CN108164938A - A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof - Google Patents
A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof Download PDFInfo
- Publication number
- CN108164938A CN108164938A CN201711457495.0A CN201711457495A CN108164938A CN 108164938 A CN108164938 A CN 108164938A CN 201711457495 A CN201711457495 A CN 201711457495A CN 108164938 A CN108164938 A CN 108164938A
- Authority
- CN
- China
- Prior art keywords
- composite material
- black
- fiber glass
- glass reinforced
- tenacity fiber
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
- C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof, high shiny black high tenacity fiber glass reinforced PBT composite material, raw material components include：5 10 parts of 50 68 parts of PBT, PET, toughener：5 10 parts, 0.1 0.2 parts of antioxidant, anti- floating fine 0.3 0.5 parts of agent, 0.3 0.5 parts of flow ability modifying agent, 12 parts of black masterbatch, bright 12 parts of black masterbatch, 20 30 parts of glass fibre, glass fibre is that the alkali-free length that filament diameter is 12 μm is fine, prevents that floating fine agent is that the reactive monomer containing polar group reacts to form BAB type copolymers with ethylene bis-fatty acid amides EBS, aforementioned number is mass fraction.A kind of high shiny black high tenacity fiber glass reinforced PBT composite material of the present invention, there is good mechanical performance, thermal stability and chemical resistance, and on the basis of ensureing that material has very HI high impact, product is without floating fibre and with very high black luminance.
Description
Technical field
The present invention relates to a kind of high shiny black high tenacity fiber glass reinforced PBT composite materials and preparation method thereof, and it is compound to belong to PBT
Material Field.
Background technology
PBT is polybutylene terephthalate (PBT), belongs to crystalline thermoplastic polyester.The PBT material of fiberglass reinforced, has
Excellent mechanical performance, fatigue durability and dimensional stability, these performances also seldom change under the high temperature conditions.Excellent machine
Tool performance causes the PBT material of fiberglass reinforced to be widely used in automobile and electronic enterprises.But the PBT materials after fiberglass reinforced
Material can generate floating fine phenomenon, and toughener is added on the basis of fiberglass reinforced, and floating fibre phenomenon can become apparent from.
When product colour is designed as black, product surface can be caused to shade after adding glass and toughener, while floating fibre
Phenomenon becomes apparent from than true qualities.Anti- glass leakage agent is individually added, can slightly improve floating fine phenomenon, but such material is difficult to apply to
The sheathing material very high to surface requirements.Therefore, it is badly in need of researching and developing a kind of PBT composite of high shiny black high tenacity fiberglass reinforced.
Invention content
The defects of fine serious, color and luster is dim is floated in order to solve fiber glass reinforced PBT in the prior art, the present invention provides a kind of high
Shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows：
A kind of high shiny black high tenacity fiberglass reinforcing PBT alloy material, raw material components include：
Glass fibre is that the alkali-free length that filament diameter is 12 μm is fine, prevents that floating fine agent is the reactive monomer containing polar group
It reacts to form BAB type copolymers with ethylene bis-fatty acid amides EBS, aforementioned number is mass fraction.
The application prevents that floating fine agent is under the effect of the catalyst, to contain pole for base-material with ethylene bis-fatty acid amides (EBS)
Property group reactive monomer react to form BAB type copolymers with EBS, applicant it has been investigated that, such anti-floating fine agent is with increasing
Tough dose is mutually promoted with flow ability modifying agent, promotes the homodisperse of material, improves the efficiency that glass be combined with each other with base material, simultaneously
Stronger traction is formed to glass, it is therefore prevented that floating fibre phenomenon improves the glossiness of material surface, while composite material is added
Work performance also has clear improvement, and further promotes the promotion of composite materials property.
In order to further improve the mechanical performance of product, PBT resin is the China LanXing that viscosity is 0.8 deciliter/gram
PBT1084。
In order to further take into account the mechanical performance of product and high black luminance, it is preferable that the inherent viscosity of PET is 0.83-
0.92 deciliter/gram.
In order to further improve the impact strength of material, while floating fibre is prevented, toughener is ethylene-methyl acrylate-first
Base glycidyl acrylate random terpolymer.Applicant it has been investigated that, such toughener by with other raw materials
Collaboration promotes, completely without floating fine phenomenon.Further preferably, toughener is Du Pont PTW, and the toughener of GMA grafting has very with PBT
It on the basis of good compatibility, while can also be combined well with glass, it is entirely avoided floating fibre.
In order to further promote the synergistic effect between each component, and then further improve the light shine of alloy material
Can, while take into account the mechanical property of alloy material, it is preferable that antioxidant is that mass ratio is (3 ± 0.2)：The antioxidant of (2 ± 0.2)
1010 and the mixture of irgasfos 168.
Flow ability modifying agent in order to further improve the mobility of product, while is not influenced to improve Resin Flow auxiliary agent
The mechanical performance of product avoids floating fibre, flow ability modifying agent preferred seven promise RC-610 of Ningbo or seven promise RL-303 of Ningbo.
In order to further improve the combination of product and glass, while the gloss of product is highlighted, prevent that floating fine agent is preferably Suzhou
State light TAF.
In order to further ensure the brightness of product, while enhance and to be cooperateed with other components, it is preferable that black masterbatch be with
PBT is carrier, and carbon black mass content is 40% color masterbatch.
In order to further ensure the blackness of product, the preferred Cabot black masterbatch of black masterbatch, content of carbon black 40%.
In order to further improve the brightness of product, bright black masterbatch is organic black masterbatch using PBT as carrier.
In order to further improve the brightness of product, organic black masterbatch is preferably Suzhou state light TA-2011.
The preparation method of the above-mentioned shiny black high tenacity fiber glass reinforced PBT composite material of height, includes the following steps：
The first step：The raw material in addition to bright black masterbatch is uniformly mixed in high-speed mixer, passes through twin-screw extrusion
Machine extruding pelletization；
Second step：The particle that the first step is obtained and bright black masterbatch mixing, granulation, drying, obtained pellet is again through note
Molding machine is molded into product to get high shiny black high tenacity fiber glass reinforced PBT composite material.
The unmentioned technology of the present invention is with reference to the prior art.
Shiny black high tenacity fiber glass reinforced PBT composite material of the invention high has good mechanical performance, thermal stability, fire-retardant
Property and chemical resistance, on the basis of ensureing that material has very high impact property, product is without floating fine phenomenon and with very high
Glossiness.
Specific embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
PBT resin (blue star 1084) 68kg, PET (Xinjiang collects river TH105) resin 5kg, toughener (Du Pont PTW) 5KG is taken,
Antioxidant 1010 (refined treasured) 120g, irgasfos 168 (refined treasured) 80g, flow ability modifying agent (seven promise RL-303 of Ningbo) 300g prevent floating fibre
Agent (Suzhou state light TAF) 300g, black masterbatch (Cabot black masterbatch, content of carbon black 40%) 2KG, glass fibre 20KG are added in high
It is dispersed with stirring in fast mixing machine uniformly, discharging is added into melt blending extruding pelletization in double screw extruder, then adds
1KG lights black masterbatch (Suzhou state light TA-2011) mixing, it is dry, pellet is obtained, batten is molded through injection molding machine, detects mechanical property
It can and observe surface gloss and whether have floating fibre, the results are shown in Table 1.
Embodiment 2：
PBT resin (blue star 1084) 63kg, PET (Xinjiang collects river TH105) resin 5kg, toughener (Du Pont PTW) 5KG is taken,
Antioxidant 1010 (refined treasured) 120g, irgasfos 168 (refined treasured) 80g, flow ability modifying agent (seven promise RL-303 of Ningbo) 300g prevent floating fibre
Agent (Suzhou state light TAF) 300g, black masterbatch (Cabot black masterbatch, content of carbon black 40%) 2KG, glass fibre 25KG are added in high
It is dispersed with stirring in fast mixing machine uniformly, discharging is added into melt blending extruding pelletization in double screw extruder, then adds
1KG lights black masterbatch (Suzhou state light TA-2011) mixing, it is dry, pellet is obtained, batten is molded through injection molding machine, detects mechanical property
It can and observe surface gloss and whether have floating fibre, the results are shown in Table 1.
