CN101874918A - Novel efficient formaldehyde scavenger - Google Patents
Novel efficient formaldehyde scavenger Download PDFInfo
- Publication number
- CN101874918A CN101874918A CN2009100501752A CN200910050175A CN101874918A CN 101874918 A CN101874918 A CN 101874918A CN 2009100501752 A CN2009100501752 A CN 2009100501752A CN 200910050175 A CN200910050175 A CN 200910050175A CN 101874918 A CN101874918 A CN 101874918A
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- agent
- formaldehyde scavenger
- scavenger
- preparation
- 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.)
- Pending
Links
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention discloses a novel formaldehyde scavenger, which comprises a plurality of components such as a penetrating agent A, a reactant B, a stabilizing agent C, water or an organic solvent D and the like. The novel formaldehyde scavenger not only can catch free formaldehyde released from urea-formaldehyde resin for building materials such as artificial boards which contain chemical substances such as formaldehyde and the like and are used in a newly-built dwelling house, but also can infiltrate into the materials of chemical building materials such as the artificial boards and the like, forest products and the like to thoroughly eliminate the formaldehyde not to be released in the type of materials and achieve the aim of eliminating the formaldehyde for a long time and forever.
Description
Technical field: the present invention relates to be used for removing a kind of composition of formaldehyde, particularly remove the used building materials that contain chemical substances such as formaldehyde of newly-built dwelling house.
Technical background:
In newly-built house decoration process, paste and wait and often to use.And the place of every use adhesive all might volatilize formaldehyde, when concentration of formaldehyde in the indoor environment build up reach a certain amount of after, will produce toxic action.
Show that according to interrelated data when formaldehyde in indoor air content reached 0.06～0.07 milligram/cubic metre, slight asthma will take place children; When its concentration is 0.1 milligram/cubic metre, peculiar smell and sense of discomfort are just arranged: when reaching 0.5 milligram/cubic metre, stimulate eyes, cause and shed tears; When reaching 0.6 milligram/cubic metre, can cause throat discomfort or pain; The more Gao Shike vomiting that causes nausea of concentration, it is uncomfortable in chest to cough, asthma even pulmonary edema; When reaching 30 milligrams/cubic metre, meeting is the causing death immediately.
Therefore, remove formaldehyde, control formaldehyde pollutes, and helps protecting people ' s health.Has extremely strong social effect.The formaldehyde scavenger kind of having reported is more, as patent 01140051.x, DE2917159 and US5268502 etc., is to do formaldehyde catching agent or lay particular stress on sulphite, urea, Tea Polyphenols, activity methene compound etc. with product of transesterification reaction.Thereby the reduction curing reaction of urea formaldehyde resin speed that the adding of these agent for capturing has influences the decline of the physical and mechanical property of artificial board, and the cost that has is higher.The reaction that has is not thorough, and is not enough as the stability of the product behind urea and the formolite reaction, still can slowly release formaldehyde.The object of the present invention is to provide a kind of novel formaldehyde scavenger, this scavenger by high-efficient penetrant, can form with basic amino acid, hydrazides class material and other auxiliary agent of formaldehyde generation chemical reaction, it can not only catch the used building materials that contain chemical substances such as formaldehyde of newly-built dwelling house, as artificial board with the free formaldehyde that discharges in the Lauxite, and porous is to material internals such as chemical building materials such as artificial board, timber, thoroughly remove the formaldehyde that does not discharge temporarily in this class material, reach the purpose of for a long time, forever removing formaldehyde.
The object of the present invention is achieved like this: formaldehyde scavenger is made of compositions such as reactant, bleeding agent, stabilizing agent, water.Wherein reactant is the amino acids material, is several amino acid whose mixtures.Reactant also comprises any one or two kinds and two or more mixtures of amine, hydrazine class, amide-type, hydrazide kind compound.Bleeding agent is one or more compositions of oleic acid, laruyl alcohol, azone, dimethyl sulfoxide (DMSO), menthol, refreshing ketone, and it plays efficient osmosis in product.Stabilizing agent is one or more compositions of vegetable oil, glycerine, polyacrylate, vitamin C, NaOH, sodium carbonate, sodium acetate, ammonium acetate, ammonium carbonate, sodium chloride, ammonium chloride etc., can use separately, also can mix use.When stabilizing agent uses separately aldehydes is not removed ability, the ability of removing in other words is relatively poor, if but use with together with reactant and bleeding agent, can further improve the removing ability of product to aldehyde.
