CN108727591A - A kind of platinum catalyst and its preparation process that room temperature activity is high - Google Patents
A kind of platinum catalyst and its preparation process that room temperature activity is high Download PDFInfo
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- CN108727591A CN108727591A CN201810460542.5A CN201810460542A CN108727591A CN 108727591 A CN108727591 A CN 108727591A CN 201810460542 A CN201810460542 A CN 201810460542A CN 108727591 A CN108727591 A CN 108727591A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
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Abstract
A kind of platinum catalyst and its preparation process that room temperature activity is high of the present invention, by 10-20 parts of dimethyl divinyl silane, 2-8 parts of tetramethyl divinyl disiloxane, 5-15 parts of absolute ethyl alcohol, 1-4 parts of sodium bicarbonate, 1 part of chloroplatinic acid, it puts into reactor, it is warming up to 40-70 DEG C of progress complex reaction, is reacted 2-6 hours；It is cooled to after room temperature and filters to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, and filtrate merges with thick catalyst complex；Thick catalyst complex is distilled under vacuum state at 40-70 DEG C, obtains high-concentration platinum complex compound catalyst, high concentration catalyst finished product is obtained after filtering, wherein platinum content is 15-25%；Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.The present invention has the advantages that room temperature activity is high.
Description
Technical field
The present invention relates to platinum catalyst technical fields, and in particular to a kind of platinum catalyst that room temperature activity is high.
Background technology
Organic silicon rubber has the performances such as high-low temperature resistant, weather-proof, UV resistant, insulation, radiation hardness, resistance to ozone, very much
Field is all widely used, such as：It is used to prepare electronic apparatus button, casting glue, coating materials for optical fibres, kitchenware cooker
Product etc..Addition-type silicon rubber in organic silicon rubber also has dimensionally stable, without sulphur other than with above-mentioned universal performance
Change product, product can be in direct contact the advantage of food and human body, thus be favored.The synthesis of addition-type silicon rubber is to be based on silicon hydrogen
Double bond in key and silico ethylene base carries out addition reaction to complete, by metal platinum and unsaturated olefin complex when addition reaction
Catalyst is essential, and the most commonly used is " Karst catalyst ".But the room temperature poor activity of Karst catalyst.
Invention content
The object of the present invention is to provide a kind of high platinum catalysts of room temperature that air-tightness is high activity.
The present invention is achieved through the following technical solutions above-mentioned purpose：A kind of platinum catalyst that room temperature activity is high, by weight
Meter, including following components：
10-20 parts of dimethyl divinyl silane；
2-8 parts of tetramethyl divinyl disiloxane；
5-15 parts of absolute ethyl alcohol；
1-4 parts of sodium bicarbonate；
1 part of chloroplatinic acid.
A kind of preparation process of the active high platinum catalyst of room temperature, includes the following steps：
By dimethyl divinyl silane, tetramethyl divinyl disiloxane, absolute ethyl alcohol, sodium bicarbonate, chloroplatinic acid, input
Into reactor, it is warming up to 40-70 DEG C of progress complex reaction, is reacted 2-6 hours；
Be cooled to after room temperature and filter to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, filtrate with slightly urge
Agent complex compound merges；
Thick catalyst complex is distilled under vacuum state at 40-70 DEG C, obtains high-concentration platinum complex compound catalyst, is filtered
High concentration catalyst finished product is obtained afterwards, and wherein platinum content is 15-25%；
Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.
Compared with prior art, the advantageous effect of the active high platinum catalyst of room temperature of the present invention is：Utilize dimethyl diethyl
The small feature of alkenyl silanes molecular weight, the activity of platinum is big in the complex compound of formation, improves the activity of platinum catalyst, adds tetramethyl
Divinyl disiloxane improves the stability of platinum catalyst as auxiliary complexing body.
Specific implementation mode
The present invention is further described below with reference to specific embodiment.
