CN110358478A - A kind of universal type industrial glue and preparation method thereof - Google Patents

A kind of universal type industrial glue and preparation method thereof Download PDF

Info

Publication number
CN110358478A
CN110358478A CN201910603085.5A CN201910603085A CN110358478A CN 110358478 A CN110358478 A CN 110358478A CN 201910603085 A CN201910603085 A CN 201910603085A CN 110358478 A CN110358478 A CN 110358478A
Authority
CN
China
Prior art keywords
parts
added
degrees celsius
universal type
type industrial
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
Application number
CN201910603085.5A
Other languages
Chinese (zh)
Inventor
王奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Hourui Technology Co Ltd
Original Assignee
Hangzhou Hourui Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hangzhou Hourui Technology Co Ltd filed Critical Hangzhou Hourui Technology Co Ltd
Priority to CN201910603085.5A priority Critical patent/CN110358478A/en
Publication of CN110358478A publication Critical patent/CN110358478A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F118/00Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F118/02Esters of monocarboxylic acids
    • C08F118/04Vinyl esters
    • C08F118/08Vinyl acetate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • C08F2/12Polymerisation in non-solvents
    • C08F2/16Aqueous medium
    • C08F2/20Aqueous medium with the aid of macromolecular dispersing agents
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J131/00Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
    • C09J131/02Homopolymers or copolymers of esters of monocarboxylic acids
    • C09J131/04Homopolymers or copolymers of vinyl acetate

Abstract

The invention discloses a kind of universal type industrial glue and, the raw material including following parts by weight: 40-50 parts of polyvinyl alcohol, 3-5 parts of formaldehyde, 2-5 parts of hydrochloric acid, 6-9 parts of sodium hydroxide, 2 parts of whole chain agent, 400-600 parts of water, 300-420 parts of vinylacetate, 4-6 parts of OP-10,36-39 parts of dibutyl phthalate, 0.2-0.8 parts of potassium peroxydisulfate.By adopting the above technical scheme, the technique is stable in process of production, and anti-freezing property is be not in freeze for subzero 3-5 degrees Celsius the phenomenon that;And relative to the industrial glue of 1788 type polyvinyl alcohol production, production cost is lower.

