CN1210348C - Urea-formaldehyde resin additive - Google Patents
Urea-formaldehyde resin additive Download PDFInfo
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- CN1210348C CN1210348C CN 01117583 CN01117583A CN1210348C CN 1210348 C CN1210348 C CN 1210348C CN 01117583 CN01117583 CN 01117583 CN 01117583 A CN01117583 A CN 01117583A CN 1210348 C CN1210348 C CN 1210348C
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- urea
- added
- ammonium chloride
- additive
- formaldehyde resin
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Abstract
The present invention discloses a urea formaldehyde resin additive which is prepared by that a certain amount of urea and cellulose are dissolved by adding right amount of water, and right amount of aluminium sulfate and sodium hydroxide are added into the solution; then, solidifying agents, such as ammonium chloride, are added into the solution of which the pH value is regulated to 9 to 11, and the additive is obtained. Right amount of additive of the present invention is added into a urea formaldehyde resin adhesive, residual free aldehyde in the original urea formaldehyde resin can be effectively eliminated, generated penetrating odor in a board preparing process is reduced, the additive is favorable for the health of workers, and the viscosity of the urea formaldehyde resin adhesive is reinforced.
Description
The present invention relates to a kind of additive, particularly urea-formaldehyde resin additive.
At present, in the making pressing plate process of glued board, adopting urea glue usually is that urea-formaldehyde resin is made tackiness agent, the free aldehyde that produces in residual a part of glue process in this tackiness agent, and free aldehyde is a kind of gas that has irritating smell, and is very harmful to human body.
The purpose of this invention is to provide a kind of additive that can reduce in the urea formaldehyde resin adhesive free aldehyde and can strengthen urea formaldehyde resin adhesive viscosity.
For achieving the above object, the technical solution used in the present invention is: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent ammonium chloride again, transfer pH value promptly get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, ammonium chloride 0.3-3 part.
As a kind of improvement project of the present invention be: count by weight, each proportioning raw materials is: urea 8-10 part, Mierocrystalline cellulose 1-3 part, Tai-Ace S 150 0.8-2 part, sodium hydroxide 0.5-0.7 part, ammonium chloride 1-2 part.
As another kind of scheme of the present invention be: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent again, transfer pH value promptly to get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, solidifying agent contain ammonium chloride and vulkacit H, ammonium chloride is 0.3-3 part, by weight meter: ammonium chloride: vulkacit H=0.3-3: 0.2-5.
As another kind of scheme of the present invention be: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent again, transfer pH value promptly to get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, solidifying agent contain ammonium chloride and polyvinyl alcohol, ammonium chloride 0.3-3 part, meter by weight: ammonium chloride: polyvinyl alcohol=0.3-3: 0.1-5.
An amount of water is added in the reactor, add urea, Mierocrystalline cellulose, after treating that Mierocrystalline cellulose all dissolves, Tai-Ace S 150 is added wherein, question response is back (about about 15 minutes) fully, add sodium hydroxide again, add solidifying agent such as ammonium chloride then, or ammonium chloride and vulkacit H composite curing agent, or ammonium chloride and polyvinyl alcohol composite curing agent, or ammonium chloride and vulkacit H and polyvinyl alcohol composite curing agent, pH value is controlled between the 9-11.The additive of making is for white or the translucent viscous liquid of little yellow, and is nonpoisonous and tasteless, relative density 1.01-1.09, viscosity 0.10-0.50Pa.S.An amount of additive of the present invention is joined in the urea formaldehyde resin adhesive, part in the cellulose adsorption urea formaldehyde resin adhesive under the normal temperature in the additive of the present invention aldehyde that dissociates, both can guarantee that colloidal was stable, not stratified, not precipitate, and can make the molecular structure of former urea-formaldehyde resin further even, help the storage and the use of urea-formaldehyde resin adhesive; Under the high temperature, promptly under the pressurized conditions of heating in the making sheet process, the further polycondensation of additive of the present invention and urea-formaldehyde resin, can produce the new glued construction of part, bonding force, bonding strength are strengthened to some extent, urea, Mierocrystalline cellulose further with free aldehyde reaction, therefore the generating portion urea-formaldehyde resin can be eliminated free aldehyde residual in the former urea-formaldehyde resin effectively.Free aldehyde residual in the present invention and the former urea-formaldehyde resin as required, can make the free aldehyde in the former urea-formaldehyde resin reduce by 50% at most, thereby reduce the irritating smell that is produced in the making sheet process through after such reaction, helps the healthy of workman; Solidifying agent among the present invention can be accelerated the solidification of tackiness agent effectively in the making sheet process, and the viscosity of urea formaldehyde resin adhesive is strengthened.And the pH value of all kinds of urea-formaldehyde resins that the present invention is used should be controlled between the 7.0-7.5.
The present invention is described further below in conjunction with embodiment.
Embodiment 1: 1kg urea, 0.5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, after treating that Mierocrystalline cellulose all dissolves, again 0.05kg Tai-Ace S 150 is added wherein, after about 15 minutes, react abundant substantially, add 0.1kg sodium hydroxide, promote its complete reaction, add 0.3kg ammonium chloride then, pH value is controlled between the 9-11, promptly gets additive of the present invention.