Embodiment 3：
PBT resin (blue star 1084) 58kg, PET (Xinjiang collects river TH105) resin 5kg, toughener (Du Pont PTW) 5KG is taken,
Antioxidant 1010 (refined treasured) 120g, irgasfos 168 (refined treasured) 80g, flow ability modifying agent (seven promise RL-303 of Ningbo)) 500g, prevents floating
Fine agent (Suzhou state light TAF) 500g, black masterbatch (Cabot black masterbatch, content of carbon black 40%) 2KG, glass fibre 30KG are added in
It is dispersed with stirring in high-speed mixer uniformly, discharging is added into melt blending extruding pelletization in double screw extruder, then adds
2KG lights black masterbatch (Suzhou state light TA-2011) mixing, it is dry, pellet is obtained, batten is molded through injection molding machine, detects mechanical property
It can and observe surface gloss and whether have floating fibre, the results are shown in Table 1.
Comparative example 1：
PBT resin (blue star 1084) 59kg, PET (Xinjiang collects river TH105) resin 5kg, toughener (Du Pont PTW) 5KG is taken,
Antioxidant 1010 (refined treasured) 120g, irgasfos 168 (refined treasured) 80g prevent floating fibre agent (Suzhou state light TAF) 500g, and (card is rich for black masterbatch
Goth black color masterbatch, content of carbon black 40%) 2KG, glass fibre 30KG, it adds in high-speed mixer and is dispersed with stirring uniformly, discharging, by it
Melt blending extruding pelletization in double screw extruder is added in, it is dry, pellet is obtained, batten is molded through injection molding machine, detects mechanical property
It can and observe surface gloss and whether have floating fibre, the results are shown in Table 1.
Mechanics Performance Testing visually observes the whether floating fine and surface black luminance of recording surface according to ASTM standard.
1 embodiment material property of table
Claims (10)
1. a kind of high shiny black high tenacity fiberglass reinforcing PBT alloy material, it is characterised in that：Its raw material components includes：
Glass fibre is that the alkali-free length that filament diameter is 12 μm is fine, prevents that floating fine agent is reactive monomer and second containing polar group
Support bis-fatty acid amides EBS reacts to form BAB type copolymers, and aforementioned number is mass fraction.
2. high shiny black high tenacity fiber glass reinforced PBT composite material as described in claim 1, it is characterised in that：PBT resin is viscous
Spend the China LanXing PBT 1084 for 0.8 deciliter/gram.
3. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：The spy of PET
Property viscosity be 0.83-0.92 deciliter/grams.
4. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Toughener is
Ethylene-methyl acrylate-glyceryl methacrylate random terpolymer.
5. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Antioxidant is
Mass ratio is (3 ± 0.2)：The antioxidant 1010 of (2 ± 0.2) and the mixture of irgasfos 168.
6. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Flow modifier
Agent is seven promise RL-303 of Ningbo.
7. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Black masterbatch is
Using PBT as carrier, carbon black mass content is 40% color masterbatch.
8. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Bright black
Mother is organic black masterbatch using PBT as carrier.
9. high shiny black high tenacity fiber glass reinforced PBT composite material as claimed in claim 1 or 2, it is characterised in that：Anti- floating fine agent
For Suzhou state light TAF.