Description

A kind of universal type industrial glue and preparation method thereof
Technical field
The present invention relates to industrial glue technical field, a kind of universal type industrial glue and preparation method thereof is referred specifically to.
Background technique
Industrial glue is industrially used for the technology that homogeneous or heterogeneous surface is linked together with adhesive, adhesive It is continuous with stress distribution, it is light-weight, or the features such as sealing.Polyvinyl acetate emulsion is commonly called as white glue, is one of the most common type Industrial adhesive.However, there is seasonal problems for the production of the glue, produced in winter using polyvinyl alcohol (1799 type) White glue, there is will freeze and be not available when being lower than 5 degrees Celsius.Some producers use the polyethylene of import in winter Alcohol (1788 types or 217 types) produces white glue, although the problem of can solve resistance to jelly, 1788 types or 217 types are relative to 1799 types For price it is much higher.
Summary of the invention
The present invention is insufficient according to prior art, proposes a kind of universal type industrial glue and preparation method thereof, cost of manufacture It is cheap, and will not freeze at low ambient temperatures, use scope is wider.
In order to solve the above-mentioned technical problem, the technical solution of the present invention is as follows:
A kind of universal type industrial glue, the raw material including following parts by weight: 40-50 parts of polyvinyl alcohol, 3-5 parts of formaldehyde, 2-5 parts of hydrochloric acid, 6-9 parts of sodium hydroxide, 2 parts of whole chain agent, 400-600 parts of water, 300-420 parts of vinylacetate, OP-104-6 parts, 36-39 parts of dibutyl phthalate, 0.2-0.8 parts of potassium peroxydisulfate.
Preferably, the polyvinyl alcohol is 1799 types.
Preferably, the OP-10 is nonionic surfactant alkyl phenol polyoxyethylene ether.
A kind of preparation method of universal type industrial glue, successively the following steps are included: including prepared by raw material preparation and finished product,
Wherein material preparation step includes,
Step 1: by load weighted polyvinyl alcohol and 95% load weighted water is taken successively to be added in a reaction kettle, stirring is risen Temperature keeps the temperature 3 hours to 90-98 degrees Celsius;
Step 2: it is cooling after heat preservation, it is cooled to room temperature and hydrochloric acid, adjusting pH value to 1 is added dropwise, and stir 10 minutes;
Step 3: formaldehyde is added dropwise;
Step 4: carrying out condensation reaction after formaldehyde completion of dropwise addition;
Step 5: condensation terminal, i.e. addition sodium hydroxide solution is neutralized to PH7-7.5, stirs 10 minutes;
Step 6: whole chain agent is added in 45 degrees Celsius of heat preservation half an hour;
Step 7: being cooled to room temperature and vacuumizing half an hour to get freeze proof protecting colloid.
Preferably, wherein finished product preparation step includes:
Step 8: squeezing into protecting colloid described in step 7 into a polymeric kettle, while OP-10 and 70% is added Load weighted potassium peroxydisulfate simultaneously covers, and 20% load weighted vinylacetate is added;
Step 9: stirring 10 minutes, after being warming up to 60 degrees Celsius, stop heating, it is allowed to flow back;
Step 10: remaining vinyl acetate is added dropwise and potassium peroxydisulfate carries out polymerization reaction after reflux;
Step 11: allowing it to be warming up to 85 degrees Celsius after vinyl acetate completion of dropwise addition and keeping the temperature 1 hour;
Step 12: being cooled to 70-75 degrees Celsius after heat preservation, o-2 potassium acid dibutyl ester is added;
Step 13: temperature is down to 60 degrees Celsius, 10% solution of sodium bicarbonate is added;
Step 14: stirring 15 minutes, discharge finished product.
Preferably, formaldehyde is added dropwise in the step 3, rate of addition control was dripped off at 40 minutes.
Preferably, the step 4 kind condensation reaction is specifically that occur half milky white for heat preservation to solution after formaldehyde completion of dropwise addition Color, as condensation terminal.
Preferably, the step 10 is specifically that remaining vinyl acetate is added dropwise, remaining persulfuric acid is added after being added dropwise 2 hours Potassium, and a potassium peroxydisulfate is added at interval of half an hour, entire polymeric reaction temperature control is at 80-85 degrees Celsius.
Preferably, the step 11 vinyl acetate was completed to be added dropwise within 7 hours.
The present invention have the characteristics that it is following and the utility model has the advantages that
By adopting the above technical scheme, the technique is stable in process of production, and anti-freezing property will not go out at subzero 3-5 degrees Celsius The phenomenon that now freezing;And relative to the industrial glue of 1788 type polyvinyl alcohol production, production cost is lower.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", Be merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, term " first ", " second " etc. is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated skill The quantity of art feature.The feature for defining " first ", " second " etc. as a result, can explicitly or implicitly include one or more Multiple this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can To be mechanical connection, it is also possible to be electrically connected;It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition Concrete meaning in the present invention.
Embodiment 1
A kind of universal type industrial glue is present embodiments provided, the raw material including following parts by weight: 40 parts of polyvinyl alcohol, 3 parts of formaldehyde, 2 parts of hydrochloric acid, 6 parts of sodium hydroxide, 2 parts of whole chain agent, 400 parts of water, 3000 parts of vinylacetate, OP-104 parts, adjacent benzene 36 parts of dibutyl carboxylic acid, 0.2 part of potassium peroxydisulfate.
Preferably, the polyvinyl alcohol is 1799 types.
