CN102877366B - Method for preparing wet curtain paper - Google Patents
Method for preparing wet curtain paper Download PDFInfo
- Publication number
- CN102877366B CN102877366B CN201210371048.4A CN201210371048A CN102877366B CN 102877366 B CN102877366 B CN 102877366B CN 201210371048 A CN201210371048 A CN 201210371048A CN 102877366 B CN102877366 B CN 102877366B
- Authority
- CN
- China
- Prior art keywords
- resin
- wet curtain
- paper
- curtain paper
- resorcinol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a method for preparing wet curtain paper. The method includes the steps: mixing phenolic resin, melamine formaldehyde resin or urea resin with resorcinol aldehyde resin and water to obtain resin water solution; and dipping paper in the resin water solution and then sequentially pressing corrugation, forming and solidifying to obtain the wet curtain paper. The resorcinol aldehyde resin is added into thermosetting resin such as the phenolic resin, the method is applied to production of the wet curtain paper, and the prepared wet curtain paper has fine water absorptivity and tenacity without affecting normal production. In addition, the method for preparing the wet curtain paper is beneficial to reduction of production energy consumption and suitable for large-scale industrial production, production efficiency is improved, and production cost is reduced.
Description
Technical field
The present invention relates to wet curtain equipment technical field, particularly a kind of preparation method of wet curtain paper.
Background technology
Wet curtain paper, another name cascade paper, in honeycomb.Wet curtain paper has the performance characteristics such as high-hydroscopicity and high strength, is the important composition parts required for various wet curtain equipment, as can be used for cooling system, humidification system and filtration system etc.
At present, the production procedure of wet curtain paper is roughly: by the paper impregnated phenolic resin aqueous solution, more repressed corrugation, sizing, be finally be cured under the condition of 150 DEG C ~ 180 DEG C in temperature, obtain wet curtain paper.
But the water imbibition of wet curtain paper prepared by above-mentioned conventional method is poor, and fragility is excessive and toughness is little, is unfavorable for the extensive use of wet curtain paper and is not easy to processing.
Summary of the invention
In order to solve above technical problem, the invention provides a kind of preparation method of wet curtain paper, wet curtain paper prepared by the method has good water imbibition and toughness.
The invention provides a kind of preparation method of wet curtain paper, comprise the following steps:
Phenolic resins, melamine resin or Lauxite are mixed with resorcinol air aldehyde resin, water, obtains resin aqueous solution;
Paper is flooded described resin aqueous solution, more repressed corrugation, sizing, solidification successively, obtain wet curtain paper.
Preferably, the mass ratio of described phenolic resins, melamine resin or Lauxite and described resorcinol air aldehyde resin is 1:0.01 ~ 1.0.
Preferably, the mass ratio of described phenolic resins, melamine resin or Lauxite and described resorcinol air aldehyde resin is 1:0.05 ~ 0.5.
Preferably, described resorcinol air aldehyde resin is resorcinol formaldehyde resin, resorcinol acetaldehyde resin or resorcinol propionic aldehyde resin.
Preferably, the weight average molecular weight of described resorcinol air aldehyde resin is 300 ~ 800; The solid content of described resorcinol air aldehyde resin is 45% ~ 55%.
Preferably, the mass ratio of described resorcinol air aldehyde resin and described water is 1:2 ~ 4.
Preferably, the mass ratio of described phenolic resins, melamine resin or Lauxite and described water is 1:2 ~ 4.
Preferably, the temperature of described mixing is 5 DEG C ~ 40 DEG C.
Preferably, described in be blended in the condition of stirring under carry out, the time of described stirring is not less than 10min.
Preferably, the temperature of described solidification is 150 DEG C ~ 180 DEG C, and the time of described solidification is 10min ~ 25min.
Compared with prior art, phenolic resins, melamine resin or Lauxite mix with resorcinol air aldehyde resin, water by the present invention, obtain resin aqueous solution; Then described resin aqueous solution impregnate paper is adopted, more repressed corrugation, sizing, solidification successively, obtain wet curtain paper.The present invention adopts resorcinol air aldehyde resin to mix with thermosetting resins such as the above-mentioned phenolic resins for wet curtain paper, the resin compound adding resorcinol air aldehyde resin still has the water-soluble preferably of thermosetting and more than 4 times, when being applied to the production of wet curtain paper, while not affecting normal production, the wet curtain paper of preparation can be made to have good water imbibition and toughness.Experimental result shows, and adopt preparation method provided by the invention to prepare wet curtain paper, when its flexibility is 15 °, deflection can reach 110mN; The wet bursting strength of curtain paper of gained can reach 200kPa; Relative water imbibition can reach 260%.
