CN106243496A - A kind of plum tube toughening type masterbatch and preparation method - Google Patents

A kind of plum tube toughening type masterbatch and preparation method Download PDF

Info

Publication number
CN106243496A
CN106243496A CN201610629535.4A CN201610629535A CN106243496A CN 106243496 A CN106243496 A CN 106243496A CN 201610629535 A CN201610629535 A CN 201610629535A CN 106243496 A CN106243496 A CN 106243496A
Authority
CN
China
Prior art keywords
plum tube
toughening type
antioxidant
type masterbatch
polyethylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610629535.4A
Other languages
Chinese (zh)
Inventor
季琨
舒玉法
舒琳
季汝来
马刚
刘学辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANQING CITY YUEFA PIPE INDUSTRY Co Ltd
Original Assignee
ANQING CITY YUEFA PIPE INDUSTRY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ANQING CITY YUEFA PIPE INDUSTRY Co Ltd filed Critical ANQING CITY YUEFA PIPE INDUSTRY Co Ltd
Priority to CN201610629535.4A priority Critical patent/CN106243496A/en
Publication of CN106243496A publication Critical patent/CN106243496A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10Homopolymers or copolymers of propene
    • C08L23/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/20Compounding polymers with additives, e.g. colouring
    • C08J3/22Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815Copolymers of ethene with aliphatic 1-olefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04Homopolymers or copolymers of ethene
    • C08J2323/08Copolymers of ethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10Homopolymers or copolymers of propene
    • C08J2323/12Polypropene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04Homopolymers or copolymers of ethene
    • C08J2423/06Polyethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/16Ethene-propene or ethene-propene-diene copolymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2453/00Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The present invention open a kind of plum tube toughening type masterbatch and preparation method, belong to pipe material technical field.Plum tube toughening type masterbatch of the present invention includes the raw material of following mass percent: polypropylene 3 6%, polyethylene 3 6%, calcium carbonate 82 88%, Tissuemat E 3 6%, toughener 2 5%, antioxidant 0.1 0.3%, other auxiliary agents 0.3 0.5%.Toughening type masterbatch of the present invention joins and can reduce production cost in plum tube, improves the ring stiffness of plum tube, bending modulus, improves the intensity of plum tube, toughness and impact strength;The present invention adds linear low density polyethylene (LLDPE), improves fault growth rate and the tensile fracture of plum tube.

