors. Since the 1960s, soybean protein binders have been gradually replaced by synthetic adhesives. According to the "2011 China Timber Market Trend Observation Research Forecast Report", according to the calculation of dry basis content, in 2009 my country's wood industry used 5.3568 million tons of glue, of which 5.0449 million tons were urea-for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J189/00C08G18/66C08G18/64C08G18/58C08G18/48C08G18/42C08G18/34
CPCC08G18/4238C08G18/4825C08G18/58C08G18/6446C08G18/6625C09J175/04C09J189/00
Inventor 王全杰侯立杰段宝荣张萌萌刁屾仇同济李兴存赵世坤曹晓雪南婷
Owner 晋江全杰生物科技有限公司
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