Detailed description of the invention
In order to understand the present invention further, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these describe just for further illustrating the features and advantages of the present invention, instead of limiting to the claimed invention.
The invention provides a kind of preparation method of wet curtain paper, comprise the following steps:
Phenolic resins, melamine resin or Lauxite are mixed with resorcinol air aldehyde resin, water, obtains resin aqueous solution;
Paper is flooded described resin aqueous solution, more repressed corrugation, sizing, solidification successively, obtain wet curtain paper.
The present invention adopts the mixture of resorcinol air aldehyde resin and phenolic resins, melamine resin or Lauxite to produce resin used as wet curtain paper, the water imbibition of the wet curtain paper of preparation and toughness is not only made to significantly improve, and be beneficial to saving production power consumption, enhance productivity, reduce production cost.
Phenolic resins, melamine resin or Lauxite and resorcinol air aldehyde resin add in container by the present invention, add water mixing, obtain resin aqueous solution.
In wet curtain paper is produced, conventional thermosetting resin is heat cured phenolic resins, and has more than 4 times water-soluble preferably, does not affect the application of resin, can provide the performances such as mechanical strength after solidification for paper.In the present invention, heat cured melamine resin or heat cured Lauxite all can replace described phenolic resins for the preparation of wet curtain paper, and preferred phenolic resins or melamine resin, make the quality of the wet curtain paper of preparation better.Wet curtain paper resin generally needs to dilute with water, and the mass ratio of described phenolic resins, melamine resin or Lauxite and described water is preferably 1:2 ~ 4, is more preferably 1:2.5 ~ 3.5.The weight average molecular weight of described phenolic resins, melamine resin or Lauxite is preferably 200 ~ 500, is more preferably 300 ~ 400; The solid content of described phenolic resins, melamine resin or Lauxite is preferably 45% ~ 55%, is more preferably 47% ~ 53%.
The present invention adopts resorcinol air aldehyde resin to mix with thermosetting resins such as the above-mentioned phenolic resins for wet curtain paper, the resin compound adding resorcinol air aldehyde resin still has the water-soluble preferably of thermosetting and more than 4 times, when being applied to the production of wet curtain paper, while not affecting normal production, the wet curtain paper of preparation can be made to have good water imbibition and toughness.
Described resorcinol air aldehyde resin, is generated as there is polycondensation reaction under NaOH, potassium hydroxide, barium hydroxide or magnesian effect at base catalyst by resorcinol and aldehyde compound.In the present invention, described resorcinol air aldehyde resin is preferably resorcinol formaldehyde resin, resorcinol acetaldehyde resin or resorcinol propionic aldehyde resin, is more preferably resorcinol formaldehyde resin.The weight average molecular weight of described resorcinol air aldehyde resin is preferably 300 ~ 800, is more preferably 400 ~ 600; The solid content of described resorcinol air aldehyde resin is preferably 45% ~ 55%, is more preferably 47% ~ 53%.
When described phenolic resins, melamine resin or Lauxite mix with described resorcinol air aldehyde resin, described water by the present invention, the mass ratio of described phenolic resins, melamine resin or Lauxite and described resorcinol air aldehyde resin is preferably 1:0.01 ~ 1.0, more elects 1:0.05 ~ 0.5 as.The mass ratio of described resorcinol air aldehyde resin and described water is preferably 1:2 ~ 4, is more preferably 1:2.5 ~ 3.5.The temperature of described mixing is preferably 5 DEG C ~ 40 DEG C, is more preferably 20 DEG C ~ 30 DEG C; Described mixing is preferably carried out under the condition stirred, and the time of described stirring is preferably not less than 10min.
After obtaining resin aqueous solution, the present invention is by its impregnate paper, and repressed corrugation, sizing, solidification successively again after preferably drying, obtains wet curtain paper.
Wherein, described paper is the body paper that this area is commonly used.Described dipping, described oven dry are technological means well known to those skilled in the art, and the time of described oven dry is preferably 5 seconds ~ 10 seconds, are beneficial to subsequent handling operation.Described compacting corrugation, described in be fixed to technological means well known to those skilled in the art, the present invention is all not particularly limited it.The temperature of described solidification is preferably 150 DEG C ~ 180 DEG C, is more preferably 160 DEG C ~ 170 DEG C; The time of described solidification is preferably 10min ~ 25min, is more preferably 15min ~ 20min.The present invention adopts described resin aqueous solution to prepare wet curtain paper, while not affecting normal production, saves and produces power consumption, enhance productivity, reduce production cost.
