CN107151327A - A kind of preparation method of add-on type liquid silicon rubber tackifier - Google Patents
A kind of preparation method of add-on type liquid silicon rubber tackifier Download PDFInfo
- Publication number
- CN107151327A CN107151327A CN201710307015.6A CN201710307015A CN107151327A CN 107151327 A CN107151327 A CN 107151327A CN 201710307015 A CN201710307015 A CN 201710307015A CN 107151327 A CN107151327 A CN 107151327A
- Authority
- CN
- China
- Prior art keywords
- add
- preparation
- silicon rubber
- type liquid
- silane
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/44—Block-or graft-polymers containing polysiloxane sequences containing only polysiloxane sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/80—Siloxanes having aromatic substituents, e.g. phenyl side groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Silicon Polymers (AREA)
Abstract
A kind of preparation method of add-on type liquid silicon rubber tackifier, belongs to chemosynthesis technical field, as follows：Two functional group's alkoxy silanes are added in reactor, acidic catalyst is well mixed with water, it is added drop-wise to while stirring in reactor at normal temperatures, it is warming up to 50 80 DEG C of 1 5h of reaction, abjection moisture and small molecule by-product are vacuumized, trifunctional alkoxy silane and metal-organic complex is added, 1 5h is reacted at 80 150 DEG C, abjection low-boiling-point substance is vacuumized, colourless to lurid product is obtained.The present invention prepares silica gel tackifier by hydrolytic condensation and graft polymerization two-step reaction, can preferably control the molecular structure of tackifier, while reducing the generation of gel；Further, since introducing metal-organic complex makees catalyst, it can also play viscosifying action during the solidification of later stage silica gel, increase the bond effect of tackifier.
Description
Technical field
The invention belongs to chemosynthesis technical field, it is related to a kind of using the alkoxy silane hydrolytic condensations preparation of two functional groups
Hydroxy silicon oil oligomer, then the sides of tackifier is prepared with trifunctional alkoxy silane reaction under metal-organic complex catalysis
Method.
Background technology
Add-on type liquid silicon rubber has excellent heatproof, ageing-resistant, anti-yellowing property, at present gradually substituted epoxy
Resin is used for Electronic Packaging field, especially high-power LED encapsulation industry.Itself strand right and wrong of organosilicon macromolecule material
Polarity, the adhesive property with other materials is poor, generally requires by using tackifier to realize the bonds well with base material.
Coupling agent is a conventional class tackifier, by adding the coupling agent of appropriate species, can be carried to a certain extent
The adhesive property of high product and base material.But it is due to that coupling agent molecule amount is relatively low, between add-on type liquid silicon rubber
Compatibility is general, under the harsh conditions such as long term high temperature, ultraviolet ageing, easily produces the situation that cohesive force declines.
Current Electronic Packaging industry develops towards miniaturization, and product size is less and less, and power is increasing,
This heatproof ageing-resistant performance to encapsulating material proposes higher requirement.Therefore, synthesis HMW has excellent thickening
The stable macromolecule tackifer of the performance of effect, improves adhesive property of the product in high temperature and long-time use with ground, protects
Card product keeps the stabilization of properties of product in prolonged severe rugged environment, is a focus and difficult point in the field.
The content of the invention
It is an object of the invention to provide a kind of preparation method of add-on type liquid silicon rubber tackifier.Synthesized using this method
Silicon rubber tackifier, can preferably control the molecular structure of product, reduce the probability that gel is produced in course of reaction, simultaneously
The compatibility of product and silicon rubber is good, with excellent heat resistance and ageing-resistant performance, it is adaptable to heat resistance requirement compared with
High Electronic Packaging field.
The present invention is achieved by the following technical solutions.
A kind of preparation method of add-on type liquid silicon rubber tackifier of the present invention, using common acid catalyst,
Condensation reaction is hydrolyzed in two functional group's alkoxy silanes at a certain temperature, hydroxy silicon oil oligomer is prepared, will be low
Aggressiveness is mixed with trifunctional alkoxy silane, and graft reaction is carried out under metal-organic complex catalysis, and reaction takes off after terminating
Except low molecule accessory substance, the tackifier product of HMW is obtained.Course of reaction is hydrolysis-condensation reaction and graft polymerization reaction.
The specific step of preparation method of the present invention is as follows：Two functional group's alkoxy silanes are added into reactor
It is interior, acidic catalyst is well mixed with water, is added drop-wise to while stirring in reactor at normal temperatures, 50-80 DEG C of reaction is warming up to
1-5h, vacuumizes abjection moisture and small molecule by-product, adds trifunctional alkoxy silane and metal-organic complex,
1-5h is reacted at 80-150 DEG C, abjection low-boiling-point substance is vacuumized, colourless to lurid product is obtained.