10. the preparation method of the shiny black high tenacity fiber glass reinforced PBT composite material of height described in any one of claim 1-9,
It is characterized in that：Include the following steps：
The first step：The raw material in addition to bright black masterbatch is uniformly mixed in high-speed mixer, is squeezed by double screw extruder
Go out to be granulated；
Second step：The particle that the first step is obtained and bright black masterbatch mixing, granulation, drying, obtained pellet is again through injection molding machine
Product is molded into get high shiny black high tenacity fiber glass reinforced PBT composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457495.0A CN108164938A (en) | 2017-12-28 | 2017-12-28 | A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457495.0A CN108164938A (en) | 2017-12-28 | 2017-12-28 | A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108164938A true CN108164938A (en) | 2018-06-15 |
Family
ID=62519308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711457495.0A Withdrawn CN108164938A (en) | 2017-12-28 | 2017-12-28 | A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108164938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845760A (en) * | 2021-09-30 | 2021-12-28 | 金发科技股份有限公司 | Low-floating-fiber reinforced PBT/PET alloy composition and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665792A (en) * | 2013-12-09 | 2014-03-26 | 青岛大都新材料科技有限公司 | Low-floating-fiber flame-retardant reinforced PBT material and preparation method thereof |
| CN103709680A (en) * | 2013-12-09 | 2014-04-09 | 青岛大都新材料科技有限公司 | Low floating fiber flame retardant enhanced PBT material |
| CN104817833A (en) * | 2015-05-25 | 2015-08-05 | 广东威林工程塑料有限公司 | PET composite material with mosquito repelling effect |
-
2017
- 2017-12-28 CN CN201711457495.0A patent/CN108164938A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665792A (en) * | 2013-12-09 | 2014-03-26 | 青岛大都新材料科技有限公司 | Low-floating-fiber flame-retardant reinforced PBT material and preparation method thereof |
| CN103709680A (en) * | 2013-12-09 | 2014-04-09 | 青岛大都新材料科技有限公司 | Low floating fiber flame retardant enhanced PBT material |
| CN104817833A (en) * | 2015-05-25 | 2015-08-05 | 广东威林工程塑料有限公司 | PET composite material with mosquito repelling effect |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845760A (en) * | 2021-09-30 | 2021-12-28 | 金发科技股份有限公司 | Low-floating-fiber reinforced PBT/PET alloy composition and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102040808B (en) | Glass fiber enhanced PET/PBT (Polyethylene Terephthalate)/(Polybutylene Terephthalate) alloy with high glossiness and low warping degree and preparation method thereof | |
| CN101117433B (en) | Elastomer-containing polycarbonate-based blending material and method for making same | |
| CN102070884B (en) | Fire resistant glass fiber reinforced polyethylene terephthalate/polybutylece terephthalate alloy and preparation method thereof | |
| CN102329479A (en) | Glass fiber reinforced PBT (Poly Butylenes Terephthalate)/PP (Polypropylene) alloy material and preparation method thereof | |
| CN102337015A (en) | Conductive PC/ABS composite material and its preparation method | |
| CN102229738B (en) | High glow-wire flame retardant reinforced PET/PA (polyethylene terephthalate/polyamide) alloy material and production method thereof | |
| CN104927335A (en) | High-tenacity high-heat-resistant PC/PBT resin combination and preparing method thereof | |
| CN106633686A (en) | Core-shell particle toughened PBT/PC alloy and preparation method | |
| CN101974197A (en) | Metal-imitated high-gloss ABS (Acrylonitrile Butadiene Styrene) alloy and preparation method thereof | |
| CN105385117B (en) | A kind of high-low temperature resistant impact for LED plastic-aluminum structural members strengthens anti-flaming PBT composite and preparation method thereof | |
| CN103059534A (en) | Polycarbonate blending material with high toughness and preparation method thereof | |
| CN108164938A (en) | A kind of high shiny black high tenacity fiber glass reinforced PBT composite material and preparation method thereof | |
| CN104419150A (en) | Toughening and strengthening flame retardant antistatic modified PBT material with core-shell structure | |
| CN103554868A (en) | High-performance biodegradable plastic metal and preparation method thereof | |
| CN107312300A (en) | Transparent resin composition that mobility improves and preparation method thereof | |
| CN1148133A (en) | Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method | |
| CN103289388A (en) | In-situ compatibilized glass fiber reinforced nylon 66 composite material and preparation method thereof | |
| CN112795150B (en) | high-CTI (comparative tracking index) modified PBT (polybutylene terephthalate) material suitable for various colors and preparation method thereof | |
| CN105440621A (en) | PLA noctilucence master batch and preparation method thereof | |
| CN105670125A (en) | High-smoothness long-glass-fiber flame-retardant toughened polypropylene blend material and preparation method thereof | |
| CN105017764A (en) | Composite material of halogen-free flame-retardant reinforced PA66/recycled PET bottle-grade chips and preparation method thereof | |
| CN105462225A (en) | Anti-static PC-PBT alloy material and preparation method thereof and safe toe cap | |
| CN110760177B (en) | Conductive polyphenyl ether/high impact polystyrene composition and preparation method thereof | |
| CN101058662A (en) | ABS resin composition with excellent antistatic capability and preparation method | |
| CN115850967B (en) | High-whiteness, high-heat-resistance and high-fluidity nylon composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180615 |
|
| WW01 | Invention patent application withdrawn after publication |