Preferably, the OP-10 is nonionic surfactant alkyl phenol polyoxyethylene ether.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, the raw material including following parts by weight: 45 parts of polyvinyl alcohol, formaldehyde 4 parts, 3.5 parts of hydrochloric acid, 7 parts of sodium hydroxide, 2 parts of whole chain agent, 500 parts of water, 360 parts of vinylacetate, OP-105 parts, O-phthalic 37.5 parts of dibutyl phthalate, 0.6 part of potassium peroxydisulfate.
Embodiment 3
The present embodiment the difference from embodiment 1 is that, the raw material including following parts by weight: 40-50 parts of polyvinyl alcohol, 5 parts of formaldehyde, 5 parts of hydrochloric acid, 9 parts of sodium hydroxide, 2 parts of whole chain agent, 600 parts of water, 420 parts of vinylacetate, OP-106 parts, adjacent benzene two 39 parts of formic acid dibutyl ester, 0.8 part of potassium peroxydisulfate.
According to above-described embodiment compared with traditional glue carries out experiment, specific relatively data such as table 1:
Table 1
Embodiment 4
The present invention also provides a kind of preparation methods of universal type industrial glue, successively the following steps are included: including raw material Preparation and finished product preparation,
Wherein material preparation step includes,
Step 1: by load weighted polyvinyl alcohol and 95% load weighted water is taken successively to be added in a reaction kettle, stirring is risen Temperature keeps the temperature 3 hours to 90-98 degrees Celsius;
Step 2: it is cooling after heat preservation, it is cooled to room temperature and hydrochloric acid, adjusting pH value to 1 is added dropwise, and stir 10 minutes;
Step 3: formaldehyde is added dropwise;
Step 4: carrying out condensation reaction after formaldehyde completion of dropwise addition;
Step 5: condensation terminal, i.e. addition sodium hydroxide solution is neutralized to PH7-7.5, stirs 10 minutes;
Step 6: whole chain agent is added in 45 degrees Celsius of heat preservation half an hour;
Step 7: being cooled to room temperature and vacuumizing half an hour to get freeze proof protecting colloid.
The further setting of the present embodiment, wherein finished product preparation step include:
Step 8: squeezing into protecting colloid described in step 7 into a polymeric kettle, while OP-10 and 70% is added Load weighted potassium peroxydisulfate simultaneously covers, and 20% load weighted vinylacetate is added;
Step 9: stirring 10 minutes, after being warming up to 60 degrees Celsius, stop heating, it is allowed to flow back;
Step 10: remaining vinyl acetate is added dropwise and potassium peroxydisulfate carries out polymerization reaction after reflux;
Step 11: allowing it to be warming up to 85 degrees Celsius after vinyl acetate completion of dropwise addition and keeping the temperature 1 hour;
Step 12: being cooled to 70-75 degrees Celsius after heat preservation, o-2 potassium acid dibutyl ester is added;
Step 13: temperature is down to 60 degrees Celsius, sodium bicarbonate is added, sodium bicarbonate is that the sodium bicarbonate that concentration is 10% is molten Liquid;
Step 14: stirring 15 minutes, discharge finished product.
Specifically, formaldehyde is added dropwise in the step 3, rate of addition control was dripped off at 40 minutes.
Specifically, the step 4 kind condensation reaction is specifically that occur half milky white for heat preservation to solution after formaldehyde completion of dropwise addition Color, as condensation terminal.
Specifically, the step 10 is specifically that remaining vinyl acetate is added dropwise, remaining persulfuric acid is added after being added dropwise 2 hours Potassium, and a potassium peroxydisulfate is added at interval of half an hour, entire polymeric reaction temperature control is at 80-85 degrees Celsius.
Specifically, the step 11 vinyl acetate was completed to be added dropwise within 7 hours.
It in above-mentioned technical proposal, is learnt according to research, hydrogen bond is the root that glue freezes, therefore to solve the problems, such as to freeze It just needs to reduce the active force of hydrogen bond, that is, reduces the quantity of hydroxyl, therefore use polyvinyl alcohol contracting first under the conditions of certain temperature The quantity of the method reduction-OH of aldehyde, while it being allowed to form Liu Yuanhuan to greatest extent, increase steric hindrance, while whole chain agent is added and subtracts Few branch degree.
Specifically, hydrochloric acid is added in step 2 as catalyst, in the condensation reaction, catalyst, which is added, can greatly speed up contracting The speed of reaction is closed, and hydrochloric acid when concentration is 1, obtains best catalytic effect as catalyst.
Specifically, formaldehyde is added dropwise in step 3, formaldehyde is that reactant plays very big influence to condensation reaction naturally, and concentration is big Reaction rate is fast, but for the protecting colloid for preparing freeze proof glue after condensation product forms a certain number of hexatomic rings, just It is unnecessary to prevent going on smoothly for polymerization reaction because of the presence of formaldehyde with the presence of formaldehyde.Also therefore, in aldolisation knot Shu Hou, it is necessary to dispose formaldehyde, therefore oxidant need to be added in step 6, with oxidation of formaldehyde at carbon dioxide and water.
Specifically, even if controlling temperature well, but also inevitably having many branches due to the complexity of condensation reaction Structure generates, and branched structure is unfavorable to production glue and frost resistance, therefore uses the whole chain agent of addition and he is organized into straight chain Or the molecular state that branch is less.
Above the embodiments of the present invention are described in detail, but the present invention is not limited to described embodiments.It is right It include portion to these embodiments in the case where not departing from the principle of the invention and spirit for those skilled in the art Part carries out a variety of change, modification, replacement and modification, still falls in protection scope of the present invention.

