CN112646422A - Preparation process of thermosensitive color-changing lead core - Google Patents
Preparation process of thermosensitive color-changing lead core Download PDFInfo
- Publication number
- CN112646422A CN112646422A CN202011534773.XA CN202011534773A CN112646422A CN 112646422 A CN112646422 A CN 112646422A CN 202011534773 A CN202011534773 A CN 202011534773A CN 112646422 A CN112646422 A CN 112646422A
- Authority
- CN
- China
- Prior art keywords
- parts
- lead core
- color
- changing
- temperature
- 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
Images
Classifications
-
- 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
- C09D13/00—Pencil-leads; Crayon compositions; Chalk compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
The invention discloses a preparation process of a thermosensitive color-changing lead core, which is mainly prepared from the following raw materials: the material has the characteristics of simple structure and novel design, the thermosensitive pencil lead has color display at normal temperature, when the pencil lead is heated to a certain temperature, the color completely disappears, then the pencil lead is still colorless when being recovered to the normal temperature from high temperature, and when the temperature is continuously reduced to the critical temperature (color development temperature), the color of the pencil lead is recovered to the original colored state, and meanwhile, the pencil lead has the characteristics of smooth writing, easy coloring and difficult fracture.
Description
Technical Field
The invention relates to the technical field of thermosensitive color-changing lead cores, in particular to a preparation process of a thermosensitive color-changing lead core.
Background
Thermochromic materials are functional materials whose color changes significantly with temperature changes over a range of temperatures. As early as over a hundred years, people have discovered a phenomenon of thermochromic color. The comprehensive research and application of the thermochromic material has already been developed for six to seventy years so far, and has been developed for over thirty years in China. After decades of research and development, various materials with thermochromic characteristics, such as inorganic, organic, liquid crystal, polymer, biological macromolecules and the like, and low-temperature thermochromic pigments suitable for ink have been developed.
Thermochromic materials, which are basically irreversible thermochromic materials at the beginning of development, are mainly used for coatings for indicating temperature, such as coatings for overtemperature alarm in oil refining devices, color formers on thermosensitive paper for indicating the surface temperature distribution of materials in the aviation industry and widely applied instruments, and the like. Most of the thermochromic materials are inorganic metal thermochromic materials, the discoloration temperature is high, and the upper temperature measurement limit can exceed 1200 ℃. Since the last 80 years of the century, the development of foreign thermochromic materials tends to both low temperature and reversibility, and a series of new varieties of low-temperature reversible thermochromic materials appear, particularly in recent years, along with the application of microencapsulation technology, the thermochromic materials appear many new varieties, and the application range is also expanded from the initial temperature indicating effect to various aspects of daily life such as textiles, printing, coatings, toys, anti-counterfeiting, kitchen supplies, entertainment and the like.
The color-changing pencil, the ball-point pen oil, the color-changing nail polish, the toys and other products are published in the cultural and educational industry, and the life of people is greatly enriched. Reversible organic thermochromic materials will be increasingly used in products of daily life, which certainly will be the main direction for their application. The application range of the reversible thermochromic material is expanded, the demand of the reversible thermochromic material is undoubtedly increased day by day, and potential economic benefits and social benefits are gradually shown.
Most of the traditional common lead cores do not have the color changing performance, and simultaneously have the defects of easy breaking and difficult coloring in writing, so that the preparation process of the thermosensitive color changing lead core is provided by improving the traditional common lead core.
Disclosure of Invention
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a preparation process of a thermosensitive color-changing lead core, which comprises the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
As a preferred technical scheme of the invention, the raw materials comprise the following main components in percentage by mass: 10-24 parts of thermochromic color paste, 70-90 parts of clay, 18-24 parts of filler, 10-19 parts of adhesive, 8-25 parts of deionized water, 8-10 parts of paraffin, 5-20 parts of stearic acid, 5-24 parts of palm wax, 14-22 parts of emulsifier and 10-22 parts of p-methyl diacetate.