After obtaining wet curtain paper, the present invention carries out performance test to it.The present invention's curtain paper that wet by gained cuts into the scraps of paper of 3 70mm × 40mm, the bending break stiffness of the curtain paper that wets according to the method for Static bending test gained in CNS GB/T22364-2008 " mensuration of paper and paperboard bending break stiffness ".The present invention's curtain paper that wet by gained cuts into the scraps of paper of 3 7mm × 7mm, tests gained to wet the bursting strength of curtain paper according to CNS GB/T454-2002 " mensuration of paper bursting strength ".The present invention's curtain paper that wet by gained cuts into the scraps of paper of 100mm × 100mm, tests gained to wet the relative water imbibition of curtain paper according to CNS GB/T461.3-2005 " the absorptive mensuration of paper and paperboard (bowssening) ".
Experimental result shows, and adopt preparation method provided by the invention to prepare wet curtain paper, when its flexibility is 15 °, deflection can reach 110mN; The wet bursting strength of curtain paper of gained can reach 200kPa; Relative water imbibition can reach 260%.Show that the present invention adds water imbibition and the toughness that resorcinol air aldehyde resin can improve wet curtain paper in conventional wet curtain paper resin, be beneficial to application.
In order to understand the present invention further, below in conjunction with embodiment, the preparation method to wet curtain paper provided by the invention is described in detail.
Following examples resorcinol air aldehyde resin used for the model that holy well group provides be the resorcinol formaldehyde resin of 9EXP0610, following examples and comparative example phenolic resins used for the model that holy well group provides be the phenolic resins of 9EXP0638, following examples melamine resin used for the model that holy well group provides be the melamine resin of 9EXP0783.
Embodiment 1
1000 grams of phenolic resins, 50 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3150 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 5 seconds, be finally cured in 160 DEG C of baking ovens, 25min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness see table 1, the bending break stiffness result of the wet curtain paper that table 1 is the embodiment of the present invention, comparative example obtains; The test result of bursting strength see table 2, the bursting strength result of the wet curtain paper that table 2 is the embodiment of the present invention, comparative example obtains; Absorptive test result see table 3, the water imbibition result of the wet curtain paper that table 3 is the embodiment of the present invention, comparative example obtains.
Embodiment 2
1000 grams of phenolic resins, 150 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3450 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 10 seconds, be finally cured in 160 DEG C of baking ovens, 20min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
Embodiment 3
1000 grams of phenolic resins, 300 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3900 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 5 seconds, be finally cured in 160 DEG C of baking ovens, 20min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
Embodiment 4
1000 grams of phenolic resins, 50 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3150 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 5 seconds, be finally cured in 160 DEG C of baking ovens, 15min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
Embodiment 5
1000 grams of melamine resins, 50 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3150 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 10 seconds, be finally cured in 160 DEG C of baking ovens, 15min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
Embodiment 6
1000 grams of melamine resins, 200 grams of resorcinol formaldehyde resins are added in the container with agitator, adds 3600 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 10 seconds, be finally cured in 160 DEG C of baking ovens, 15min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
Comparative example 1
1000 grams of phenolic resins are added in the container with agitator, adds 3000 grams of water, at room temperature stir 10min, obtain resin aqueous solution;
Pour in steeping vat by described resin aqueous solution, start impregnate paper, then dried by the paper after dipping, carry out compacting corrugation, sizing after 5 seconds, be finally cured in 160 DEG C of baking ovens, 45min Post RDBMS completes, and obtains wet curtain paper.
After obtaining wet curtain paper, according to method mentioned above, performance test is carried out to it.The test result of bending break stiffness is see table 1, and the test result of bursting strength is see table 2, and absorptive test result is see table 3.
The bending break stiffness result of the wet curtain paper that table 1 embodiment of the present invention, comparative example obtain
As shown in Table 1, relative to comparative example, the bending break stiffness of the wet curtain paper that the embodiment of the present invention provides is higher.
In addition, the amount of resorcinol air aldehyde resin is more, and resin solidification is better, and the wet bending break stiffness of curtain paper of gained is higher.