Claims (7)

1. a kind of universal type industrial glue, which is characterized in that the raw material including following parts by weight: 40-50 parts of polyvinyl alcohol, first 3-5 parts of aldehyde, 2-5 parts of hydrochloric acid, 6-9 parts of sodium hydroxide, 2 parts of whole chain agent, 400-600 parts of water, 300-420 parts of vinylacetate, OP- 10 4-6 parts, 36-39 parts of dibutyl phthalate, 0.2-0.8 parts of potassium peroxydisulfate.
2. universal type industrial glue according to claim 1, which is characterized in that the polyvinyl alcohol is 1799 types.
3. universal type industrial glue according to claim 1, which is characterized in that the OP-10 is non-ionic surface active Agent alkyl phenol polyoxyethylene ether.
4. the method for preparing universal type industrial glue described in any one of claims 1 to 3, which is characterized in that successively include Following steps: preparing including raw material preparation and finished product,
Wherein material preparation step includes,
Step 1: by load weighted polyvinyl alcohol and 95% load weighted water is taken successively to be added in a reaction kettle, stirring is warming up to 90-98 degrees Celsius, and keep the temperature 3 hours;
Step 2: it is cooling after heat preservation, it is cooled to room temperature and hydrochloric acid, adjusting pH value to 1 is added dropwise, and stir 10 minutes;
Step 3: formaldehyde is added dropwise;
Step 4: carrying out condensation reaction after formaldehyde completion of dropwise addition;
Step 5: condensation terminal, i.e. addition sodium hydroxide solution is neutralized to PH7-7.5, stirs 10 minutes;
Step 6: whole chain agent is added in 45 degrees Celsius of heat preservation half an hour;
Step 7: being cooled to room temperature and vacuumizing half an hour to get freeze proof protecting colloid.
5. the preparation method of universal type industrial glue according to claim 4, which is characterized in that
Wherein finished product preparation step includes:
Step 8: squeezing into protecting colloid described in step 7 into a polymeric kettle, while OP-10 and 70% is added and weighs Potassium peroxydisulfate and capping, be added 20% load weighted vinylacetate;
Step 9: stirring 10 minutes, after being warming up to 60 degrees Celsius, stop heating, it is allowed to flow back;
Step 10: remaining vinyl acetate is added dropwise and potassium peroxydisulfate carries out polymerization reaction after reflux;
Step 11: allowing it to be warming up to 85 degrees Celsius after vinyl acetate completion of dropwise addition and keeping the temperature 1 hour;
Step 12: being cooled to 70-75 degrees Celsius after heat preservation, o-2 potassium acid dibutyl ester is added;
Step 13: temperature is down to 60 degrees Celsius, 10% solution of sodium bicarbonate is added;
Step 14: stirring 15 minutes, discharge finished product.
6. the preparation method of universal type industrial glue according to claim 4, which is characterized in that be added dropwise in the step 3 Formaldehyde, rate of addition control were dripped off at 40 minutes.
7. the preparation method of universal type industrial glue according to claim 5, which is characterized in that the step 10 is specifically Remaining vinyl acetate is added dropwise, adds remaining potassium peroxydisulfate after being added dropwise 2 hours, and add a persulfuric acid at interval of half an hour Potassium, entire polymeric reaction temperature control is at 80-85 degrees Celsius.
CN201910603085.5A 2019-07-05 2019-07-05 A kind of universal type industrial glue and preparation method thereof Pending CN110358478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910603085.5A CN110358478A (en) 2019-07-05 2019-07-05 A kind of universal type industrial glue and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910603085.5A CN110358478A (en) 2019-07-05 2019-07-05 A kind of universal type industrial glue and preparation method thereof