As a preferable technical scheme of the invention, the clay is subjected to surface treatment by adopting a surface treatment agent, and the fineness is 3000-6000 meshes.
In a preferred embodiment of the present invention, the surface treatment agent is one or more of stearic acid, silane, and resin mixed together
As a preferred technical scheme of the invention, the thermochromic color paste is a polymer microcapsule system color paste.
In a preferred embodiment of the present invention, the adhesive is one or more selected from carboxymethyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl methyl cellulose.
As a preferred technical scheme of the invention, the four-roller grinding machine in the step is used for grinding seven to eight times, and the temperature is controlled to be 45-60 ℃.
As a preferred technical scheme of the invention, the temperature for drying the lead core in the step five is 80-100 ℃, and the core drying time is 6-12 hours.
The invention has the beneficial effects that: compared with common lead cores and colored lead cores, the thermosensitive lead core has the color display at normal temperature, when the lead core is heated to a certain temperature, the color disappears completely, then the lead core is colorless when being recovered to the normal temperature from high temperature, when the temperature is continuously reduced to the critical temperature (color development temperature), the color is recovered to the original colored state, meanwhile, the lead core made of the thermosensitive color-changing paste has the characteristics of smooth writing, easy coloring and difficult breaking, the handwriting color can be easily erased by friction or other heating modes, and the reversible performance of color reversion is realized below zero, errors in the writing process can be easily corrected and modified, no trace is left, no fragments are generated, the color is various, the lead core is nontoxic, and the life of people is greatly enriched.
Drawings
FIG. 1 is a schematic view of the steps of a process for preparing a thermochromic lead core according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in FIG. 1, the preparation process of the thermosensitive color-changing lead core comprises the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
The raw materials comprise the following main components in percentage by mass: 10-24 parts of thermochromic color paste, 70-90 parts of clay, 18-24 parts of filler, 10-19 parts of adhesive, 8-25 parts of deionized water, 8-10 parts of paraffin, 5-20 parts of stearic acid, 5-24 parts of palm wax, 14-22 parts of emulsifier and 10-22 parts of p-methyl diacetate.
Wherein the clay is subjected to surface treatment by adopting a surface treatment agent, and the fineness is 3000-6000 meshes.
Wherein the surface treating agent is one or a mixture of stearic acid, silane or resin
Wherein the thermosensitive color-changing paste is a polymer microcapsule system paste.
Wherein the adhesive is selected from one or more of carboxymethyl cellulose, hydroxypropyl methyl cellulose and hydroxyethyl methyl cellulose.
Wherein, the grinding is carried out for seven to eight times by a three-roller machine in the fourth step, and the temperature is controlled to be 45-60 ℃.
Wherein, the temperature for drying the lead core in the fifth step is 80-100 ℃, and the core drying time is 6-12 hours.
Example 1
The process comprises the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
The thermosensitive color-changing lead core comprises the following components in parts by weight: 8-22 parts of thermosensitive color-changing paste, 68-88 parts of adhesive, 16-22 parts of filler, 8-17 parts of adhesive, 6-23 parts of deionized water, 6-8 parts of paraffin, 3-18 parts of stearic acid, 3-22 parts of palm wax, 12-20 parts of emulsifier and 8-20 parts of p-methyl diacetate.
Example 2
The process comprises the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
The thermosensitive color-changing lead core comprises the following components in parts by weight: 12-26 parts of thermosensitive color-changing paste, 72-92 parts of clay, 20-26 parts of filler, 12-21 parts of adhesive, 10-27 parts of deionized water, 10-12 parts of paraffin, 7-22 parts of stearic acid, 7-26 parts of palm wax, 16-24 parts of emulsifier and 12-24 parts of p-methyl diacetate.
Example 3
The process comprises the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
The thermosensitive color-changing lead core comprises the following components in parts by weight: 10-24 parts of thermochromic color paste, 74-94 parts of clay, 22-28 parts of filler, 14-23 parts of adhesive, 12-29 parts of deionized water, 12-14 parts of paraffin, 9-24 parts of stearic acid, 9-28 parts of palm wax, 18-26 parts of emulsifier and 14-26 parts of p-methyl diacetate.
