CN108383947A - A kind of method of modifying of VAE lotions and 4- tert-butylbenzoates - Google Patents
A kind of method of modifying of VAE lotions and 4- tert-butylbenzoates Download PDFInfo
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- CN108383947A CN108383947A CN201810256367.8A CN201810256367A CN108383947A CN 108383947 A CN108383947 A CN 108383947A CN 201810256367 A CN201810256367 A CN 201810256367A CN 108383947 A CN108383947 A CN 108383947A
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- vae
- tert
- added
- butylbenzoates
- modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F263/00—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00
- C08F263/02—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00 on to polymers of vinyl esters with monocarboxylic acids
- C08F263/04—Macromolecular compounds obtained by polymerising monomers on to polymers of esters of unsaturated alcohols with saturated acids as defined in group C08F18/00 on to polymers of vinyl esters with monocarboxylic acids on to polymers of vinyl acetate
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
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- 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
- C08J2331/00—Characterised by the use of copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
- C08J2331/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
- C08J2331/04—Homopolymers or copolymers of vinyl acetate
-
- 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
- C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2401/08—Cellulose derivatives
- C08J2401/26—Cellulose ethers
- C08J2401/28—Alkyl ethers
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- 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
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention discloses a kind of method of modifying of VAE lotions and 4 tert-butylbenzoates, including following preparation process：Step 1: the preparation of pre-emulsion；VAE lotions are added in reaction kettle and are stirred, emulsifier, protecting colloid and deionized water are then sequentially added into reaction kettle, pre-emulsion is made then after high-speed stirred with salt acid for adjusting pH value；Step 2: modified-reaction；4 tert-butylbenzoate of liquid is added into reaction kettle, hydrogenperoxide steam generator is added dropwise, antifoaming agent obtains modified product；Step 3: centrifugation, drying；Auxiliary agent and protecting colloid aqueous solution are added into obtained modified product, modified VAE latex powder is made after being atomized, drying, enters antitack agent disastrously into modified VAE latex powder, polymer dispersion powder is made after mixing.The present invention glues that less sticky, water resistance is low, the technical problem of flexible difference is improved for existing latex, and modified VAE lotions have the characteristics that high, the viscous stickiness of water resistance is good, flexible.
Description
Technical field
The present invention relates to viscous viscose preparation method field more particularly to a kind of VAE lotions and 4- p t butylbenzoic acid ethylene
The method of modifying of ester.
Background technology
VAE lotions are the abbreviations of vinyl acetate-ethylene copolymerization emulsions, be with vinyl acetate and vinyl monomer are substantially former
Macromolecule emulsion made of emulsifier and initiator are copolymerized by high pressure emulsion polymerization is added in material.VAE lotions are mainly used for
Adhesive, coating, cement modifier and paper conversion have many excellent performances.VAE lotions have permanent flexibility, it
The internal plasticization product that can be regarded as polyvinyl acetate emulsion, since it introduces ethylene molecule in polyvinyl acetate molecule
Chain makes acetyl group generate discontinuity, increases the rotary freedom of macromolecular chain, steric restriction is small, and high polymer main chain becomes
Softness, and the migration of plasticizer will not occur, it ensure that product is permanently soft.VAE lotions have preferable resistance to acid and alkali,
VAE lotions can keep stability under weak acid and weak base existence condition, no matter therefore it mixed all with weak acid or weak base
Demulsifying phenomenon will not occur, products application range is wider.VAE lotions can ultraviolet-resistant aging, due to VAE lotions be use second
Reactive plasticizer of the alkene as copolymer makes VAE polymer that there is internal plasticization, plasticizer will not migrate, so as to avoid
Polymer performance aging.Therefore, be not only VAE lotions has good stability to ultraviolet light, is exactly same after VAE emulsion film formings
Also this feature can be kept.VAE lotions have good film forming, and lotion adhesive can only form transparent in a certain temperature
Film, this temperature is minimum film formation temperature.VAE minimum film formation temperature is generally below 5 DEG C, therefore can form a film very well, epithelium
There is preferable barrier property to water droplet.VAE lotions have good cementability, it is to fiber, timber, paper, plastic film, aluminium
The products such as foil, cement, ceramics have good adhesive effect.
In 4- tert-butylbenzoate molecules, there is abundant alkyl on alpha-carbon atom, form great space bit
Inhibition effect and shielding action not only also play the effect of protection to itself but also to the group of surrounding；Due to the non-pole of alkyl
Property and to the stability of ultraviolet light so that 4- tert-butylbenzoates molecule shows fabulous when being copolymerized with vinyl acetate
Reactivity.
The present invention is by the way that 4- tert-butylbenzoates molecule and VAE lotions to be modified so that the polymerization of preparation
Object has better weatherability, flexibility, stability, alkali resistance, scrub resistance, meets the extensive of building trade and other fields
It uses.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of VAE lotions and 4- p t butylbenzoic acids
The method of modifying of vinyl acetate, to solve, existing latex weatherability is poor, water resistance is not high, flexible difference and the skills such as inconvenient to carry
Art problem；In order to solve the above technical problems, the invention discloses following solution；
The invention discloses a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, including following preparation
Step：
Step 1: the preparation of pre-emulsion
VAE lotions are added in reaction kettle and are stirred, emulsifier, protecting colloid are then sequentially added into reaction kettle and are gone
Ionized water is 3-5 with salt acid for adjusting pH value, and then after high-speed stirred, pre-emulsion is made；
Step 2: modified-reaction
Liquid 4- tert-butylbenzoates are added into reaction kettle, a concentration of 5% hydrogenperoxide steam generator are added dropwise, instead
It answers the control of kettle temperature degree at 55-65 DEG C, after stirring 2 hours, antifoaming agent is added, is cooled to room temperature, obtains modified product；
Step 3: centrifugation, drying
Auxiliary agent and protecting colloid aqueous solution are added in the modified product obtained into step 2, is sprayed after mixing
Modified VAE latex powder is made in liquid after centrifugal spray drier atomization, drying, enters disastrously into modified VAE latex powder anti-sticking
Polymer dispersion powder is made in agent after mixing.
Further, the protecting colloid in step 1 and step 3 is polyvinyl alcohol, and emulsifier is stearic acid polyoxyethylene
Ester, polyoxylethylene abietate or alkyl polyoxyethylene ether succinate sulfonate.
Further, in order to preferably be convenient for carrying latex, the antitack agent in step 3 is ABS antitack agents.
Further, the mass ratio of VAE lotions and 4- tert-butylbenzoates is 3-4:1.
Further, the auxiliary agent in step 3 is naphthalenesulfonic acid-formaldehyde condensate and sodium carboxymethylcellulose in mass ratio 1:
1.5 mixtures prepared.
Further, antifoaming agent is polyoxyethylene polyoxy propyl alcohol amidogen ether.
The invention discloses a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, by by VAE lotions
Be modified with liquid 4- tert-butylbenzoates, and to polymer-modified middle addition auxiliary agent and protecting colloid aqueous solution, through from
Modified VAE latex powder is made after the atomization of heart spray dryer, drying, enters antitack agent disastrously into modified VAE latex powder, mixes
Obtained polymer dispersion powder is had to preferably be convenient for carrying and use using emulsion polymer made from this programme after uniformly
There are the weatherability of superelevation, flexibility, stability, alkali resistance, scrub resistance, meets making extensively for building trade and other fields
With.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
Embodiment 1 discloses a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, including following preparation
Step：
Step 1: the preparation of pre-emulsion
3 kilograms of VAE lotions are added in reaction kettle and are stirred, 50 grams of stearic acid polyoxies are then sequentially added into reaction kettle
Vinyl acetate emulsifier, 65 grams of polyvinyl alcohol and 500ml deionized waters are 3 with salt acid for adjusting pH value, then after high-speed stirred,
Pre-emulsion is made；
Step 2: modified-reaction
1 kilogram of liquid 4- tert-butylbenzoate is added into reaction kettle, the hydrogen peroxide of dropwise addition a concentration of 5% is molten
Liquid 150ml, temperature of reaction kettle is controlled at 55 DEG C, and after stirring 2 hours, 200ml antifoaming agent polyoxyethylene polyoxy propyl alcohol amidogen ethers are added,
It is cooled to room temperature, obtains modified product；
Step 3: centrifugation, drying
100 grams of naphthalenesulfonic acid-formaldehyde condensates and 150 grams of carboxymethyl fibres are added in the modified product obtained into step 2
The plain sodium of dimension and 140ml polyvinyl alcohol water solutions, obtain spray liquid after mixing, after centrifugal spray drier atomization, drying
Modified VAE latex powder is made, enters 25 grams of ABS antitack agents disastrously into modified VAE latex powder, is made dispersible after mixing
Latex powder.Wherein, the naphthalenesulfonic acid-formaldehyde condensate in step 3 and sodium carboxymethylcellulose are auxiliary agent.
Embodiment 2
Embodiment 2 discloses a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, including following preparation
Step：
Step 1: the preparation of pre-emulsion
3.5 kilograms of VAE lotions are added in reaction kettle and are stirred, 70 grams of rosin acids are then sequentially added into reaction kettle
Polyoxyethylene ester emulsifier, 88 grams of polyvinyl alcohol and 800ml deionized waters are 5 with salt acid for adjusting pH value, then through high-speed stirred
Afterwards, pre-emulsion is made；
Step 2: modified-reaction
1 kilogram of liquid 4- tert-butylbenzoate is added into reaction kettle, the hydrogen peroxide of dropwise addition a concentration of 5% is molten
Liquid 210ml, temperature of reaction kettle is controlled at 65 DEG C, and after stirring 2 hours, 250ml polyoxyethylene polyoxy Propanolamine ether defoaming agents are added,
It is cooled to room temperature, obtains modified product；
Step 3: centrifugation, drying
100 grams of naphthalenesulfonic acid-formaldehyde condensates of auxiliary agent, 150 grams of carboxymethyls are added in the modified product obtained into step 2
Sodium cellulosate and 180ml polyvinyl alcohol water solutions, obtain spray liquid after mixing, through centrifugal spray drier atomization, drying
Modified VAE latex powder is made afterwards, enters 28 grams of ABS antitack agents disastrously into modified VAE latex powder, being made can divide after mixing
Dissipate latex powder.Wherein, the naphthalenesulfonic acid-formaldehyde condensate in step 3 and sodium carboxymethylcellulose are auxiliary agent.
Embodiment 3
Embodiment 3 discloses a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, including following preparation
Step：
Step 1: the preparation of pre-emulsion
4 kilograms of VAE lotions are added in reaction kettle and are stirred, it is poly- that emulsifier alkyl is then sequentially added into reaction kettle
Ethylene oxide ether succinate sulfonate, polyvinyl alcohol and deionized water, are 3-5 with salt acid for adjusting pH value, then through high-speed stirred
Afterwards, pre-emulsion is made；
Step 2: modified-reaction
1 kilogram of liquid 4- tert-butylbenzoates are added into reaction kettle, a concentration of 5% hydrogen peroxide is added dropwise
Solution, temperature of reaction kettle is controlled at 55-65 DEG C, after stirring 2 hours, polyoxyethylene polyoxy propyl alcohol amidogen ether is added, is cooled to room temperature,
Obtain modified product；
Step 3: centrifugation, drying
100 grams of naphthalenesulfonic acid-formaldehyde condensates of auxiliary agent, 150 grams of carboxymethyls are added in the modified product obtained into step 2
Sodium cellulosate and 180ml polyvinyl alcohol water solutions, obtain spray liquid after mixing, through centrifugal spray drier atomization, drying
Modified VAE latex powder is made afterwards, enters 40 grams of ABS antitack agents disastrously into modified VAE latex powder, being made can divide after mixing
Dissipate latex powder.Wherein, the naphthalenesulfonic acid-formaldehyde condensate in step 3 and sodium carboxymethylcellulose are auxiliary agent.
Experiment test is carried out by modification VAE latex powder to being obtained in embodiment 1-3 and unmodified VAE lotions,
Obtain following data：
Table one
It can be seen that using the modified VAE latex powder of this programme in water resistance side by the test data to table one
Face is greatly improved than unmodified VAE lotions tool, while fracture elongation, viscous viscosity etc. be not also considerably beyond changing
The VAE lotions of property；Modified grain size significantly reduces, and which increases the viscous glutinous specific surface areas of unit, are provided for viscous glutinous effect
Ensure.
Present invention is not limited to the embodiments described above, within the knowledge of those skilled in the art, can be with
The various change made without departing from the purpose of the present invention, the content after variation, which is appointed, belongs to the scope of protection of the invention.
Claims (6)
1. a kind of method of modifying of VAE lotions and 4- tert-butylbenzoates, which is characterized in that walked including following preparation
Suddenly：
Step 1: the preparation of pre-emulsion
VAE lotions are added in reaction kettle and are stirred, emulsifier, protecting colloid and deionization are then sequentially added into reaction kettle
Water is 3-5 with salt acid for adjusting pH value, and then after high-speed stirred, pre-emulsion is made；
Step 2: modified-reaction
Liquid 4- tert-butylbenzoates are added into reaction kettle, a concentration of 5% hydrogenperoxide steam generator, reaction kettle is added dropwise
Temperature is controlled at 55-65 DEG C, after stirring 2 hours, antifoaming agent is added, is cooled to room temperature, obtains modified product；
Step 3: centrifugation, drying
Auxiliary agent and protecting colloid aqueous solution are added in the modified product obtained into step 2, obtains spray liquid after mixing,
Modified VAE latex powder is made after centrifugal spray drier atomization, drying, enters disastrously into the modified VAE latex powder anti-
Polymer dispersion powder is made in stick after mixing.
2. the method for modifying of VAE lotions and 4- tert-butylbenzoates as described in claim 1, which is characterized in that step
Rapid one and step 3 described in protecting colloid be polyvinyl alcohol, the emulsifier is that polyoxyethylene stearic acid ester, rosin acid are poly-
Ethylene oxide ester or alkyl polyoxyethylene ether succinate sulfonate.
3. the method for modifying of VAE lotions and 4- tert-butylbenzoates as described in claim 1, which is characterized in that step
The antitack agent in rapid three is ABS antitack agents.
4. the method for modifying of VAE lotions and 4- tert-butylbenzoates as described in claim 1, which is characterized in that institute
The mass ratio for stating VAE lotions and 4- tert-butylbenzoates is 3-4:1.
5. the method for modifying of VAE lotions and 4- tert-butylbenzoates as described in claim 1, which is characterized in that institute
It is naphthalenesulfonic acid-formaldehyde condensate and sodium carboxymethylcellulose in mass ratio 1 to state the auxiliary agent in step 3:1.5 mixing prepared
Object.
6. the method for modifying of VAE lotions and 4- tert-butylbenzoates as described in claim 1, which is characterized in that institute
It is polyoxyethylene polyoxy propyl alcohol amidogen ether to state antifoaming agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810256367.8A CN108383947A (en) | 2018-03-27 | 2018-03-27 | A kind of method of modifying of VAE lotions and 4- tert-butylbenzoates |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810256367.8A CN108383947A (en) | 2018-03-27 | 2018-03-27 | A kind of method of modifying of VAE lotions and 4- tert-butylbenzoates |
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| CN108383947A true CN108383947A (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810256367.8A Pending CN108383947A (en) | 2018-03-27 | 2018-03-27 | A kind of method of modifying of VAE lotions and 4- tert-butylbenzoates |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408241A (en) * | 2013-07-23 | 2013-11-27 | 上海法普罗新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
| CN103665231A (en) * | 2012-09-10 | 2014-03-26 | 中国石油化工集团公司 | Vinyl acetate-ethylene-vinyl versatate copolymer emulsion and synthesis method thereof |
-
2018
- 2018-03-27 CN CN201810256367.8A patent/CN108383947A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665231A (en) * | 2012-09-10 | 2014-03-26 | 中国石油化工集团公司 | Vinyl acetate-ethylene-vinyl versatate copolymer emulsion and synthesis method thereof |
| CN103408241A (en) * | 2013-07-23 | 2013-11-27 | 上海法普罗新材料股份有限公司 | Redispersible emulsion powder and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张绍华: "叔碳酸乙烯酯改性VAE乳液的研究", 《粘接》 * |
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Application publication date: 20180810 |