The bursting strength result of the wet curtain paper that table 2 is the embodiment of the present invention, comparative example obtains
As shown in Table 2, relative to comparative example, the bursting strength of the wet curtain paper that the embodiment of the present invention provides is higher, and toughness is better.
In addition, enbrittle after thermosetting resin cured, the gained curtain paper that wets decreases relative to the bursting strength of body paper.
The water imbibition result of the wet curtain paper that table 3 is the embodiment of the present invention, comparative example obtains
As shown in Table 3, relative to comparative example, the relative water suction of the wet curtain paper that the embodiment of the present invention provides is higher, and water imbibition is better.
As seen from the above embodiment, wet curtain paper prepared by method provided by the invention has good water imbibition and toughness, excellent performance, is beneficial to application.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (8)
1. a preparation method for wet curtain paper, comprises the following steps:
Phenolic resins, melamine resin or Lauxite are mixed with resorcinol air aldehyde resin, water, obtains resin aqueous solution; The weight average molecular weight of described resorcinol air aldehyde resin is 300 ~ 800; The solid content of described resorcinol air aldehyde resin is 45% ~ 55%;
Paper is flooded described resin aqueous solution, more repressed corrugation, sizing, solidification successively, the temperature of described solidification is 150 DEG C ~ 180 DEG C, and the time of described solidification is 15min ~ 20min, obtains wet curtain paper.
2. preparation method according to claim 1, is characterized in that, the mass ratio of described phenolic resins, melamine resin or Lauxite and described resorcinol air aldehyde resin is 1:0.01 ~ 1.0.
3. preparation method according to claim 2, is characterized in that, the mass ratio of described phenolic resins, melamine resin or Lauxite and described resorcinol air aldehyde resin is 1:0.05 ~ 0.5.
4. preparation method according to claim 1, is characterized in that, described resorcinol air aldehyde resin is resorcinol formaldehyde resin, resorcinol acetaldehyde resin or resorcinol propionic aldehyde resin.
5. preparation method according to claim 1, is characterized in that, the mass ratio of described resorcinol air aldehyde resin and described water is 1:2 ~ 4.
6. preparation method according to claim 1, is characterized in that, the mass ratio of described phenolic resins, melamine resin or Lauxite and described water is 1:2 ~ 4.
7. preparation method according to claim 1, is characterized in that, the temperature of described mixing is 5 DEG C ~ 40 DEG C.
8. preparation method according to claim 1, is characterized in that, described in be blended in the condition of stirring under carry out, the time of described stirring is not less than 10min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210371048.4A CN102877366B (en) | 2012-09-28 | 2012-09-28 | Method for preparing wet curtain paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210371048.4A CN102877366B (en) | 2012-09-28 | 2012-09-28 | Method for preparing wet curtain paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102877366A CN102877366A (en) | 2013-01-16 |
| CN102877366B true CN102877366B (en) | 2015-04-22 |
Family
ID=47478867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210371048.4A Active CN102877366B (en) | 2012-09-28 | 2012-09-28 | Method for preparing wet curtain paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102877366B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294701A (en) * | 2014-09-23 | 2015-01-21 | 北京纳迅科技有限公司 | Phenolic resin solution for paper wet curtain and paper wet curtain |
| CN104403069B (en) * | 2014-12-16 | 2016-06-29 | 山东圣泉新材料股份有限公司 | A kind of fire-retardant wet curtain amino resins and preparation method |
| CN106810656B (en) * | 2016-12-29 | 2019-05-21 | 广西玉林利而安化工有限公司 | A kind of phenol-formaldehyde resin modified and preparation method thereof |
| CN108035194A (en) * | 2017-05-28 | 2018-05-15 | 山东龙德复合材料科技股份有限公司 | A kind of rapid curing automobile filter paper dip-coating glue, automobile filter paper and preparation method using the dip-coating glue |
| CN112323535A (en) * | 2020-11-25 | 2021-02-05 | 郭春明 | Water curtain paper preparation equipment and preparation method |
| CN115807356A (en) * | 2022-12-09 | 2023-03-17 | 谢永培 | Humidifying and cooling porous absorbent paper, preparation process thereof, wet curtain and ventilation equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108966A (en) * | 1984-11-05 | 1986-09-03 | 欧文斯-科尔宁格·费伯格拉斯公司 | Glass fiber size and soaker |