The working principle is as follows: firstly, checking whether the device is normal or not, and when the checking is finished, the first step: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate; step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes; step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃; step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%; step five: after the lead core is dried to the required moisture, the lead core is placed into a freezer below-20 ℃ for storage for 24 hours to enable the lead core to develop color, the lead core is taken out and placed to room temperature to obtain the thermosensitive reversible color lead core, and according to the following steps, the obtained lead core has the characteristics of smooth writing, easy coloring and difficult breakage, the handwriting color can be easily erased through friction or other heating modes, and the reversible performance of under-zero color reversion is realized, so that the errors in the writing process can be easily corrected and modified, and no traces or fragments are left. The color is various, the refill is nontoxic, meets the safety requirement of EN71-3, and is popular with consumers.
Finally, it should be noted that: in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A preparation process of a thermosensitive color-changing lead core is characterized by comprising the following steps:
the method comprises the following steps: preparing a certain amount of thermosensitive color-changing paste, clay, filler, adhesive, deionized water, paraffin, stearic acid, palm wax, emulsifier and p-methyl diacetate;
step two: weighing a certain amount of thermosensitive color-changing paste and a certain amount of filler, adding the thermosensitive color-changing paste and the filler into a kneader, stirring and kneading uniformly, then adding the dissolved adhesive and deionized water, and continuing kneading for 30 minutes;
step three: weighing a certain amount of paraffin, a certain amount of palm wax main material and an emulsifier, heating the paraffin, the palm wax main material and the emulsifier to 85 ℃, adding the mixture into a kneader after complete melting, and kneading the mixture for 30 minutes at 45-50 ℃;
step four: cooling and discharging to make the water content of the mixed material be about 14%, grinding the material for 2-3 times by using a three-roller machine to make the water content be 10-12%;
step five: drying the lead core to the required moisture, putting the lead core into a freezer with the temperature below-20 ℃ for 24 hours to develop color, taking out the lead core and putting the lead core to room temperature to obtain the thermosensitive reversible colorful lead core.
2. The preparation process of the thermochromic lead core according to claim 1, wherein the raw materials comprise, by mass: 10-24 parts of thermochromic color paste, 70-90 parts of clay, 18-24 parts of filler, 10-19 parts of adhesive, 8-25 parts of deionized water, 8-10 parts of paraffin, 5-20 parts of stearic acid, 5-24 parts of palm wax, 14-22 parts of emulsifier and 10-22 parts of p-methyl diacetate.
3. The process for preparing a thermochromic lead core according to claim 1, wherein the clay is surface-treated with a surface treatment agent and has a fineness of 3000-6000 mesh.
4. The process of claim 3, wherein the surface treatment agent is one or more of stearic acid, silane, and resin.
5. The process for preparing a thermosensitive color-changing lead core according to claim 1, wherein the thermosensitive color-changing paste is a polymer microcapsule system paste.
6. The process for preparing a thermochromic lead core according to claim 1, wherein the adhesive is one or more selected from the group consisting of carboxymethyl cellulose, hydroxypropyl methyl cellulose, and hydroxyethyl methyl cellulose.
7. The process for preparing a thermochromic lead core according to claim 1, wherein the four steps of grinding with a three-roll mill are carried out seven to eight times, and the temperature is controlled to be 45-60 ℃.