Two functional group of the present invention alkoxy silane includes dimethyldimethoxysil,ne, diphenyl dimethoxy silicon
Alkane, aminomethyl phenyl dimethoxysilane, methylvinyldimethoxysilane, dimethyldiethoxysilane, diphenyl diethyl
TMOS, aminomethyl phenyl diethoxy silane, methyl vinyl diethoxysilane etc., two described functional group's alkoxyl silicones
The mass ratio of alkane and water is：95-50:5-50.
Acidic catalyst of the present invention includes conventional organic acid and the nothings such as hydrochloric acid, sulfuric acid, acid-exchange resin
Machine acid.
Trifunctional alkoxy silane of the present invention include MTMS, phenyltrimethoxysila,e,
Vinyltrimethoxy silane, MTES, phenyl triethoxysilane, VTES, γ-contracting
Water glycerine ether oxygen propyl trimethoxy silicane, γ-methacryloxypropyl trimethoxy silane and other common trifunctionals
Group's silane coupler etc., described trifunctional alkoxy silane consumption is the 10-50% of oligomeric weight.
Metal-organic complex of the present invention includes titanium complex, tin complex, aluminium complex, zirconium complex etc..
It is an advantage of the invention that：Silica gel tackifier are prepared by hydrolytic condensation and graft polymerization two-step reaction, can be more preferable
Control tackifier molecular structure, while reduce gel generation；It is catalyzed further, since introducing metal-organic complex
Agent, it can also play certain viscosifying action during the solidification of later stage silica gel, increase the bond effect of tackifier.
Embodiment
The present invention will be described further by following examples.
Embodiment 1.
1000g dimethyldimethoxysil,nes are added and carry mechanical agitation, reflux condensing tube, the reactor of thermometer
In, the aqueous hydrochloric acid solution that 200g concentration is 5% is slowly added dropwise under agitation, 60 DEG C of reaction 5h are warming up to after being added dropwise to complete, are vacuumized
Remove after moisture and small molecule, add 1.5g tetra-n-butyl titanates and 300g γ-glycidyl ether oxygen propyl trimethoxy silicane,
80 DEG C of reaction 5h are warming up to, vacuumizes and is warming up to 160 DEG C and slough low-boiling-point substance, obtain light yellow clear product liquid.
Embodiment 2.
800g dimethyldimethoxysil,nes and 200g dimethoxydiphenylsilanes are added with mechanical agitation, backflow
In condenser pipe, the reactor of thermometer, the aqueous hydrochloric acid solution that 200g concentration is 5% is slowly added dropwise under agitation, is risen after being added dropwise to complete
Temperature vacuumizes after removing moisture and small molecule to 60 DEG C of reaction 5h, adds 1.5g tetra-n-butyl titanates, 50G vinyl trimethoxies
Base silane and 250g γ-glycidyl ether oxygen propyl trimethoxy silicane, are warming up to 80 DEG C of reaction 5h, vacuumize and be warming up to
160 DEG C are sloughed low-boiling-point substance, obtain light yellow clear product liquid.
Embodiment 3.
1000g dimethyldimethoxysil,nes are added and carry mechanical agitation, reflux condensing tube, the reactor of thermometer
In, the aqueous hydrochloric acid solution that 200g concentration is 5% is slowly added dropwise under agitation, 60 DEG C of reaction 5h are warming up to after being added dropwise to complete, are vacuumized
Remove after moisture and small molecule, add the organic tin complexs of 1.5g, 150g γ-glycidyl ether oxygen propyl trimethoxy silicane and
150g γ-methacryloxypropyl trimethoxy silane, be warming up to 80 DEG C reaction 5h, vacuumize and be warming up to 160 DEG C take off
Low-boiling-point substance is removed, light yellow clear product liquid is obtained.
Embodiment 4.
1000g dimethyldimethoxysil,nes are added and carry mechanical agitation, reflux condensing tube, the reactor of thermometer
In, the aqueous hydrochloric acid solution that 200g concentration is 5% is slowly added dropwise under agitation, 60 DEG C of reaction 5h are warming up to after being added dropwise to complete, are vacuumized
Remove after moisture and small molecule, add 1.5g tetra-n-butyl titanates, 200g γ-glycidyl ether oxygen propyl trimethoxy silicane and
200g γ-methacryloxypropyl trimethoxy silane, be warming up to 80 DEG C reaction 5h, vacuumize and be warming up to 160 DEG C take off
Low-boiling-point substance is removed, light yellow clear product liquid is obtained.
Tackifier performance test methods：
The containing hydrogen silicone oil and inhibitor that the vinyl-terminated silicone fluid for being 1000cs by 50g viscosity is 0.75% with 0.6G hydrogen contents are mixed
Close uniform, add 0.02g platinum catalysts, be separately added into the tackifier of embodiment preparation, addition is the 1.5% of gross mass, is stirred
Mix well mixed.Vacuumized under 0.1MPa 10 minutes.On the silica obtained sample adhesive surface being coated in advance Jing Guo surface clean,
Two panels sample adhesive surface is closed up and gently pressurizeed, is put into baking oven at 100 DEG C and solidifies 1h, takes out and electronics ten thousand is used after cooling
Can testing machine test adhesion strength.Test result is as shown in table 1.Wherein blank sample is the sample for being not added with tackifier.
Interpretation of result.
From table 1 it can be seen that, using embodiment tackifier prepare silicon rubber compared with blank silicone rubber products, its
It is obtained for and largely improves with the cohesive force of all kinds of base materials.
Table 1
Claims (5)
1. a kind of preparation method of add-on type liquid silicon rubber tackifier, it is characterized in that as follows：By two functional group's alcoxyls
Base silane is added in reactor, and acidic catalyst is well mixed with water, is added drop-wise to while stirring in reactor at normal temperatures, is risen
Temperature vacuumizes abjection moisture and small molecule by-product to 50-80 DEG C of reaction 1-5h, adds trifunctional alkoxy silane and organic
Metal complex, 1-5h is reacted at 80-150 DEG C, vacuumizes abjection low-boiling-point substance, obtains colourless to lurid product.
2. the preparation method of a kind of add-on type liquid silicon rubber tackifier according to claim 1, it is characterized in that described
Two functional group's alkoxy silanes are dimethyldimethoxysil,ne, dimethoxydiphenylsilane, aminomethyl phenyl dimethoxy silicon
Alkane, methylvinyldimethoxysilane, dimethyldiethoxysilane, diphenyl diethoxy silane, aminomethyl phenyl diethyl
TMOS or methyl vinyl diethoxysilane；The mass ratio of two functional group's alkoxy silanes and water is：95-50:5-50.
3. the preparation method of a kind of add-on type liquid silicon rubber tackifier according to claim 1, it is characterized in that described
Acidic catalyst includes hydrochloric acid, sulfuric acid or acid-exchange resin.
4. the preparation method of a kind of add-on type liquid silicon rubber tackifier according to claim 1, it is characterized in that described
Trifunctional alkoxy silane is MTMS, phenyltrimethoxysila,e, vinyltrimethoxy silane, methyl
Triethoxysilane, phenyl triethoxysilane, VTES, γ-glycidyl ether oxygen propyl trimethoxy
Silane or γ-methacryloxypropyl trimethoxy silane；Trifunctional alkoxy silane consumption is oligomeric weight
10-50%。
5. the preparation method of a kind of add-on type liquid silicon rubber tackifier according to claim 1, it is characterized in that described
Metal-organic complex is titanium complex, tin complex, aluminium complex or zirconium complex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307015.6A CN107151327A (en) | 2017-05-04 | 2017-05-04 | A kind of preparation method of add-on type liquid silicon rubber tackifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307015.6A CN107151327A (en) | 2017-05-04 | 2017-05-04 | A kind of preparation method of add-on type liquid silicon rubber tackifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107151327A true CN107151327A (en) | 2017-09-12 |
Family
ID=59792681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307015.6A Pending CN107151327A (en) | 2017-05-04 | 2017-05-04 | A kind of preparation method of add-on type liquid silicon rubber tackifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107151327A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055010A (en) * | 2019-05-10 | 2019-07-26 | 广州回天新材料有限公司 | A kind of synthesis preparation method of room temperature tackifier |
| CN111349242A (en) * | 2019-08-28 | 2020-06-30 | 江西纳恩新材料有限公司 | Preparation method of isocyanate-containing silicon rubber tackifier |
| CN113004704A (en) * | 2021-04-01 | 2021-06-22 | 湖北航泰科技有限公司 | Silicon rubber, preparation method thereof and silicon rubber elastic part |
| CN114231247A (en) * | 2021-11-30 | 2022-03-25 | 湖北双键精细化工有限公司 | Room-temperature-curing two-component addition-type self-adhesive high-temperature-resistant silica gel and preparation method thereof |
| CN116178723A (en) * | 2022-12-31 | 2023-05-30 | 江苏诚睿达光电有限公司 | Epoxy modified organic silicon resin and yellowing-resistant chip adhesive |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755963A (en) * | 2013-12-27 | 2014-04-30 | 深圳市安品有机硅材料有限公司 | Polysiloxane thickening agent and preparation method thereof |
| CN105400446A (en) * | 2015-12-18 | 2016-03-16 | 东莞市贝特利新材料有限公司 | Tackifier for high-refractive index LED liquid casting glue and preparation method thereof |
| CN105969302A (en) * | 2016-06-30 | 2016-09-28 | 郭舒洋 | Preparation method of anti-yellowing LED packaging silica gel |
-
2017
- 2017-05-04 CN CN201710307015.6A patent/CN107151327A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103755963A (en) * | 2013-12-27 | 2014-04-30 | 深圳市安品有机硅材料有限公司 | Polysiloxane thickening agent and preparation method thereof |
| CN105400446A (en) * | 2015-12-18 | 2016-03-16 | 东莞市贝特利新材料有限公司 | Tackifier for high-refractive index LED liquid casting glue and preparation method thereof |
| CN105969302A (en) * | 2016-06-30 | 2016-09-28 | 郭舒洋 | Preparation method of anti-yellowing LED packaging silica gel |
Non-Patent Citations (1)
| Title |
|---|
| 欧育湘，等: "《塑料助剂性能与选用速查手册》", 31 January 2012, 国防工业出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055010A (en) * | 2019-05-10 | 2019-07-26 | 广州回天新材料有限公司 | A kind of synthesis preparation method of room temperature tackifier |
| CN111349242A (en) * | 2019-08-28 | 2020-06-30 | 江西纳恩新材料有限公司 | Preparation method of isocyanate-containing silicon rubber tackifier |
| CN113004704A (en) * | 2021-04-01 | 2021-06-22 | 湖北航泰科技有限公司 | Silicon rubber, preparation method thereof and silicon rubber elastic part |
| CN113004704B (en) * | 2021-04-01 | 2023-11-21 | 湖北航泰科技有限公司 | Silicon rubber, preparation method thereof and silicon rubber elastic piece |
| CN114231247A (en) * | 2021-11-30 | 2022-03-25 | 湖北双键精细化工有限公司 | Room-temperature-curing two-component addition-type self-adhesive high-temperature-resistant silica gel and preparation method thereof |
| CN116178723A (en) * | 2022-12-31 | 2023-05-30 | 江苏诚睿达光电有限公司 | Epoxy modified organic silicon resin and yellowing-resistant chip adhesive |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107151327A (en) | A kind of preparation method of add-on type liquid silicon rubber tackifier | |
| CN104892942B (en) | A kind of additional organosilicon rubber tackifier and preparation method | |
| CN103342816B (en) | A kind of organic siliconresin and curable organopolysiloxane composition and application | |
| US8946369B2 (en) | Branched polysiloxanes and use of these | |
| CA2856452C (en) | Composition of olefinically functionalised siloxane oligomers based on alkoxy silanes | |
| CN105385167B (en) | Addition-type silicon rubber and preparation method thereof | |
| CN104662086B (en) | Compositions of thermosetting resin, its manufacture method, the manufacture method of resin cured matter and the method for making epoxide generation auto polymerization | |
| CN103755963A (en) | Polysiloxane thickening agent and preparation method thereof | |
| CN105524282B (en) | Organic borosilicate adhesion promoters of high refractive index and its preparation method and application | |
| KR20130094715A (en) | Polysiloxane composition, hardened material and optical device | |
| CN107674608A (en) | Silicon rubber tackifier, liquid two-component addition-type silicon rubber prepared therefrom and its application | |
| CA2855993A1 (en) | Mixtures, particularly low in volatile organic compounds (voc), of olefinically functionalised siloxane oligomers based on alkoxy silanes | |
| US9828392B2 (en) | Low chloride compositions of olefinically functionalised siloxane oligomers based on alkoxysilanes | |
| CN107629460A (en) | Organopolysiloxane composition and preparation method thereof, semiconductor devices | |
| CN106753198A (en) | A kind of transparent single-component organic silicon composition of low viscosity | |
| CN111349242A (en) | Preparation method of isocyanate-containing silicon rubber tackifier | |
| CN106554500A (en) | A kind of hydrophobically modified epoxy resin and preparation method thereof | |
| CN106065073A (en) | Vinyl polysiloxane, and its production and use | |
| JP6319606B2 (en) | LED encapsulant composition | |
| TWI757308B (en) | Formulation containing a metal aprotic organosilanoxide compound | |
| CN105778100B (en) | A kind of organic silicon rigidity-increasing stick and preparation method thereof and a kind of addition-type silicon rubber composition | |
| CN113462165A (en) | Heat-conducting organic silicon pouring sealant for inverter inductor and preparation method thereof | |
| CN104411771B (en) | Curable resin composition | |
| CN116355552B (en) | Room-temperature-curing organopolysiloxane composition and preparation method thereof | |
| CN114958246B (en) | Multifunctional auxiliary agent and preparation method thereof |
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: 20170912 |