Other are water or organic solvent.The C that organic solvent can be familiar with everybody
1～C
8Straight chain shape or polyalcohols thing, aromatic hydrocarbons thing, moieties such as ester ring type alcohols thing, ethylene glycol such as the aliphatic saturated alcohols class thing of chain, cyclopentanol, hexamethylene ferment be C
1～C
8Straight chain shape or branched-chain alkyl.As dialkyl ether thing, diaryl ethers thing, oxolane, two uh nitrile thing, dimethyl formamide, methyl-sulfoxide isopolarity solvent, the phosphoric acid ester thing of ring-type ethers things such as alkane, ketone thing, ester class thing, acetonitrile etc., they can be two or more mixed solvents.
Reactant consumption of the present invention is 5%～30% of a formaldehyde scavenger total amount, wherein selects 5%～10% for use for best.The bleeding agent consumption is 0%～40% of a formaldehyde scavenger total amount, wherein selects 2%～10% for use for best.Stabilizing agent dosage is 0%～30% of a formaldehyde scavenger total amount, wherein selects 0.1%～10% for use for best.Water and other consumption of organic solvent are 2%～95% of formaldehyde scavenger total amount, wherein select 10%～92% for use for best.
Each method of system of the present invention is comparatively simple, above-mentioned several components in accordance with regulations content mix and then can remove artificial board surface apace and artificial board inside is not discharged into surperficial free formaldehyde.
Embodiments of the invention are as follows:
The formaldehyde removing effect is measured by the drier method among the Chinese Industrial Standards (CIS) GB 18580-2001 " formaldehyde discharges and limits the quantity of in indoor decorating material one wood-based plate and the goods thereof ".
Embodiment 1
The preparation method of the formaldehyde scavenger of present embodiment is as follows: (1) adds weight percentage in clean container be 50% deionized water, adds weight percentage and be 5% glycine, fully stirs it is dissolved fully; (2) getting an amount of concentration is that 10% NaOH joins in the above-mentioned solution, regulates pH value to 8; (3) adding weight percentage in said vesse is 6 kilograms of 5% AHs, and 2% calcium chloride fully stirs it is dissolved fully; (4) adding weight percentage in the solution that step (3) makes is 10% glycerine, and 1% vitamin C fully stirs and makes it mix, dissolve; (5) replenish deionized water to 100% again, can make formaldehyde scavenger of the present invention.Concentration of formaldehyde＜0.08mg/m after measured
3, remove effect and reach standard-required.
Embodiment 2
The preparation method of the formaldehyde scavenger of present embodiment is as follows: (1) adds weight percentage in clean container be 30% deionized water, adds weight percentage and be 5% lysine, fully stirs it is dissolved fully; (2) NaOH of getting an amount of concentration joins in the above-mentioned solution, regulates pH value to 7; (3) adding weight percentage in said vesse is 5 kilograms of 5% oxalic acid two hydrazides, and 2% magnesium chloride fully stirs it is dissolved fully; (4) adding weight percentage in the solution that step (3) makes is 1% glycerine, and 1% azone fully stirs it is dissolved fully; (5) replenish deionized water to 100% again, can make formaldehyde scavenger of the present invention.Concentration of formaldehyde＜0.08mg/m after measured
3, remove effect and reach standard-required.
Embodiment 3
The preparation method of the formaldehyde scavenger of present embodiment is as follows: (1) adds weight percentage in clean container be 40% deionized water, adds weight percentage and be 8% lysine, fully stirs it is dissolved fully; (2) NaOH of getting an amount of concentration joins in the above-mentioned solution, regulates pH value to 8; (3) adding weight percentage in said vesse is 8% malonyl hydrazine, 10% sodium hydrogensulfite, and fully stirring is dissolved it fully; (4) glycerine of adding weight percentage 1% in the solution that step (3) makes, 1% azone, 2% vitamin C fully stir it are dissolved fully; (5) replenish deionized water to 100% again, can make formaldehyde scavenger of the present invention.Concentration of formaldehyde＜0.08mg/m after measured
3, remove effect and reach standard-required.
