Soybean Adhesive Prepared Using Low-Cost and Formaldehyde-Free Crosslinked Dispersant

A soybean adhesive and dispersant technology, which is applied in the preparation of adhesives, animal glue or gelatin, and polymer adhesive additives, etc., can solve the problems that wood-based panels cannot meet the requirements of formaldehyde emission and high cost

Active Publication Date: 2022-05-03
浙江蓝歌新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem that the artificial board prepared by the existing urea-formaldehyde resin adhesive is difficult to meet the requirement for formaldehyde emission, and the cost of the formaldehyde-free PAE soybean adhesive is high, and provides a low-cost and formaldehyde-free exchange Preparation method of joint dispersant and soybean adhesive prepared by using it

Method used

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  • Soybean Adhesive Prepared Using Low-Cost and Formaldehyde-Free Crosslinked Dispersant
  • Soybean Adhesive Prepared Using Low-Cost and Formaldehyde-Free Crosslinked Dispersant
  • Soybean Adhesive Prepared Using Low-Cost and Formaldehyde-Free Crosslinked Dispersant

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specific Embodiment approach 1

[0025] Specific embodiment one: the preparation method of a kind of low-cost and formaldehyde-free cross-linking dispersant of this embodiment, it is finished according to the following steps:

[0026]1. Weigh 50 to 165 parts of water, 80 to 150 parts of glyoxal solution with a mass percentage of 20% to 50% and 10 to 32 parts of urea by weight, and weigh 80 to 150 parts Mix the glyoxal solution with a mass percentage of 20% to 50% and weighed 50 to 165 parts of water evenly, then adjust the pH to 8.5 to 9.5 at room temperature, and stir to raise the temperature to 50°C to 80°C. 8.5 ~ 9.5 and the temperature is 50 ℃ ~ 80 ℃, add 10 ~ 32 parts of urea weighed to obtain the reaction system, the reaction system is heated to 50 ~ 80 ℃ within 25min ~ 35min, and the temperature is Under the condition of 50°C-80°C, heat-preserve the reaction until the reaction system is dripped into water at 19°C-21°C to form cloudy insoluble matter, then stop the heat-retaining reaction to obtain a cr...

specific Embodiment approach 2

[0036] Embodiment 2: This embodiment differs from Embodiment 1 in that the molar ratio of glyoxal to urea is (2.0-2.4):1 when preparing the cross-linked dispersant described in step 1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0037] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, a sodium hydroxide solution with a mass percentage of 10% to 40% is used to adjust the pH to 8.5 to 9.5 at room temperature. Others are the same as in the first or second embodiment.

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Abstract

A soybean adhesive prepared by using a low-cost and formaldehyde-free cross-linked dispersant. The invention relates to a preparation method of the cross-linked dispersant and an adhesive prepared by using the cross-linked dispersant. The invention aims to solve the problem that the artificial board prepared by the existing urea-formaldehyde resin adhesive is difficult to meet the requirement on the amount of formaldehyde released, and the cost of the formaldehyde-free PAE soybean adhesive is high. Preparation method: 1. Mix the glyoxal solution and water evenly, adjust the pH and raise the temperature, then add urea, heat up and keep warm to react to obtain a cross-linked dispersant; 2. Cool and add water to obtain a low-cost and formaldehyde-free cross-linked Dispersant; soybean adhesive prepared by cross-linked dispersant, which is prepared by stirring low-cost and formaldehyde-free cross-linked dispersant, soybean powder and curing agent at room temperature. The invention is used for the preparation method of low-cost and formaldehyde-free cross-linking dispersant and the soybean adhesive prepared by using it.

Description

technical field [0001] The invention relates to a preparation method of a cross-linking dispersant and an adhesive prepared by using the cross-linking dispersant. Background technique [0002] Adhesives are the blood of my country's wood-based panel industry. As the largest country in the world's wood-based panel production, consumption and import and export trade, China's wood-based panel production has exceeded 299 million cubic meters in 2018, an increase of 1.4% over 2017, of which plywood production reached 195 million cubic meters, accounting for all wood-based panels. 65.3% of output, an increase of 1.2%. Adhesives used for plywood production each year exceed 14.92 million tons in terms of solid content, mainly three "formaldehyde-based" synthetic resin adhesives, urea-formaldehyde resin adhesives, melamine-modified urea-formaldehyde resins and phenolic resins, and urea-formaldehyde resins Adhesives account for more than 90%. [0003] Urea-formaldehyde resin, pheno...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/12C09J11/08C09J189/00
CPCC08G12/12C09J189/00C09J11/08C08L61/24
Inventor 高振华阚雨菲阚浩峰姜也葛婧朱梦琪吴栋
Owner 浙江蓝歌新材料科技有限公司
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