Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A high-viscosity, high-viscosity technology, applied in the direction of adhesives, etc., can solve problems such as process control instability, and achieve the effects of high product yield, strong adhesion ability, and simple preparation process
Active Publication Date: 2012-07-11
JIANGXI BLUESTAR XINGHUO SILICONE CO LTD
View PDF1 Cites 26 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
The intermediate process control of this process is determined by the results of the intermediate control analysis, the process control is unstable, and there is also waiting waste
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0012] A preparation method for high-viscosity 107 glue, according to the following weight ratio: 200 parts of DMC and 6 parts of 107 glue with a viscosity of 100cs are added in a reaction vessel equipped with a stirrer, a thermometer and a condensation reflux pipe, and the stirring is started, and the temperature is raised to At 110°C, add 15ppm potassium hydroxide or its silicon alkoxide alkali gel, and react at 150°C for 2 hours, add 15ppm phosphoric acid or its silicon alkoxide hydrochloride gel for direct neutralization, stir for 1 hour, at 1KPa / 180°C Remove until there is no distillate, and obtain 178.2 parts of modified 107 glue with a viscosity (25°C) of 480,000 cs, colorless, transparent and high viscosity, and a yield of 86.5%.
Embodiment 2
[0014] A preparation method of high-viscosity 107 glue, according to the following weight ratio: 200 parts of DMC and 30 parts of 107 glue with a viscosity of 750cs are added to a reaction vessel equipped with a stirrer, a thermometer and a condensing return pipe, and the stirring is started, and the temperature is raised to 110 Add 50ppm tetramethylammonium hydroxide or its silicon alkoxide alkaline gel catalyst at ℃, and react at this temperature for 3 hours, heat up and decompose the catalyst, and then decompose at 1KPa / 180℃ until there is no distillate, and the viscosity ( 25 ℃) 320,000 cs, 199.4 parts of modified 107 glue, colorless, transparent and high viscosity, with a yield of 86.7%; the yield is high.
Embodiment 3
[0016] A preparation method of high-viscosity 107 glue, according to the following weight ratio: 200 parts of DMC and 50 parts of 107 glue with a viscosity of 1500cs are added to a reaction vessel equipped with a stirrer, a thermometer and a condensing return pipe, and the stirring is started, and the temperature is raised to 100 Add 110ppm tetrabutyl phosphosilicate hydroxide alkali gel catalyst at ℃, and react at this temperature for 4 hours, heat up to decompose the basic catalyst, and then decompose at 1KPa / 180℃ until there is no distillate, and the viscosity (25℃ ) 800,000 cs, 215 copies of modified 107 glue, colorless, transparent and high viscosity, with a yield of 86.0%.
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 relates to a preparation method for high-viscosity 107 glue. The preparation method comprises the following steps of: adding a certain amount of DMC (Dimethyl Carbonate) and 107 glue of which the viscosity is 100-1,500 cs or a certain amount of DMC into a reactor provided with a stirrer, a thermometer and a condensation reflowing pipe, starting stirring, heating to a certain temperature, and adding an alkali catalyst, wherein the alkali catalyst comprises one of potassium hydroxide, tetramethylammonium hydroxide pentahydrate, tetrabutyl phosphorus oxychloride or silicon alkoxidealkali gel of the alkalis; undergoing a balanced reaction at the temperature for certain hours, and directly neutralizing or heating for decomposing the alkali catalyst; and adding a phosphoric acid or silanol hydrochloric acid gel neutralizing agent of which the mass is equal to that of the catalyst under the condition that neutralization is performed, or directly heating for decomposing the alkali catalyst under the condition that neutralization is not performed, continuously stirring for 1 hour, and removing low-boiling-point substances. The high-viscosity 107 glue prepared with the methodhas the advantages of simple preparation process, stable viscosity, high product yield and capability of meeting production requirements.
Description
technical field [0001] The invention relates to a preparation method of 107 glue, in particular to a preparation method of high-viscosity 107 glue. Background technique [0002] Gum 107 is a hydroxyl terminated polydimethylsiloxane. It can be cured at room temperature with cross-linking agent and catalyst, and can maintain elasticity for a long time in the temperature range of -60 to 200 ° C. It has excellent electrical properties and chemical stability, and is resistant to water and weathering. Widely used in construction joints, insulation of electronic components, shockproof, moisture-proof, anti-corrosion, mold-making, demoulding of rubber and plastic products, as leather slip agent, release agent, etc. Special specifications can be used in fabric finishing and daily chemical industry superior. [0003] At present, the technological process of high viscosity 107 glue (>200,000 CS) is that DMC is first dehydrated at a certain temperature and under vacuum. Viscosity,...
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