Embodiment 4
The preparation method of the formaldehyde scavenger of present embodiment is as follows: (1) adds weight percentage in clean container be 40% deionized water, adds weight percentage and be 5% alanine, fully stirs it is dissolved fully; (2) NaOH of getting an amount of concentration joins in the above-mentioned solution, regulates pH value to 8; (3) adding weight percentage in said vesse is 8% malonyl hydrazine, 4% propane diols, and fully stirring is dissolved it fully; (4) glycerine of adding weight percentage 1% in the solution that step (3) makes, 1% azone, 4% vitamin C fully stir it are dissolved fully; (5) replenish deionized water to 100% again, can make formaldehyde scavenger of the present invention.Concentration of formaldehyde＜0.08mg/m after measured
3, remove effect and reach standard-required.
Embodiment 4
The preparation method of the formaldehyde scavenger of present embodiment is as follows: (1) adds weight percentage in clean container be 40% deionized water, adds weight percentage and be 5% alanine, fully stirs it is dissolved fully; (2) NaOH of getting an amount of concentration joins in the above-mentioned solution, regulates pH value to 8; (3) adding weight percentage in said vesse is 8% malonyl hydrazine, 4% propane diols, and fully stirring is dissolved it fully; (4) glycerine of adding weight percentage 1% in the solution that step (3) makes, 1% azone, 4% vitamin C fully stir it are dissolved fully; (5) replenish deionized water to 100% again, can make formaldehyde scavenger of the present invention.Concentration of formaldehyde＜0.08mg/m after measured
3, remove effect and reach standard-required.
Claims (6)
1. high-efficiency formaldehyde scavenging agent and preparation method thereof, it is characterized in that: its composition comprises:
(1) reactant: 5～10%;
(2) bleeding agent: 2～10%;
(3) stabilizing agent: 0.1～10%;
(4) water and other organic solvents: 65～90% compositions such as grade, more than composition is the mass percent composition.
2. a kind of new and effective formaldehyde scavenger according to claim 1, it is characterized in that: reactant refers to the amino acids material, and described amino acid includes but not limited to glycine, alanine, leucine, isoleucine, valine, cystine, cysteine, methionine etc.Described amino acid is several amino acid whose mixtures.Also comprise amine, hydrazine class, amide-type, hydrazide kind compound.
3. a kind of new and effective formaldehyde scavenger according to claim 1 is characterized in that: bleeding agent refers to one or more compositions of oleic acid, laruyl alcohol, azone, dimethyl sulfoxide (DMSO), menthol, refreshing ketone.
4. a kind of high-efficiency formaldehyde scavenging agent according to claim 1 and preparation method thereof is characterized in that: stabilizing agent is meant light stabilizer, high temperature resistant dose, antioxidant, acidproof alkaline agent.As vegetable oil, glycerine, polyacrylate, NaOH, vitamin C, sodium carbonate, sodium acetate, ammonium acetate, ammonium carbonate, sodium chloride, ammonium chloride, etc. can use separately, also can mix use.
5. a kind of new and effective methyl alcohol scavenger according to claim 1, its preparation is, above ratio is got the raw materials ready to join in the agitator respectively evenly stir, and up to abundant dissolving, makes product of the present invention through discharging, filtration, packaging process then.
6. this interior decoration pollution eliminator according to claim 1 is characterized in that:
1) can react rapidly, discharge low-grade fever, the colourless transparent liquid of formation excellent stability with formaldehyde.
2) porous is thoroughly removed the formaldehyde that does not discharge temporarily in this class material to material internals such as artificial board, chemical building material, timber, reaches the purpose of for a long time, forever removing formaldehyde.