8. The process for preparing a thermochromic lead according to claim 1, wherein the temperature for drying the lead in the step five is 80-100 ℃ and the time for drying the lead is 6-12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534773.XA CN112646422A (en) | 2020-12-22 | 2020-12-22 | Preparation process of thermosensitive color-changing lead core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011534773.XA CN112646422A (en) | 2020-12-22 | 2020-12-22 | Preparation process of thermosensitive color-changing lead core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112646422A true CN112646422A (en) | 2021-04-13 |
Family
ID=75359361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011534773.XA Pending CN112646422A (en) | 2020-12-22 | 2020-12-22 | Preparation process of thermosensitive color-changing lead core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112646422A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029490A (en) * | 2012-11-13 | 2013-04-10 | 常州大学 | Preparing method of environment-friendly pencil |
| CN103937330A (en) * | 2014-05-16 | 2014-07-23 | 安硕文教用品（上海）股份有限公司 | High-temperature-resistant colored pencil core and preparation method thereof |
| CN109627853A (en) * | 2019-01-09 | 2019-04-16 | 真彩文具股份有限公司 | Reversible thermochromic color pencil lead and preparation method thereof and pencil |
| CN110003721A (en) * | 2019-04-03 | 2019-07-12 | 安硕文教用品（上海）股份有限公司 | It is a kind of to write smooth color pencil lead and preparation method thereof |
-
2020
- 2020-12-22 CN CN202011534773.XA patent/CN112646422A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103029490A (en) * | 2012-11-13 | 2013-04-10 | 常州大学 | Preparing method of environment-friendly pencil |
| CN103937330A (en) * | 2014-05-16 | 2014-07-23 | 安硕文教用品（上海）股份有限公司 | High-temperature-resistant colored pencil core and preparation method thereof |
| CN109627853A (en) * | 2019-01-09 | 2019-04-16 | 真彩文具股份有限公司 | Reversible thermochromic color pencil lead and preparation method thereof and pencil |
| CN110003721A (en) * | 2019-04-03 | 2019-07-12 | 安硕文教用品（上海）股份有限公司 | It is a kind of to write smooth color pencil lead and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9212288B2 (en) | Glass flake and coated glass flake | |
| CN109487360A (en) | A kind of polyester fiber containing plant extracts | |
| CN110510879A (en) | Crystallized glass article, devitrified glass and its manufacturing method | |
| CN108129914B (en) | Colored pencil lead with high flexural strength and preparation method thereof | |
| BR112017022595B1 (en) | HIGH TEMPERATURE INK JET PAINT AND BRIGHT RED FOR CERAMIC DECORATION, PREPARATION METHOD AND CERAMIC BLOCK | |
| CN101133002B (en) | Zirconia- and cerium-oxide-based sintered bead | |
| CN110267924A (en) | Sintered glass ceramics | |
| CN110482866A (en) | Crystallized glass article, devitrified glass and its manufacturing method | |
| CN106145687B (en) | A kind of high strength glass fiber | |
| DE2949619A1 (en) | GLASS, ESPECIALLY GLASS-CERAMIC DENTAL RESTORATION AGENTS, AND METHOD FOR THE PRODUCTION THEREOF | |
| CN106488887A (en) | Color-printed glass plate, color-printed glass plate, its manufacture method and image display device | |
| CN103374323A (en) | Preparation method of yellowing resistant liquid optical adhesive | |
| EP3098206B1 (en) | Crystal glass | |
| CN108821566A (en) | Alumina silicate glass, preparation method and application | |
| CN104059574A (en) | Preparation method of polyvinyl formal adhesive | |
| CN106589429B (en) | Multifunctional photonic crystal paper and preparation method thereof | |
| CN106480545B (en) | A kind of preparation method colouring alginate fiber | |
| CN109667191B (en) | Epoxy cyclohexane modified chitosan reinforcement liquid for paper protection and application method thereof | |
| CN109987835A (en) | Optical glass, gas preform, optical element and optical instrument | |
| EP2287123A1 (en) | Scale-like glass and coated scale-like glass | |
| CN112646422A (en) | Preparation process of thermosensitive color-changing lead core | |
| CN103319827A (en) | Method for preparing organic-inorganic nano composite film | |
| Wang et al. | Effects of adding methods of fluorane microcapsules and shellac resin microcapsules on the preparation and properties of bifunctional waterborne coatings for basswood | |
| JP2013121905A (en) | Resin composite substrate glass | |
| DE112018003694T5 (en) | Hardened glass |
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: 20210413 |