Description

A kind of plum tube toughening type masterbatch and preparation method
Technical field
The invention belongs to pipe material technical field, relate to a kind of plum tube, specifically a kind of plum tube is female with toughening type Material and preparation method.
Background technology
Plum tube is that the plum tube formed through unique mould for main material plus other formula with PVC particle is real Thing shows the communication tubing of a kind of plum blossom-shaped, and also known as plum tube and honeycomb duct, this kind of pipe material inner wall is smooth, directly can wear optical cable, Can save man-hour, it is rational in infrastructure, and use value is high, and the life-span is long.It is mainly used in advantage, movement, Tie Tong, UNICOM, Netcom, wide The communication cable protecting pipes such as electricity.
Plum tube uses porous integrative-structure, good rigidity, uniform force.Product inwall coefficient of friction is little, wears cable brisk, executes Work is simple and easy to do.There is position, multiple hole, pore can be reserved, improve communicating hole position utilization rate.Product Applicable temperature scope relatively big (+ 80-40), all can use in the torrid zone and cold district.Joint uses socket join structure.Do not need any instrument can complete between pipe Connect, it is simple to construct and safeguard.Plum tube is more than more than 30 years service life under Conditions of Buried Depth.
The toughening modifying of PVC material receives much concern always, utilizes elastic body toughening PVC, can cause the loss of rigidity simultaneously, Inorganic filler can improve the rigidity of polymer, but because inorganic matter is poor with organic interface cohesion, makes toughness of material decline.
Summary of the invention
It is an object of the invention to provide a kind of plum tube toughening type masterbatch and preparation method.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of plum tube toughening type masterbatch, including the raw material of following mass percent: polypropylene 3-6%, polyethylene 3- 6%, calcium carbonate 82-88%, Tissuemat E 3-6%, toughener 2-5%, antioxidant 0.1-0.3%, other auxiliary agents 0.3- 0.5%.
As preferred further, polyethylene of the present invention be melt index be that the linear, low density of 2-6g/10min gathers Ethylene.
As preferred further, antioxidant of the present invention is selected from Hinered phenols, hindered amines, phosphite ester or thioether One or more in kind antioxidant, including in antioxidant 1010, antioxidant 1098, irgasfos 168 or antioxidant DSTDP Plant or several.
As preferred further, toughener of the present invention selected from ethylene propylene diene rubber, polystyrene block copolymer, One or more in polyolefin elastomer.
As preferred further, other auxiliary agents of the present invention one in coupling agent, the steady agent of light.
Invention additionally discloses a kind of method preparing plum tube toughening type masterbatch, it is characterised in that comprise the following steps:
(1) by proportioning, polypropylene, polyethylene, calcium carbonate, Tissuemat E, toughener, antioxidant, other auxiliary agents are added In high-speed mixer, carry out mixed at high speed 5-10min, obtain mixture;
(2) said mixture is put in double screw extruder, carry out extrusion pelletize, obtain plum tube toughening type female Material.
Beneficial effects of the present invention: toughening type masterbatch of the present invention joins and can reduce production cost in plum tube, improves prunus mume (sieb.) sieb.et zucc. The ring stiffness of floral tube, bending modulus, improves the intensity of plum tube, toughness and impact strength;The present invention adds linear, low density Polyethylene, improves elongation at break and the tensile fracture of plum tube.
Detailed description of the invention
Below in conjunction with embodiment, technical solution of the present invention is clearly and completely described, it is clear that described enforcement Example is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, this area is common All other embodiments that technical staff is obtained under not making creative work premise, broadly fall into present invention protection Scope.
A kind of method preparing plum tube toughening type masterbatch, comprises the following steps: by proportioning, by polypropylene, polyethylene, Calcium carbonate, Tissuemat E, toughener, antioxidant, other auxiliary agents join and carry out mixed at high speed 5-10min in high-speed mixer, Obtain mixture;Mixture is put in double screw extruder, carry out extrusion pelletize, obtain plum tube toughening type masterbatch;With In lower embodiment, polypropylene is PP (B8101), and polyethylene is LLDPE (7042);
Embodiment 1
Proportioning weighs polypropylene 5%, polyethylene 5%, calcium carbonate 82%, Tissuemat E (PE wax) respectively by mass percentage 3%, ethylene propylene diene rubber 4.6%, antioxidant 1010 0.1%, coupling agent 0.3%, joins and carries out in high-speed mixer at a high speed Mixing 5-10min, obtains mixture;Mixture is put in double screw extruder, carry out extrusion pelletize, obtain plum tube and increase Tough type masterbatch.
After measured, embodiment 1 plum tube toughening type masterbatch is as follows for the performance preparing plum tube: impact strength 47kJ/m2, hot strength 38MPa, elongation at break 520%, bending strength 42MPa, bending modulus 1789MPa.
Embodiment 2
Proportioning weighs polypropylene 3%, polyethylene 3%, calcium carbonate 85%, Tissuemat E 5% respectively, gathers by mass percentage Styrene block copolymer 3.2%, irgasfos 168 0.3%, silane coupler 0.5%, join and carry out height in high-speed mixer Speed mixing 5-10min, obtains mixture;Mixture is put in double screw extruder, carry out extrusion pelletize, obtain plum tube and use Toughening type masterbatch.
Measuring, the performance that embodiment 2 plum tube toughening type masterbatch is used for preparing plum tube is as follows: impact strength 43kJ/ m2, hot strength 40MPa, elongation at break 490%, bending strength 45MPa, bending modulus 1836MPa.
Embodiment 3
Proportioning weighs polypropylene 5%, polyethylene 4%, calcium carbonate 85%, Tissuemat E 3% respectively, gathers by mass percentage Olefin elastomer 2.2%, antioxidant DSTDP 0.2%, antioxidant 10980.1%, the steady agent of light 0.5%, join mixed at high speed Machine carries out mixed at high speed 5-10min, obtains mixture;Mixture is put in double screw extruder, carry out extrusion pelletize, To plum tube toughening type masterbatch.
Measuring, the performance that embodiment 3 plum tube toughening type masterbatch is used for preparing plum tube is as follows: impact strength 45kJ/ m2, hot strength 45MPa, elongation at break 550%, bending strength 40MPa, bending modulus 2011MPa.
Embodiment 4
Proportioning weighs polypropylene 6%, polyethylene 6%, calcium carbonate 82%, Tissuemat E 3% respectively, gathers by mass percentage Olefin elastomer 1.2%, polystyrene block copolymer 1%, irgasfos 168 0.2%, antioxidant 1010 0.1%, the steady agent of light 0.5%, join and high-speed mixer carries out mixed at high speed 5-10min, obtain mixture;Mixture is put into double screw extruder In, carry out extrusion pelletize, obtain plum tube toughening type masterbatch.
Measuring, the performance that embodiment 4 plum tube toughening type masterbatch is used for preparing plum tube is as follows: impact strength 50kJ/ m2, hot strength 43MPa, elongation at break 514%, bending strength 42MPa, bending modulus 1985MPa.
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply this Bright.Case study on implementation obviously easily can be made various amendment by person skilled in the art, and described herein one As principle be applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to enforcement case here Example, those skilled in the art are according to the announcement of the present invention, and the improvement made without departing from scope and amendment all should be Within protection scope of the present invention.

Claims (6)

1. a plum tube toughening type masterbatch, it is characterised in that include the raw material of following mass percent: polypropylene 3-6%, Polyethylene 3-6%, calcium carbonate 82-88%, Tissuemat E 3-6%, toughener 2-5%, antioxidant 0.1-0.3%, other auxiliary agents 0.3-0.5%.
Plum tube toughening type masterbatch the most according to claim 1, it is characterised in that described polyethylene is that melt index is The linear low density polyethylene (LLDPE) of 2-6g/10mi n.
Plum tube toughening type masterbatch the most according to claim 1, it is characterised in that described antioxidant is selected from hindered phenol One or more in class, hindered amines, phosphite ester or thioether kind antioxidant, including antioxidant 1010, antioxidant 1098, resist One or more in oxygen agent 168 or antioxidant DSTDP.
Plum tube toughening type masterbatch the most according to claim 1, it is characterised in that described toughener is selected from EPDM One or more in rubber, polystyrene block copolymer, polyolefin elastomer.
Plum tube toughening type masterbatch the most according to claim 1, it is characterised in that other auxiliary agents described are selected from coupling One in agent, the steady agent of light.
6. the method preparing plum tube toughening type masterbatch, it is characterised in that comprise the following steps:
(1) by proportioning, polypropylene, polyethylene, calcium carbonate, Tissuemat E, toughener, antioxidant, other auxiliary agents are joined height Speed mixer carries out mixed at high speed 5-10mi n, obtains mixture;
(2) said mixture is put in double screw extruder, carry out extrusion pelletize, obtain plum tube toughening type masterbatch.
CN201610629535.4A 2016-08-03 2016-08-03 A kind of plum tube toughening type masterbatch and preparation method Pending CN106243496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610629535.4A CN106243496A (en) 2016-08-03 2016-08-03 A kind of plum tube toughening type masterbatch and preparation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610629535.4A CN106243496A (en) 2016-08-03 2016-08-03 A kind of plum tube toughening type masterbatch and preparation method

Publications (1)

Publication Number Publication Date
CN106243496A true CN106243496A (en) 2016-12-21