3) pH value is between 7～10, and is nontoxic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100501752A CN101874918A (en) | 2009-04-28 | 2009-04-28 | Novel efficient formaldehyde scavenger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100501752A CN101874918A (en) | 2009-04-28 | 2009-04-28 | Novel efficient formaldehyde scavenger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101874918A true CN101874918A (en) | 2010-11-03 |
Family
ID=43017662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100501752A Pending CN101874918A (en) | 2009-04-28 | 2009-04-28 | Novel efficient formaldehyde scavenger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101874918A (en) |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012120708A (en) * | 2010-12-08 | 2012-06-28 | Yukio Yanagisawa | Aldehyde removing liquid |
| CN102671336A (en) * | 2012-05-02 | 2012-09-19 | 温州万通生物技术有限公司 | Efficient neutral formaldehyde capture agent and preparation method |
| CN102747602A (en) * | 2012-04-05 | 2012-10-24 | 龚䶮 | Formaldehyde removing reagent for treating formaldehyde-containing fabric, and use method thereof |
| CN102975247A (en) * | 2012-10-18 | 2013-03-20 | 郑丽 | Preparation method for formaldehyde elimination agent |
| CN102974067A (en) * | 2012-10-18 | 2013-03-20 | 郑丽 | Elimination method of formaldehyde |
| CN102989106A (en) * | 2012-10-18 | 2013-03-27 | 郑丽 | Formaldehyde scavenging agent |
| CN103055466A (en) * | 2011-10-19 | 2013-04-24 | 郑承伟 | Efficient formaldehyde scavenger |
| CN103418105A (en) * | 2013-09-04 | 2013-12-04 | 北京泛博化学股份有限公司 | Formaldehyde scavenging agent and preparing method thereof |
| CN103656955A (en) * | 2012-09-05 | 2014-03-26 | 中铁九局集团工程检测试验有限公司 | Environment-friendly high-efficiency formaldehyde scavenger |
| CN103739804A (en) * | 2013-12-25 | 2014-04-23 | 重庆建峰浩康化工有限公司 | Scavenger for free formaldehyde in etherified amino resin and using method thereof |
| CN104623855A (en) * | 2015-02-06 | 2015-05-20 | 山东恒诺环保科技有限公司 | Plant type formaldehyde removing agent and preparation method |
| CN104874267A (en) * | 2015-05-20 | 2015-09-02 | 上海艳紫化工科技有限公司 | Formaldehyde cleaning agent |
| CN105727718A (en) * | 2016-03-07 | 2016-07-06 | 陈金娥 | In-vehicle pollution remover |
| CN105833460A (en) * | 2016-04-22 | 2016-08-10 | 张华� | Efficient formaldehyde scavenging agent and preparation method and application thereof |
| CN106731613A (en) * | 2017-01-13 | 2017-05-31 | 永兴隆诚高新材料有限公司 | A kind of formaldehyde scavenger and preparation method thereof |
| CN107090528A (en) * | 2017-06-15 | 2017-08-25 | 四川大学 | Fur formaldehyde scavenger and preparation method thereof |
| CN107199613A (en) * | 2017-06-09 | 2017-09-26 | 安徽启威生物科技有限公司 | It is a kind of that formalin is removed based on mushroom extract solution |
| CN107553646A (en) * | 2017-09-19 | 2018-01-09 | 安徽阜南县万家和工艺品有限公司 | A kind of method for reducing Formaldehye Emission from Wood Products |
| CN107626070A (en) * | 2017-09-28 | 2018-01-26 | 河南西门子环保科技有限公司 | Administer formula of interior decoration removing residue formaldehyde and preparation method thereof |
| CN108392969A (en) * | 2018-03-09 | 2018-08-14 | 太原氦舶新材料有限责任公司 | A kind of formaldehyde removal purification spray |
| CN108865514A (en) * | 2018-06-19 | 2018-11-23 | 湖南科道尔生物科技有限公司 | It is a kind of for removing formaldehyde and the composition of heavy metal ion in infantile clothes |
| CN109401667A (en) * | 2018-11-30 | 2019-03-01 | 大亚人造板集团有限公司 | A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard |
| CN109925852A (en) * | 2019-03-20 | 2019-06-25 | 北京菲迪可环保科技有限公司 | A method of except formaldehyde composition and removal formaldehyde |