Embodiment 2: 15kg urea, 5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 5kg Tai-Ace S 150 is added it, after about 15 minutes, react abundant substantially, add 1kg sodium hydroxide, promote its complete reaction, add 3kg ammonium chloride then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 3: 7kg urea, 2.7kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 2.5kg Tai-Ace S 150 is added in it, after about 15 minutes, react abundant substantially, add 0.5kg sodium hydroxide, promote its complete reaction, add 1.5kg ammonium chloride then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 4: 9kg urea, 4kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 3.5kg Tai-Ace S 150 is added in it, after about 15 minutes, react abundant substantially, add 0.8kg sodium hydroxide, promote its complete reaction, add 2.5kg ammonium chloride then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 5: 1kg urea, 0.5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, after treating that Mierocrystalline cellulose all dissolves, again 0.05kg Tai-Ace S 150 is added wherein, after about 15 minutes, react abundant substantially, add 0.1kg sodium hydroxide, promote its complete reaction, add 0.3kg ammonium chloride, 0.2kg vulkacit H then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 6: 15kg urea, 5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 5kg Tai-Ace S 150 is added it, after about 15 minutes, react abundant substantially, add 1kg sodium hydroxide, promote its complete reaction, add 3kg ammonium chloride, 5kg vulkacit H then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 7: 7kg urea, 2.7kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 2.5kg Tai-Ace S 150 is added in it, after about 15 minutes, react abundant substantially, add 0.5kg sodium hydroxide, promote its complete reaction, add 1.5kg ammonium chloride, 2.7kg polyvinyl alcohol then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 8: 1kg urea, 0.5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, after treating that Mierocrystalline cellulose all dissolves, again 0.05kg Tai-Ace S 150 is added wherein, after about 15 minutes, react abundant substantially, add 0.1kg sodium hydroxide, promote its complete reaction, add 0.3kg ammonium chloride, 0.2kg vulkacit H, 0.1kg polyvinyl alcohol then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Embodiment 9: 15kg urea, 5kg Mierocrystalline cellulose are added in the reactor, add an amount of water, treat that Mierocrystalline cellulose all dissolves, again 5kg Tai-Ace S 150 is added it, after about 15 minutes, react abundant substantially, add 1kg sodium hydroxide, promote its complete reaction, add 3kg ammonium chloride, 5kg vulkacit H, 5kg polyvinyl alcohol then, pH value is controlled between the PH9-11, promptly gets additive of the present invention.
Claims (4)
1, a kind of urea-formaldehyde resin additive, it is characterized in that: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent ammonium chloride again, transfer pH value promptly get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, ammonium chloride 0.3-3 part.
2, urea-formaldehyde resin additive according to claim 1 is characterized in that: count by weight, each proportioning raw materials is: urea 8-10 part, Mierocrystalline cellulose 1-3 part, Tai-Ace S 150 0.8-2 part, sodium hydroxide 0.5-0.7 part, ammonium chloride 1-2 part.
3, a kind of urea-formaldehyde resin additive, it is characterized in that: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent again, transfer pH value promptly to get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, solidifying agent contain ammonium chloride and vulkacit H, ammonium chloride is 0.3-3 part, by weight meter: ammonium chloride: vulkacit H=0.3-3: 0.2-5.
4, a kind of urea-formaldehyde resin additive, it is characterized in that: after urea and Mierocrystalline cellulose are added an amount of water dissolution, add Tai-Ace S 150, fully be added into sodium hydroxide again after the reaction, add solidifying agent again, transfer pH value promptly to get this additive to 9-11, count by weight, each proportioning raw materials is: urea 1-15 part, Mierocrystalline cellulose 0.5-5 part, Tai-Ace S 150 0.05-5 part, sodium hydroxide 0.1-1 part, solidifying agent contain ammonium chloride and polyvinyl alcohol, ammonium chloride 0.3-3 part, meter by weight: ammonium chloride: polyvinyl alcohol=0.3-3: 0.1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01117583 CN1210348C (en) | 2001-04-27 | 2001-04-27 | Urea-formaldehyde resin additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01117583 CN1210348C (en) | 2001-04-27 | 2001-04-27 | Urea-formaldehyde resin additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1382744A CN1382744A (en) | 2002-12-04 |
| CN1210348C true CN1210348C (en) | 2005-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01117583 Expired - Fee Related CN1210348C (en) | 2001-04-27 | 2001-04-27 | Urea-formaldehyde resin additive |
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| Country | Link |
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| CN (1) | CN1210348C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006010192A1 (en) * | 2004-07-27 | 2006-02-02 | Orica Australia Pty. Ltd. | System for providing powder coated reconstituted cellulosic substrate |
| CN100475905C (en) * | 2005-05-20 | 2009-04-08 | 中国石油天然气股份有限公司 | Process for preparing urea-formaldehyde resin additive, preparation method and uses |
| CN101585926B (en) * | 2009-04-20 | 2012-02-01 | 永港伟方（北京）科技股份有限公司 | Urea-formaldehyde resin additive, preparing method and application thereof |
| CN103007898B (en) * | 2012-12-31 | 2014-11-05 | 吕新民 | Preparation method and use method of modified bentonite environment-friendly formaldehyde removing agent |
| CN104629662B9 (en) * | 2015-02-03 | 2016-11-16 | 北华大学 | The urea-formaldehyde resin adhesive of a kind of ultra-low formaldehyde release and preparation technology thereof |
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2001
- 2001-04-27 CN CN 01117583 patent/CN1210348C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1382744A (en) | 2002-12-04 |
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