| CN1526748A (en) * | 2003-09-23 | 2004-09-08 | 南京彤天科技实业有限责任公司 | Resorcin-formaldehye resin for dipping fiber and its prepn |
| CA2432532C (en) * | 2001-01-12 | 2010-10-12 | Sovoutri Societe Voultaine De Transformes Industriels | Method for the production of a carbon fibre-based reinforcing element for tyres |
| CN102432789A (en) * | 2011-09-29 | 2012-05-02 | 山东圣泉化工股份有限公司 | Phenolic resin for wet curtain paper, preparation method of phenolic resin and preparation method of wet curtain paper |
-
2012
- 2012-09-28 CN CN201210371048.4A patent/CN102877366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108966A (en) * | 1984-11-05 | 1986-09-03 | 欧文斯-科尔宁格·费伯格拉斯公司 | Glass fiber size and soaker |
| CA2432532C (en) * | 2001-01-12 | 2010-10-12 | Sovoutri Societe Voultaine De Transformes Industriels | Method for the production of a carbon fibre-based reinforcing element for tyres |
| CN1526748A (en) * | 2003-09-23 | 2004-09-08 | 南京彤天科技实业有限责任公司 | Resorcin-formaldehye resin for dipping fiber and its prepn |
| CN102432789A (en) * | 2011-09-29 | 2012-05-02 | 山东圣泉化工股份有限公司 | Phenolic resin for wet curtain paper, preparation method of phenolic resin and preparation method of wet curtain paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102877366A (en) | 2013-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102877366B (en) | Method for preparing wet curtain paper | |
| CN101100079B (en) | Core-shell type multifunctional composite wood precursor solution and its preparation method | |
| CN102718935B (en) | Preparation method of phenolic resin for wet curtain paper and preparation method of wet curtain paper | |
| CN102604021B (en) | Method for synthesizing urea-formaldehyde resin containing micro free formaldehyde for E0-level artificial boards | |
| CN110482525B (en) | Modified carbon aerogel and preparation method and application thereof | |
| CN102241802A (en) | Comprehensive utilization of phenol-containing wastewater | |
| CN105367032A (en) | Preparation method of nano heat preservation board | |
| CN106752001A (en) | A kind of imvite modified waterproof flame-retardant type biomass board and preparation method thereof | |
| CN108818808A (en) | A kind of preparation method of water-fast bamboo-wood plyboard | |
| CN106380885A (en) | Novel environment-friendly artificial board | |
| CN104005261A (en) | Modified waterborne phenolic resin for automobile engine oil filter paper and preparation method thereof | |
| CN101891936B (en) | Preparation method of composite material based on epoxy resin and phosphazene nanotubes | |
| CN109575508A (en) | A kind of phenolic resin compound insulating material and preparation method thereof | |
| CN109648678A (en) | Wood-fibred-coir composite sound-absorbing material and preparation method thereof | |
| CN102585129A (en) | Urea-formaldehyde resin for artificial board and modification modulation method thereof | |
| CN103289307A (en) | Preparation method of high energy-saving type modified environment-friendly phenolic fireproof insulation board | |
| CN106753100B (en) | Inorganic nano particle hybrid phenolic resin adhesive and preparation method thereof | |
| CN103030922B (en) | Water-soluble phenolic resin solution for woven friction materials and preparation method thereof | |
| CN104312502B (en) | Non-formaldehyde wood adhesive based on starch and quebracho extract and preparation method thereof | |
| CN102850497B (en) | Method for preparing urea-formaldehyde resin adhesive | |
| CN108977149A (en) | A kind of modified epoxy adhesive of wrapping paper and preparation method thereof | |
| CN108410400A (en) | A kind of preparation method of corrugated board processing water-resistant adhesive | |
| CN114855500A (en) | Environment-friendly curing-free engine oil filtering material and preparation method thereof | |
| CN104419363A (en) | Method for producing phenolic resin-nitrile rubber adhesive | |
| CN106045516A (en) | Process for preparing environment-friendly lignin ceramics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 250204 Shandong city of Ji'nan province Zhangqiu City Diao Town Industrial Development Zone Applicant after: SHANDONG SHENGQUAN NEW MATERIAL CO., LTD. Address before: 250204 Shandong city of Ji'nan province Zhangqiu City Diao Town Industrial Development Zone Applicant before: Shandong Shengquan Chemical Industry Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: SHANDONG SHENGQUAN CHEMICAL INDUSTRY CO., LTD. TO: SHANDONG SHENGQUAN NEWMATERIALS CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |