CN106117479A - Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent - Google Patents
Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent Download PDFInfo
- Publication number
- CN106117479A CN106117479A CN201610618092.9A CN201610618092A CN106117479A CN 106117479 A CN106117479 A CN 106117479A CN 201610618092 A CN201610618092 A CN 201610618092A CN 106117479 A CN106117479 A CN 106117479A
- Authority
- CN
- China
- Prior art keywords
- product
- bisphenol
- temperature
- epoxy resin
- hour
- 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
- C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
- C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
- C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
- C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
-
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- 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
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Epoxy Resins (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The invention discloses a kind of manufacture method utilizing bisphenol-A by-product synthetic epoxy resin firming agent, including: the bisphenol-A by-product mixed phenol of 1moL is put in reactor by (1), carries out dripping 0.65 2.30moL ethylenediamine and carry out reacting 0.5 2 hours between 20～60 DEG C；(2) at a temperature of 40～55 DEG C, put into 0.5 2.5moL paraformaldehyde solid in batches, fed intake in 0.5 4.5 hours complete, maintain 0.5 3.5 hours at a temperature of 45 75 DEG C after feeding intake；(3) maintain the water that Bi Jinhang heating recovered under reduced pressure reaction generates, recovered temperature≤70 DEG C/more than 0.086Mpa, the water of recovery, recycle after carrying out content analysis；(4) recovery is finished, and regulates viscosity with tributyl phosphate, then maintains 0.5 2 hours；(5) remaining complete, cold filtration blowing is packed, and obtains phenol aldehyde modified amine finished product.The inventive method is easy, good product performance.
Description
Technical field
The present invention relates to the manufacture method of a kind of synthetic epoxy resin firming agent.
Background technology
Produced by-product (mixed phenol) when bisphenol-A by-product refers to produce bisphenol-A, by bisphenol-A isomer, fragrance list
Unit's phenol, the fragrance composition such as dihydric phenol, aromatic polycarboxylic phenol.Generally bisphenol-A by-product (mixed phenol) is centralized recovery use for sale
In making phenolic resin, never have preferable solution for processing this by-product, need the most especially to spend to burn
Burn.
Summary of the invention
It is an object of the invention to provide that a kind of method is easy, good product performance utilize bisphenol-A by-product synthesizing epoxy
The manufacture method of resin curing agent.
The technical solution of the present invention is:
A kind of manufacture method utilizing bisphenol-A by-product synthetic epoxy resin firming agent, is characterized in that: include following step
Rapid:
(1) the bisphenol-A by-product mixed phenol of 1moL is put in reactor, carry out dripping 0.65-between 20～60 DEG C
2.30moL ethylenediamine carries out reaction 0.5-2 hour；
(2) at a temperature of 40～55 DEG C, 0.5-2.5moL paraformaldehyde solid is put in batches, in 0.5-4.5 hour
Feed intake complete, maintain 0.5-3.5 hour at a temperature of 45-75 DEG C after feeding intake；
(3) water that maintenance Bi Jinhang heating recovered under reduced pressure reaction generates, more than recovered temperature≤70 DEG C/-0.086Mpa,
The water reclaimed, recycles after carrying out content analysis；
(4) recovery is finished, and regulates viscosity with tributyl phosphate, then maintains 0.5-2 hour；
(5) remaining complete, cold filtration blowing is packed, and obtains phenol aldehyde modified amine finished product.
The present invention uses bisphenol-A by-product (mixed phenol), primary amine (ethylenediamine, hexamethylene diamine) and the paraformaldehyde (degree of polymerization
20-40, compare solution formaldehyde for can reduce discharge of wastewater 2/3) etc. raw material to manufacture phenol aldehyde modified amine (epoxy resin cure
Agent).This epoxy curing agent and epoxy resin with the use of, have that abnormal smells from the patient is low, nontoxic, cheap, can be quick under low temperature
Solidification, also can form closely knit excellent film, anticorrosion and the mechanicalness advantage such as preferably, and these product right and wrong at moist surface
Inflammable thing transport is more convenient.This firming agent is to make epoxide coal bituminous coating and the ideal material of anticorrosive paint, extensively
It is applied to the anticorrosive paints such as thermoelectricity chimney inside and outside wall, port equipment, bridge, steel pipe；Patching material is made in civil construction field；
Adhesive used by ferrum-plastics etc..
The classical production process of phenol aldehyde modified amine (epoxy curing agent): be usually by phenol, liquid formaldehyde and second two
Amine is through Mannich reaction (Mannich reacts, and is called for short Man reaction), more i.e. can get phenol aldehyde modified amine (ring through suitable process
Epoxy resins firming agent).Phenol aldehyde modified amine (epoxy curing agent) high comprehensive performance manufactured by the method, but market price
Higher, and in process of production owing to more waste water can be produced after using liquid formaldehyde reaction, affect environment, do not meet environmental protection
Requirement, additionally this product contains certain solvent so that volatizable material is more, affects the safety of Product transport.Use bisphenol-A
By-product (mixed phenol) adds phosphoric acid after primary amine (ethylenediamine, hexamethylene diamine) and paraformaldehyde (degree of polymerization 20-40) synthesis
Phenol aldehyde modified amine (epoxy curing agent) combination property that tributyl obtains after carrying out latting drown with tradition phenol, liquid formaldehyde with
Equally, the waste water produced in production process is traditional method to the phenol aldehyde modified amine (epoxy curing agent) that ethylenediamine manufactures
2/3, and tributyl phosphate is relatively stable the most volatile, does not affect environment, and solidfied material anticorrosion is excellent, exothermic peak is low, is difficult to implode,
Product surface is bright and clean smooth, good mechanical performance.
Finished product technical specification and analysis
1) phenol aldehyde modified amine (epoxy curing agent) technology quality index such as following table.
Table 1: resin finished product technical specification
| Project | Quality index |
| Outward appearance | Brownish red transparency liquid |
| Amine number, mgKOH/g | ≤520 |
| Viscosity, mPa.S | ≤2500 |
2) phenol aldehyde modified amine (epoxy curing agent) antiseptic property and water absorption rate tables of data
With bisphenol A type epoxy resin 0164/618 (E-51) and 5034A weight ratio 4:1 25 DEG C/24h solidfied material test (knot
Fruit is shown in Table 2).
Table 2:
◎: size or weight have almost no change, also almost without the change of physical property.△: can necessarily be corroded.
Zero: size or weight change, the change in terms of physical property is less.×: can suffer erosion.
Note: epoxy curing agent (phenol aldehyde modified amine) synthesized in 5034A firming agent i.e. the application
3) pliability is higher, this new modified pnenolic aldehyde amine hardener product relatively traditional product have preferable mechanical property and
Toughness is higher, and concrete condition is as shown in Figure 1.
Table 3: product of the present invention compares with traditional product partial properties
Note: 1. this experiment is based on bisphenol A type epoxy resin 0164 (E-51), and condition of cure is epoxy resin: solidification
Agent is 4:1,40 DEG C；Test apparatus is epoxy resin cure instrument.
The most 1. ML minimum torque；MH high torque；Tg minimum torque rose for 0.1 corresponding time；
Product of the present invention with tradition modified phenolic amine hardener T-31 compared with in whole solidification process curing rate more flat
Slow, exothermic peak is not violent, can reach peak torque and toughness is preferable, and the process of whole solidification determines use, and I takes charge of new modified
The product appearance of pnenolic aldehyde amine hardener solidification is smooth, and curing performance is excellent.
4) bisphenol-A by-product (mixed phenol) and the mol ratio of paraformaldehyde, if bisphenol-A by-product (mixed phenol) large percentage
Time, phenol aldehyde modified amine (epoxy curing agent) fragility is the biggest, therefore bisphenol-A by-product (mixed phenol) and paraformaldehyde
Mol ratio is between 1:0.5-2.5mol.
5) bisphenol-A by-product (mixed phenol) and ethylenediamine, the mol ratio of hexamethylene diamine, if bisphenol-A by-product (mixed phenol) with
Ethylenediamine, hexamethylene diamine mol ratio less time, the molecular weight of phenol aldehyde modified amine (epoxy curing agent) epoxy resin is corresponding the most relatively
Greatly, viscosity increases accordingly, can be decreased obviously with the solidification rate of epoxy resin, cause application difficult.Therefore bisphenol-A by-product
(mixed phenol) is preferred little over amount with the mol ratio of ethylenediamine, hexamethylene diamine, typically at 1:0.65-2.3mol.
6) this new modified pnenolic aldehyde amine hardener contains a certain amount of tributyl phosphate so that this product need not as passing
The modified phenolic amine hardener of system equally adds ethanol, also makes this product can be accredited as non-dangerous article so that whole product
Transporting more convenient, traffic expense is relatively low.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is that product of the present invention compares schematic diagram with tradition T-31 firming agent mechanical property.
Detailed description of the invention
A kind of manufacture method utilizing bisphenol-A by-product synthetic epoxy resin firming agent, comprises the following steps:
(1) the bisphenol-A by-product mixed phenol of 1moL is put in reactor, carry out dripping 0.65-between 20～60 DEG C
2.30moL ethylenediamine carries out reaction 0.5-2 hour；
(2) at a temperature of 40～55 DEG C, 0.5-2.5moL paraformaldehyde solid is put in batches, in 0.5-4.5 hour
Feed intake complete, maintain 0.5-3.5 hour at a temperature of 45-75 DEG C after feeding intake；
(3) maintain the water that Bi Jinhang heating recovered under reduced pressure reaction generates, more than recovered temperature≤70 DEG C/-0.086Mpa, return
The water received, recycles after carrying out content analysis.
(4) recovery is finished, and cools down middle control analysis technical specification, after qualified, regulates viscosity with tributyl phosphate, to viscosity
(mPa.S)≤2500, then maintain 0.5-2 hour.
(5) remaining complete, cold filtration blowing is packed.Obtain phenol aldehyde modified amine (epoxy curing agent) finished product.Finished product divides
Analysis checks epoxy curing agent product routinely to carry out.
Concrete application examples can be shown in table below (consumption in table below is mass fraction):
Example 1
| Material name | 1 | 2 | 3 | 4 |
| Mixed phenol | 395 | 282 | 376 | 517 |
| Paraformaldehyde | 316 | 180 | 300 | 83 |
| Ethylenediamine | 165 | 414 | 240 | 215 |
| Tributyl phosphate | 70 | 70 | 74 | 65 |
Example 2
| Material name | 1 | 2 | 3 | 4 |
| Mixed phenol | 517 | 508 | 470 | 342 |
| Paraformaldehyde | 91 | 114 | 105 | 219 |
| Ethylenediamine | 248 | 260 | 270 | 327 |
| Tributyl phosphate | 69 | 71 | 68 | 71 |
Example 3 such as following table:
Example 3
| Material name | 1 | 2 | 3 | 4 |
| Mixed phenol | 423 | 342 | 339 | 329 |
| Paraformaldehyde | 135 | 164 | 249 | 189 |
| Ethylenediamine | 270 | 327 | 281 | 399 |
| Tributyl phosphate | 67 | 67 | 70 | 73 |
Example 4 such as following table:
Example 4
Example 5 such as following table:
Example 5
| Material name | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| 0164/618(E-51) | 75 | 80 | 72 | 65 | 78 | 72 | 70 | 75 | 75 |
| Benzyl alcohol glycidyl ether 3692 | 5 | 2 | |||||||
| Furane resins | 25 | 20 | 28 | 30 | 20 | 28 | 30 | 25 | 25 |
| The phenol aldehyde modified amine of 5034A (ethylenediamine) | 28 | 25 | 25 | 25 | 25 | ||||
| The phenol aldehyde modified amine of 5035A (hexamethylene diamine) | 35 | 35 | |||||||
| Tradition T-31 firming agent | 25 | 25 | |||||||
| Hardness SD | 77 | 75 | 77 | 78 | 79 | 80 | 80 | 79 | 77 |
Excellent product performance.
Claims (1)
1. utilize a manufacture method for bisphenol-A by-product synthetic epoxy resin firming agent, it is characterized in that: comprise the following steps:
(1) the bisphenol-A by-product mixed phenol of 1moL is put in reactor, carry out dripping 0.65-between 20～60 DEG C
2.30moL ethylenediamine carries out reaction 0.5-2 hour；
(2) at a temperature of 40～55 DEG C, put into 0.5-2.5moL paraformaldehyde solid in batches, fed intake in 0.5-4.5 hour
Complete, maintain 0.5-3.5 hour at a temperature of 45-75 DEG C after feeding intake；
(3) water that maintenance Bi Jinhang heating recovered under reduced pressure reaction generates, more than recovered temperature≤70 DEG C/-0.086Mpa, recovery
Water, recycles after carrying out content analysis；
(4) recovery is finished, and regulates viscosity with tributyl phosphate, then maintains 0.5-2 hour；
(5) remaining complete, cold filtration blowing is packed, and obtains phenol aldehyde modified amine finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618092.9A CN106117479A (en) | 2016-08-01 | 2016-08-01 | Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610618092.9A CN106117479A (en) | 2016-08-01 | 2016-08-01 | Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106117479A true CN106117479A (en) | 2016-11-16 |
Family
ID=57255122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610618092.9A Pending CN106117479A (en) | 2016-08-01 | 2016-08-01 | Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106117479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898516A (en) * | 2019-12-03 | 2021-06-04 | 南通星辰合成材料有限公司 | Phenolic aldehyde modified amine and preparation method thereof |
| CN115386092A (en) * | 2022-08-11 | 2022-11-25 | 金发科技股份有限公司 | Epoxy resin modified polyformaldehyde, polyformaldehyde composition, and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319042A (en) * | 2007-06-08 | 2008-12-10 | 上海美东生物材料有限公司 | Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof |
| CN101508764A (en) * | 2009-03-13 | 2009-08-19 | 胡高平 | High-performance pnenolic aldehyde amine hardener for epoxy resin and preparation thereof |
| CN104744653A (en) * | 2015-04-01 | 2015-07-01 | 南通星辰合成材料有限公司 | Method for synthesizing epoxy curing agent from bisphenol propane by-products |
-
2016
- 2016-08-01 CN CN201610618092.9A patent/CN106117479A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319042A (en) * | 2007-06-08 | 2008-12-10 | 上海美东生物材料有限公司 | Low-viscosity cardanol solidifying agent of epoxy resin and preparation method thereof |
| CN101508764A (en) * | 2009-03-13 | 2009-08-19 | 胡高平 | High-performance pnenolic aldehyde amine hardener for epoxy resin and preparation thereof |
| CN104744653A (en) * | 2015-04-01 | 2015-07-01 | 南通星辰合成材料有限公司 | Method for synthesizing epoxy curing agent from bisphenol propane by-products |
Non-Patent Citations (2)
| Title |
|---|
| 刘守贵等: "环氧树脂特种固化剂的研制与应用", 《第十二次全国环氧树脂应用技术学术交流会论文集》 * |
| 韩长日等: "《精细有机化工产品生产技术手册（下卷）》", 30 June 2010 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112898516A (en) * | 2019-12-03 | 2021-06-04 | 南通星辰合成材料有限公司 | Phenolic aldehyde modified amine and preparation method thereof |
| CN112898516B (en) * | 2019-12-03 | 2023-05-12 | 南通星辰合成材料有限公司 | Phenolic aldehyde modified amine and preparation method thereof |
| CN115386092A (en) * | 2022-08-11 | 2022-11-25 | 金发科技股份有限公司 | Epoxy resin modified polyformaldehyde, polyformaldehyde composition, and preparation method and application thereof |
| CN115386092B (en) * | 2022-08-11 | 2023-12-15 | 金发科技股份有限公司 | Epoxy resin modified polyformaldehyde, polyformaldehyde composition, and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jaillet et al. | New biobased epoxy materials from cardanol | |
| EP3416997B1 (en) | Hardener for low-emission epoxy resin compositions | |
| CN105175687B (en) | The preparation method of Diamond Search high-flexibility aqueous epoxy resin curing agent | |
| CN102250525B (en) | Coating used on internal surface of oil pipe for conveying crude oil and petroleum products and preparation method thereof | |
| US10144843B2 (en) | Epoxy composition | |
| CN105408384A (en) | Aminic hardeners with improved chemical resistance | |
| CN105131227B (en) | A kind of use for synthetic leather UV cured flame-retardant polyurethane and preparation method thereof | |
| CN105602403A (en) | Solvent-free epoxy anticorrosive paint for drinking water transport and distribution equipment and preparing method of solvent-free epoxy anticorrosive paint | |
| CN105377939A (en) | Epoxide resin composition for fiber-matrix semifinished products | |
| EP3180382B1 (en) | Amine for low-emission epoxy resin compositions | |
| Atta et al. | Multi-functional cardanol triazine schiff base polyimine additives for self-healing and super-hydrophobic epoxy of steel coating | |
| CN102532449A (en) | Preparation method of mixed cresol modified meta-xylylene diamine epoxy resin curing agent | |
| CN105131878A (en) | Low-temperature environment bridge reinforcing structural adhesive and preparation method thereof | |
| WO2012081192A1 (en) | Masterbatch-type latent curing agent for epoxy resin, and epoxy resin composition using the same | |
| CN106117479A (en) | Utilize the manufacture method of bisphenol-A by-product synthetic epoxy resin firming agent | |
| US5591812A (en) | Reactive accelerators for amine cured epoxy resins | |
| CN108148163A (en) | A kind of preparation method of modified by cardanol amine epoxy curing agent | |
| Shukla et al. | Self‐curable epoxide resins based on cardanol for use in surface coatings | |
| EP2997067B1 (en) | Hardeners for cold-curing epoxy systems | |
| CN102558502A (en) | Epoxy resin with adjustable thermal degradation temperature and preparation method thereof | |
| JP4906049B2 (en) | Epoxy resin powder coating composition | |
| CN110437711A (en) | A kind of low temperature curing type B68 extinction powder epoxy resin and the preparation method and application thereof | |
| CN112480778B (en) | Epoxy powder coating for inner wall of drinking water pipeline and preparation method thereof | |
| JP2016507612A (en) | Low emission epoxy curing agent | |
| JP5496716B2 (en) | Epoxy resin composition for powder coating and cured product thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161116 |