Embodiment 1
By weight, by 10 parts of dimethyl divinyl silane, 2 parts of tetramethyl divinyl disiloxane,
15 parts of absolute ethyl alcohol, 4 parts of sodium bicarbonate, 1 part of chloroplatinic acid, put into reactor, are warming up to 40 DEG C of progress complex reactions,
Reaction 6 hours；
Be cooled to after room temperature and filter to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, filtrate with slightly urge
Agent complex compound merges；
Thick catalyst complex is distilled under vacuum state at 40 DEG C, high-concentration platinum complex compound catalyst is obtained, after filtering
High concentration catalyst finished product is obtained, wherein platinum content is 25%；
Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.
Embodiment 2
By weight, by 20 parts of dimethyl divinyl silane, 8 parts of tetramethyl divinyl disiloxane,
5 parts of absolute ethyl alcohol, 1 part of sodium bicarbonate, 1 part of chloroplatinic acid, put into reactor, are warming up to 70 DEG C of progress complex reactions,
Reaction 2 hours；
Be cooled to after room temperature and filter to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, filtrate with slightly urge
Agent complex compound merges；
Thick catalyst complex is distilled under vacuum state at 70 DEG C, high-concentration platinum complex compound catalyst is obtained, after filtering
High concentration catalyst finished product is obtained, wherein platinum content is 15%；
Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.
Embodiment 3
By weight, by 15 parts of dimethyl divinyl silane, 5 parts of tetramethyl divinyl disiloxane,
10 parts of absolute ethyl alcohol, 2 parts of sodium bicarbonate, 1 part of chloroplatinic acid, put into reactor, are warming up to 50 DEG C of progress complex reactions,
Reaction 4 hours；
Be cooled to after room temperature and filter to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, filtrate with slightly urge
Agent complex compound merges；
Thick catalyst complex is distilled under vacuum state at 50 DEG C, high-concentration platinum complex compound catalyst is obtained, after filtering
High concentration catalyst finished product is obtained, wherein platinum content is 20%；
Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.
The platinum catalyst of the present invention is compared with general Karst catalyst, performance such as following table：
By the above test result it is found that room temperature activity of the present invention is apparently higher than general Karst catalyst.
The reason for this is that it is that complexing body carries out instead with chloroplatinic acid that Karst catalyst, which is with tetramethyl divinyl disiloxane,
It answers and obtains, it is contemplated that dimethyl divinyl silane and each molecule of tetramethyl divinyl disiloxane contain two ethylene
Base, and be all organic silicon, but dimethyl divinyl silane molecule amount is much smaller, can form corresponding complex compound, because
And the activity of platinum is also just much larger in complex compound, catalyst activity is also just much larger.
Body is complexed as auxiliary in the problem of in view of normal temperature storage stability, addition tetramethyl divinyl disiloxane,
The efficient platinum catalyst that room temperature activity is high and stablizes can thus be obtained.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
The bright method and its core concept for being merely used to help understand the present invention, including best mode, and but also this field is appointed
What technical staff can put into practice the present invention, including manufacture and use any device or system, and implement the method for any combination.
It should be pointed out that for those skilled in the art, it without departing from the principle of the present invention, can also be right
Some improvement and modification can also be carried out by the present invention, these improvement and modification are also fallen within the protection scope of the claims of the present invention.This hair
The range of bright patent protection is defined by the claims, and may include those skilled in the art it is conceivable that other implementation
Example.If these other embodiments, which have, is similar to the structural element of claim character express, or if they include with
Equivalent structural elements of the character express of claim without essence difference, are wanted then these other embodiments should also be included in right
In the range of asking.
Claims (2)
1. a kind of platinum catalyst that room temperature activity is high, which is characterized in that by weight, including following components：
10-20 parts of dimethyl divinyl silane；
2-8 parts of tetramethyl divinyl disiloxane；
5-15 parts of absolute ethyl alcohol；
1-4 parts of sodium bicarbonate；
1 part of chloroplatinic acid.