Publications (1)

Publication Number Publication Date
CN110358478A true CN110358478A (en) 2019-10-22

Family

ID=68218305

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910603085.5A Pending CN110358478A (en) 2019-07-05 2019-07-05 A kind of universal type industrial glue and preparation method thereof

Country Status (1)

Country Link
CN (1) CN110358478A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1078986A (en) * 1992-05-21 1993-12-01 郭湘泗 The white latex paint production technology
CN1089292A (en) * 1993-01-04 1994-07-13 郭静峰 The manufacture method of white glue with vinyl
CN101760157A (en) * 2008-10-16 2010-06-30 张起明 White latex capable of resisting low temperature
CN106987220A (en) * 2017-05-03 2017-07-28 安徽忠盛新型装饰材料有限公司 The formula and manufacturing process of a kind of white glue with vinyl

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1078986A (en) * 1992-05-21 1993-12-01 郭湘泗 The white latex paint production technology
CN1089292A (en) * 1993-01-04 1994-07-13 郭静峰 The manufacture method of white glue with vinyl
CN101760157A (en) * 2008-10-16 2010-06-30 张起明 White latex capable of resisting low temperature
CN106987220A (en) * 2017-05-03 2017-07-28 安徽忠盛新型装饰材料有限公司 The formula and manufacturing process of a kind of white glue with vinyl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
俞才林: "采用聚乙烯醇(1799型)制备抗冻白胶水", 《化学与粘合》 *

Similar Documents

Publication Publication Date Title
CN105254603B (en) The synthesis technique of SMIA
CN112430181B (en) Preparation method of 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate
CN110358478A (en) A kind of universal type industrial glue and preparation method thereof
CN103641696B (en) Method for synthesizing dihydroxypropyl bisphenol A ether through one-step process
CN107163946A (en) A kind of high temperature resistant hydrophobicity quantum dot fluorescence powder material preparation method
CN110396382A (en) Universal freeze proof industrial glue of one kind and preparation method thereof
CN112047825A (en) Production process of dichloro pinacolone
CN102617385B (en) Methylene method for producing acetochlor
CN107488108A (en) A kind of synthetic method of chloro phenoxy acetic acid or chlorophenol
CN101838180B (en) Production technique of m-bromofluorobenzene
CN105585465B (en) A kind of 3,3 dimethyl butyraldehyde preparation technologies and preparation facilities
CN110272343A (en) A kind of starlike molecular structure Hinered phenols antioxidant and its synthesis and application
CN104557637A (en) Dehydration control method for synthesis of bisphenol S
CN101704843B (en) Glyphosate continuous desolventizing production process
CN1958543A (en) Method for preparing fat to control oxidation product by using gas lift type common loop reactor
CN102584558A (en) Preparation method of 1-(4-chlorphenyl)-2-cyclopropyl-1-acetone
CN104710613B (en) A kind of solvothermal preparation method of semiaromatic polyamide composition
CN101343288B (en) Hydrolyzation method in glyphosate acid preparation process
CN102260285A (en) Production method of gamma-methacrylic acyloxy propyl trimethoxy silane
CN104736573B (en) Method for producing (meth)acrylic-modified polybutadiene
CN102964581B (en) Preparation method of butanedioic anhydride polyester polyols
CN112574125A (en) Method for improving conversion rate of azoxystrobin
CN107118085B (en) Synthetic method of 3, 4-heptanedione
CN108329499A (en) A kind of water resistant oil resistant plastic preparation method and its water resistant oil resistant plastics
CN205731217U (en) A kind of high-efficiency acetic acid ethyl ester reactor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20191022