Family

ID=57606467

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610629535.4A Pending CN106243496A (en) 2016-08-03 2016-08-03 A kind of plum tube toughening type masterbatch and preparation method

Country Status (1)

Country Link
CN (1) CN106243496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107936367A (en) * 2017-11-14 2018-04-20 舒城恒通通讯器材有限责任公司 Plum tube tubular object extruding material and its preparation process are used in one kind communication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1100087C (en) * 1998-06-18 2003-01-29 中国科学院化学研究所 Stuffing mother particle for toughening polyolefine and preparation process and usage thereof
CN102040774A (en) * 2010-12-20 2011-05-04 深圳市科聚新材料有限公司 PP (polypropylene) filled masterbatch and method for preparing same
CN102746572A (en) * 2011-04-21 2012-10-24 广东生之源数码电子有限公司 Special modified polypropylene material for TV set rear shell and its production method
CN103214734A (en) * 2013-03-26 2013-07-24 安徽双荣电器电缆有限公司 Multifunctional polypropylene masterbatch and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1100087C (en) * 1998-06-18 2003-01-29 中国科学院化学研究所 Stuffing mother particle for toughening polyolefine and preparation process and usage thereof
CN102040774A (en) * 2010-12-20 2011-05-04 深圳市科聚新材料有限公司 PP (polypropylene) filled masterbatch and method for preparing same
CN102746572A (en) * 2011-04-21 2012-10-24 广东生之源数码电子有限公司 Special modified polypropylene material for TV set rear shell and its production method
CN103214734A (en) * 2013-03-26 2013-07-24 安徽双荣电器电缆有限公司 Multifunctional polypropylene masterbatch and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107936367A (en) * 2017-11-14 2018-04-20 舒城恒通通讯器材有限责任公司 Plum tube tubular object extruding material and its preparation process are used in one kind communication

Similar Documents

Publication Publication Date Title
CN102212237B (en) Preparation method for ultrastrong earthquake resistant polyvinyl chloride pipe material
CN104961976B (en) Improved polyalkene DRPO steel modeling enhancing winding draining blow-off pipe
CN104212046B (en) Porous plum tube and preparation method thereof
CN104004271A (en) Low-temperature-resistant polypropylene special material
CN105175854A (en) Reinforced and toughened HDPE (high-density polyethylene) hollow wall winding pipe
CN103146054A (en) Modified jute fiber reinforced polypropylene and its preparation method
CN106947170A (en) MPP power pipes and preparation method thereof
CN102443208A (en) Mining flame retardant plastic geogrid master batch
CN104989890A (en) Underground double-layer reinforced and modified polyolefin (DRPO) corrugated pipe for water draining and sewage discharging
CN112011115A (en) Plastic waterproof material and preparation method and application thereof
CN103897382A (en) Flame retardant plastic
CN103708801A (en) Low-contraction high-cementation inorganic thermal-insulation mortar
CN109354752A (en) Polyvinyl piping materials
CN101824180B (en) High elasticity polyolefin hose with radiation crosslinking and preparation method thereof
CN109666212A (en) A kind of high fire-retardance MPP electric power protection pipe and preparation method thereof
CN106243496A (en) A kind of plum tube toughening type masterbatch and preparation method
CN104497393A (en) Anticorrosive modified polyethylene pipeline and preparation method thereof
CN103991246A (en) Method of preparing three-layer co-extrusion pipe fittings from polyolefin master batch
CN102788198A (en) Multifunctional PP-R pipe and preparation method thereof
CN103467840A (en) Modified polypropylene material and preparation method and uses thereof
CN112409681B (en) Polypropylene composition and preparation method thereof
CN104045897A (en) Reinforced and modified polyethylene composition and preparation method thereof
CN111269489A (en) High-flame-retardance high-heat-resistance MPP (modified Polypropylene) pipe and preparation method thereof
CN111057313A (en) Heat-resistant and pressure-resistant PPR (polypropylene random) pipe
CN109467779A (en) A kind of wear-resistant PE tubing

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into 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: 20161221