| CN111203078A (en) * | 2020-02-18 | 2020-05-29 | 南京迪天高新产业技术研究院有限公司 | Composite amino acid type formaldehyde scavenger and preparation method thereof |
| CN114471138A (en) * | 2021-12-27 | 2022-05-13 | 康瑞达（福州）环保科技有限公司 | TVOC remover and detection and removal matching device thereof |
| JP7471781B2 (en) | 2018-12-17 | 2024-04-22 | 小林製薬株式会社 | Deodorants |
-
2009
- 2009-04-28 CN CN2009100501752A patent/CN101874918A/en active Pending
Cited By (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012120708A (en) * | 2010-12-08 | 2012-06-28 | Yukio Yanagisawa | Aldehyde removing liquid |
| CN103055466A (en) * | 2011-10-19 | 2013-04-24 | 郑承伟 | Efficient formaldehyde scavenger |
| CN102747602A (en) * | 2012-04-05 | 2012-10-24 | 龚䶮 | Formaldehyde removing reagent for treating formaldehyde-containing fabric, and use method thereof |
| CN102747602B (en) * | 2012-04-05 | 2014-03-19 | 龚䶮 | Formaldehyde removing reagent for treating formaldehyde-containing fabric, and use method thereof |
| CN102671336A (en) * | 2012-05-02 | 2012-09-19 | 温州万通生物技术有限公司 | Efficient neutral formaldehyde capture agent and preparation method |
| CN102671336B (en) * | 2012-05-02 | 2015-06-24 | 温州万通生物技术有限公司 | Efficient neutral formaldehyde capture agent and preparation method |
| CN103656955A (en) * | 2012-09-05 | 2014-03-26 | 中铁九局集团工程检测试验有限公司 | Environment-friendly high-efficiency formaldehyde scavenger |
| CN102974067B (en) * | 2012-10-18 | 2014-12-24 | 郑丽 | Elimination method of formaldehyde |
| CN102975247A (en) * | 2012-10-18 | 2013-03-20 | 郑丽 | Preparation method for formaldehyde elimination agent |
| CN102974067A (en) * | 2012-10-18 | 2013-03-20 | 郑丽 | Elimination method of formaldehyde |
| CN102989106A (en) * | 2012-10-18 | 2013-03-27 | 郑丽 | Formaldehyde scavenging agent |
| CN103418105B (en) * | 2013-09-04 | 2015-10-14 | 北京泛博化学股份有限公司 | Formaldehyde scavenger and preparation method thereof |
| CN103418105A (en) * | 2013-09-04 | 2013-12-04 | 北京泛博化学股份有限公司 | Formaldehyde scavenging agent and preparing method thereof |
| CN103739804A (en) * | 2013-12-25 | 2014-04-23 | 重庆建峰浩康化工有限公司 | Scavenger for free formaldehyde in etherified amino resin and using method thereof |
| CN103739804B (en) * | 2013-12-25 | 2015-10-07 | 重庆建峰浩康化工有限公司 | The scavenging agent of etherified amino resins Free-formaldehyde and using method thereof |
| CN104623855A (en) * | 2015-02-06 | 2015-05-20 | 山东恒诺环保科技有限公司 | Plant type formaldehyde removing agent and preparation method |
| CN104874267A (en) * | 2015-05-20 | 2015-09-02 | 上海艳紫化工科技有限公司 | Formaldehyde cleaning agent |
| CN105727718A (en) * | 2016-03-07 | 2016-07-06 | 陈金娥 | In-vehicle pollution remover |
| CN105727718B (en) * | 2016-03-07 | 2018-09-25 | 陈金娥 | In-vehicle exposure scavenger |
| CN105833460A (en) * | 2016-04-22 | 2016-08-10 | 张华� | Efficient formaldehyde scavenging agent and preparation method and application thereof |
| CN106731613A (en) * | 2017-01-13 | 2017-05-31 | 永兴隆诚高新材料有限公司 | A kind of formaldehyde scavenger and preparation method thereof |
| CN107199613A (en) * | 2017-06-09 | 2017-09-26 | 安徽启威生物科技有限公司 | It is a kind of that formalin is removed based on mushroom extract solution |
| CN107199613B (en) * | 2017-06-09 | 2020-03-20 | 安徽启威生物科技有限公司 | Formaldehyde removing liquid based on mushroom extracting solution |
| CN107090528A (en) * | 2017-06-15 | 2017-08-25 | 四川大学 | Fur formaldehyde scavenger and preparation method thereof |
| CN107090528B (en) * | 2017-06-15 | 2019-07-26 | 四川大学 | Fur formaldehyde scavenger and preparation method thereof |
| CN107553646A (en) * | 2017-09-19 | 2018-01-09 | 安徽阜南县万家和工艺品有限公司 | A kind of method for reducing Formaldehye Emission from Wood Products |
