Urea formaldehyde condensate additive agent, production method and urea formaldehyde condensate adhesive agent
A urea-formaldehyde resin and additive technology, applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesive types, adhesive additives, etc., can solve the problems of reducing the bonding strength of products, prolonging and improving curing time, etc., and reaching the manufacturing cost. Will not increase, reduce formaldehyde emission, easy to use effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0035] 1) Prepare materials according to the following weight ratio:
[0036] Sodium carbonate solution (mass percentage concentration 0.5%) 100kg
[0037] Tea waste 20kg
[0038] 2) Add all the tea waste into the sodium carbonate solution, stir evenly, heat to 90°C, condense and reflux, and keep it warm for 3 hours.
[0039] 3) After the temperature is lowered to 30°C, use gauze to filter the tea waste residue to obtain a tea waste extraction solution.
[0040] 4) Use a rotary evaporator (Xi'an Wantong Commercial Union R206D) to dehydrate until the solid content of the tea waste extraction solution is 30% (determined by vacuum oven drying), and adjust the pH of the concentrated solution to 7.0-7.2 with formic acid to prepare the present invention The urea-formaldehyde resin additive.
[0041] The performance indicators of the obtained additives are shown in Table 1.
[0042] 5) Preparation of urea-formaldehyde resin adhesive: the above-mentioned additives and the above-mentioned ...
Embodiment 2
[0045] Except that the weight ratio of the urea-formaldehyde resin additive tea waste extract solution of the present invention and the urea-formaldehyde resin is 5:100, the rest is the same as in Example 1.
[0046] The quality index of the prepared urea-formaldehyde resin adhesive is shown in Table 2.
Embodiment 3
[0048] 1) Prepare materials according to the following weight ratio:
[0049] Sodium carbonate solution (mass percentage concentration 2%) 100kg
[0050]Tea waste 5kg
[0051] 2) Add all the tea waste into the sodium carbonate solution, stir evenly, heat to 80°C, condense and reflux, and keep it warm for 4 hours.
[0052] 3) Then, the temperature is lowered to 30°C, and the waste tea is filtered with gauze to obtain a tea waste extraction solution.
[0053] 4) After using Xi'an Wantong Commercial Union R206D rotary evaporator to dehydrate the tea waste extraction solution to a solid content of 35% (determined by vacuum oven drying), adjust the pH of the tea waste extraction concentrate with formic acid to 7.0-7.2 , The urea-formaldehyde resin additive of the present invention is prepared.
[0054] The performance indicators of the obtained additives are shown in Table 1.
[0055] 5) Preparation of urea-formaldehyde resin adhesive: the above-mentioned additives and the above-mentio...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com