Unlock instant, AI-driven research and patent intelligence for your innovation.
Process and apparatus for manufacture of processable polyvinyl alcohol
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A polyvinyl alcohol and polymer technology, applied in the production process of polyvinyl alcohol, processed into films or other extruded products, the equipment used to realize the method, and the novel can handle the field of polyvinyl alcohol components, which can solve difficult problems. Achieving effective production of plasticized polyvinyl alcohol and other issues
Pending Publication Date: 2018-06-08
阿夸派克IP有限公司
View PDF9 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Polyols have been used as plasticizers, but efficient production of highly hydrolyzable plasticized polyvinyl alcohol has not been easily achieved
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0165]In a series of runs using water (5%) and glycerol (10%), formulation F9 included a polyvinyl alcohol blend (SELVOL EH 6210313 from Sekisui Specialty Chemicals Europe, S.L. (59.5%), EH 4109645 (25.5%)). Feed rate to extruder (Rondol orthogonal system, twin-screw 25mm; L:D 20:1; discharge only at the junction of twin-screw and single-screw extruders); total throughput rate 1.5kg / h ; Mold temperature 175°C; Generated torque 60%. The extruder was equipped with a strand pelletizer. Along the barrel of the extruder, the extrusion temperature configuration settings are: zone 0, ambient temperature; zone 1, 20°C; zone 2, 40°C; zone 3, 80°C; zone 4, 90°C; zone 5 , 150°C; Zone 6, 200°C; Zone 7, 200°C; Zone 8, 200°C; Zone 9, 200°C; Zone 10, 200°C; Zone 11, 200°C. The pellet samples produced from these runs were characterized by 1 H NMR, DSC, GPC, and other experimental methods tested, but the key test is to get the pellets to produce a good film using standard commercial blown ...
example 2
[0167] In a series of runs using water (5%) and pentaerythritol (10%), formulation K1-010 was used as a polyvinyl alcohol blend (SELVOL EH 6210313 (59.5%), EH 4109645 from Sekisui Specialty Chemicals Europe Ltd. (25.5%)). Feed rate to extruder (Zeppelin RHC 25 twin screw extruder, L:D 40:1; discharge in zones 8 and 9); total throughput rate 10 kg / h; die temperature 195°C; generated torque 52+ / -2.0%. The extruder was equipped with a strand pelletizer. Across the barrel of the extruder, the extrusion temperature profile is set as: zone 0, ambient temperature; zone 1, 20°C; zone 2, 40°C; zone 3, 80°C; zone 4, 90°C; zone 5 , 150°C; Zone 6, 200°C; Zone 7, 200°C; Zone 8, 200°C; Zone 9, 200°C; Zone 10, 200°C; Zone 11, 200°C. As in Example 1, the properties of pellet samples produced from these runs were tested and the pellets produced good films using standard commercial blown film methods.
example 3
[0169] In a series of runs using water (10%) and dipentaerythritol (10%), formulation L1-010 was used as a polyvinyl alcohol blend (SELVOL EH6210313 (56%), EH 4109645 from Sekisui Specialty Chemicals Europe Ltd. (twenty four%)). Total feed rate to extruder (Zeppelin RHC 25 twin-screw extruder, L:D 40:1; discharge in zones 8 and 9) 5.0 kg / h; die temperature 195°C; generated torque 44+ / - 4.0%. The extruder was equipped with a strand pelletizer. Along the barrel of the extruder, the extrusion temperature configuration settings are: zone 0, ambient temperature; zone 1, 20°C; zone 2, 40°C; zone 3, 80°C; zone 4, 90°C; zone 5 , 150°C; Zone 6, 200°C; Zone 7, 200°C; Zone 8, 200°C; Zone 9, 200°C; Zone 10, 200°C; Zone 11, 200°C. As in Example 1, the characteristics of pellet samples produced from these runs were tested and the pellets were made to produce good films using standard commercial blown film methods.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention describes a method for the manufacture of a plasticized polyvinyl alcoholpolymer mixture, the method comprising the steps of: introducing a polyvinyl alcoholpolymer comprising at least98wt% polyvinyl alcohol or a blend of the polymer into a mixing reactor, wherein the mixing reactor comprises a blending chamber having a primary inlet, a primary outlet and at least two inter-engaging components extending between the primary inlet and primary outlet, the components being arranged to apply a shearing force to the polymer while the polymer is conveyed by the components from the inlet through a reaction zone to the outlet; one or more secondary inlets located downstream from the primary inlet for introducing reactants comprising a processing agent and a plasticizer to the chamber to form a reaction mixture, wherein the blending chamber comprises a plurality of heated regions arranged so that the mixture is subjected to a controlled temperature profile; a secondary outlet located between the reaction zone and primary outlet arranged to allow removal of processing agent from the chamber; reacting a reaction mixture comprising the processing agent, plasticizer and polymerin the reaction zone to form plasticized polymer, wherein when the processing agent is water the amounts of water is from 3wt% to 18wt%; and allowing the plasticized polymer to pass from the primary outlet.
Description
technical field [0001] The invention relates to multi-polymers, in particular to a production process of polyvinyl alcohol. The invention also relates to the equipment used to implement the method. The invention further relates in particular, but not exclusively, to methods of making polyvinyl alcoholpellets in a suitable physical manner for processing into films or other extruded products. The invention further relates to a novel processable polyvinyl alcohol composition which can be produced using this process. Background technique [0002] Polyvinyl alcohol is usually made from hydrolyzed polyvinyl acetate. The degree of hydrolysis affects the properties of the polymer. Polyvinyl alcohol having a low degree of hydrolysis (LD) of 88% or less is widely used in the industry. [0003] Highly hydrolyzed polyvinyl acetate, ie having a degree of hydrolysis higher than 98%, is a copolymer mainly comprising homopolyvinyl alcohol. Like many carbohydrates, this polymer decompo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More