| CN107626070A (en) * | 2017-09-28 | 2018-01-26 | 河南西门子环保科技有限公司 | Administer formula of interior decoration removing residue formaldehyde and preparation method thereof |
| CN108392969A (en) * | 2018-03-09 | 2018-08-14 | 太原氦舶新材料有限责任公司 | A kind of formaldehyde removal purification spray |
| CN108865514A (en) * | 2018-06-19 | 2018-11-23 | 湖南科道尔生物科技有限公司 | It is a kind of for removing formaldehyde and the composition of heavy metal ion in infantile clothes |
| CN109401667A (en) * | 2018-11-30 | 2019-03-01 | 大亚人造板集团有限公司 | A kind of formaldehyde reducing agent and its preparation method and the production applied to low burst size of methanal fiberboard |
| JP7471781B2 (en) | 2018-12-17 | 2024-04-22 | 小林製薬株式会社 | Deodorants |
| CN109925852A (en) * | 2019-03-20 | 2019-06-25 | 北京菲迪可环保科技有限公司 | A method of except formaldehyde composition and removal formaldehyde |
| CN111203078A (en) * | 2020-02-18 | 2020-05-29 | 南京迪天高新产业技术研究院有限公司 | Composite amino acid type formaldehyde scavenger and preparation method thereof |
| CN114471138A (en) * | 2021-12-27 | 2022-05-13 | 康瑞达（福州）环保科技有限公司 | TVOC remover and detection and removal matching device thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101874918A (en) | Novel efficient formaldehyde scavenger | |
| CN101007203B (en) | An amino acid type formol release agent and its preparation method | |
| CN103055466A (en) | Efficient formaldehyde scavenger | |
| CN100451084C (en) | Environmental protection type adhesion agent for wood industry | |
| CN102343134A (en) | Formaldehyde scavenging agent and preparation method thereof | |
| KR101728233B1 (en) | A method for manufacturing pellets for fuel using dis-used badges or logs after cultivation of mushrooms | |
| WO2011031929A3 (en) | Method for improved polyester resin blends for oxygen scavenging and products thereof | |
| CN102493233B (en) | Sodium hydrosulfite composition and preparation method thereof | |
| CN104857663A (en) | Formaldehyde scavenging agent for artificial board | |
| CN103272461A (en) | Technology for producing formaldehyde scavenging agent by using vegetable proteins | |
| CN104437388A (en) | Indoor methanol remover formula | |
| KR20150023187A (en) | A method for manufacturing pellets for fuel using dis-used badges or logs after cultivation of mushrooms | |
| CN103656955A (en) | Environment-friendly high-efficiency formaldehyde scavenger | |
| CN101244579B (en) | Flakeboard and method of manufacturing the same | |
| CN102671336A (en) | Efficient neutral formaldehyde capture agent and preparation method | |
| CN101486887B (en) | Formaldehyde scavenger for urea-formaldehyde glue and technique for producing the same | |
| CN101234209B (en) | Fitting up deodouring agent | |
| CN100404574C (en) | Low formaldehyde release volume urea formaldehyde resin preparation method | |
| CN103111038B (en) | Efficient formaldehyde removing agent and preparation method thereof | |
| CN110483805A (en) | A method of preparing lignosulphonates | |
| CN101629058B (en) | Solid rubber powder for man-made boards | |
| CN104474661A (en) | Formaldehyde scavenging agent for glue artificial board as well as preparation method thereof | |
| CN104383657A (en) | Preparation method of formaldehyde scavenging agent for urea-formaldehyde adhesive artificial board | |
| CN102698664B (en) | Method for preparing water microcapsule | |
| CN104875258B (en) | Except formaldehyde artificial board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Qizhou Environment Science and Technology Co., Ltd. Zhao Qin Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Qizhou Environment Science and Technology Co., Ltd. Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101103 |