2. a kind of preparation process of the high platinum catalyst of the activity of room temperature described in claim 1, which is characterized in that including following step
Suddenly：
By dimethyl divinyl silane, tetramethyl divinyl disiloxane, absolute ethyl alcohol, sodium bicarbonate, chloroplatinic acid, input
Into reactor, it is warming up to 40-70 DEG C of progress complex reaction, is reacted 2-6 hours；
Be cooled to after room temperature and filter to get filtrate as thick catalyst complex, filter residue washs with absolute ethyl alcohol, filtering, filtrate with slightly urge
Agent complex compound merges；
Thick catalyst complex is distilled under vacuum state at 40-70 DEG C, obtains high-concentration platinum complex compound catalyst, is filtered
High concentration catalyst finished product is obtained afterwards, and wherein platinum content is 15-25%；
Above-mentioned high concentration catalyst finished product is diluted to the platinum catalyst for needing the room temperature activity of concentration high with vinyl silicone oil.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007693A (en) * | 2020-08-27 | 2020-12-01 | 苏州市贝特利高分子材料股份有限公司 | High-activity platinum catalyst for single-component silicone rubber and preparation method thereof |
| CN114160204A (en) * | 2021-12-08 | 2022-03-11 | 江西贝特利新材料有限公司 | Supported platinum catalyst and preparation method thereof |
| CN114806426A (en) * | 2022-05-23 | 2022-07-29 | 常州艾龙森汽车饰件有限公司 | Automobile door waterproof film with isolation layer and preparation method thereof |
| CN115582146A (en) * | 2022-09-28 | 2023-01-10 | 广州市矽友新材料科技有限公司 | High-yellowing-resistance platinum catalyst and preparation method thereof |
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| US5446113A (en) * | 1994-04-28 | 1995-08-29 | General Electric Company | Method for making heat curable zero valent platinum-vinylsilane silicone compositions |
| CN105797775A (en) * | 2016-03-23 | 2016-07-27 | 安徽正洁高新材料股份有限公司 | Method for preparing vinyl platinum catalyst for hydrosilylation |
| CN107189071A (en) * | 2017-06-23 | 2017-09-22 | 广东信翼科技有限公司 | A kind of preparation method of liquid silastic platinum catalyst |
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2018
- 2018-05-15 CN CN201810460542.5A patent/CN108727591A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5446113A (en) * | 1994-04-28 | 1995-08-29 | General Electric Company | Method for making heat curable zero valent platinum-vinylsilane silicone compositions |
| CN105797775A (en) * | 2016-03-23 | 2016-07-27 | 安徽正洁高新材料股份有限公司 | Method for preparing vinyl platinum catalyst for hydrosilylation |
| CN107189071A (en) * | 2017-06-23 | 2017-09-22 | 广东信翼科技有限公司 | A kind of preparation method of liquid silastic platinum catalyst |
Non-Patent Citations (2)
| Title |
|---|
| LARRY N. LEWIS ET AL.: ""Mechanism of Formation of Platinum(O) Complexes Containing Silicon-Vinyl Ligands"", 《ORGANOMETALLICS》 * |
| 谭必恩等: "有机硅工业中的铂催化剂研究进展", 《宇航材料工艺》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112007693A (en) * | 2020-08-27 | 2020-12-01 | 苏州市贝特利高分子材料股份有限公司 | High-activity platinum catalyst for single-component silicone rubber and preparation method thereof |
| CN114160204A (en) * | 2021-12-08 | 2022-03-11 | 江西贝特利新材料有限公司 | Supported platinum catalyst and preparation method thereof |
| CN114806426A (en) * | 2022-05-23 | 2022-07-29 | 常州艾龙森汽车饰件有限公司 | Automobile door waterproof film with isolation layer and preparation method thereof |
| CN115582146A (en) * | 2022-09-28 | 2023-01-10 | 广州市矽友新材料科技有限公司 | High-yellowing-resistance platinum catalyst and preparation method thereof |
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