CN108003528A - A kind of preparation method of redispersable latex powder - Google Patents
A kind of preparation method of redispersable latex powder Download PDFInfo
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- CN108003528A CN108003528A CN201711294451.0A CN201711294451A CN108003528A CN 108003528 A CN108003528 A CN 108003528A CN 201711294451 A CN201711294451 A CN 201711294451A CN 108003528 A CN108003528 A CN 108003528A
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- latex powder
- redispersable latex
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- lotion
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
-
- 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
- C08J2333/00—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—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 only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The present invention discloses a kind of preparation method of redispersable latex powder, comprises the following steps：Parent lotion synthesizes：Modified polyvinylalcohol powder is dissolved in hot water, the temperature of the hot water is 70 90 DEG C, obtains modified poly ethylene alcoholic solution, and the concentration of the modified poly ethylene alcoholic solution is 16 25%, by polymer emulsion and the modified poly ethylene alcoholic solution by volume 2:1‑5:1 is mixed, and obtains parent lotion；Spray drying：In parent lotion incorporation anti-caking agent mixing, the incorporation of the anti-caking agent is 5% the 15% of the parent lotion weight, and the redispersable latex powder is obtained by spray drying.There is more superior tensile strength and elongation percentage after redispersable latex powder film forming, and lower water absorption rate, water resistance are more preferable.
Description
Technical field
The present invention relates to the technical field of latex powder, more particularly to a kind of preparation method of redispersable latex powder.
Background technology
Redispersable latex powder is widely used in ceramic tile adhesive, cement self-leveling, mortar of wall thermal insulating system etc..It is existing
The redispersable latex powder of technology production, adds polyvinyl alcohol as spraying after redisperse auxiliary agent generally in water-based emulsion
Dry, cohering for emulsion particle is difficult to avoid in the drying process so that improves the performance such as caking property and lifting hardening thing intensity
When cannot completely play, and use a large amount of PVA as redisperse auxiliary agent, the film forming water resistance of redisperse liquid decreases.
The content of the invention
The object of the present invention is to provide a kind of preparation method of redispersable latex powder, solve in above-mentioned prior art problem
One or more.
A kind of preparation method of redispersable latex powder provided by the invention, comprises the following steps：
A1, the synthesis of parent lotion：Modified polyvinylalcohol powder is dissolved in hot water, the temperature of the hot water is 70-90 DEG C,
Modified poly ethylene alcoholic solution is obtained, the concentration of the modified poly ethylene alcoholic solution is 16-25%, by polymer emulsion and described is changed
Property poly-vinyl alcohol solution by volume 2:1-5:1 is mixed, and obtains parent lotion；
A2, spray drying：In parent lotion incorporation anti-caking agent mixing, the incorporation of the anti-caking agent is described
The 5%-15% of parent lotion weight, the redispersable latex powder is obtained by spray drying.
In some embodiments, modified polyvinylalcohol is sulfhydryl modified polyvinyl alcohol.
In some embodiments, polymer emulsion is vinyl acetate-ethylene copolymer, vinyl acetate-versatic acid ethene
Ester copolymer, vinyl acetate-tertiary ethylene carbonate-propylene terpolymer, acrylate polymer, Styrene And Chloroalkyl Acrylates
One or more in copolymer.
In some embodiments, polymer emulsion is vinyl acetate-ethylene copolymer.
In some embodiments, anti-caking agent is calcium carbonate, clay, silica, alumina silicate, talcum powder, kaolin
In one or more.
In some embodiments, anti-caking agent is calcium carbonate.
In some embodiments, it is further comprising the steps of：The obtained redispersable latex powder and air are carried out
Cyclonic separation, the air are collected isolated redispersable latex powder by being discharged after bag filter.
Beneficial effect：The redispersable latex powder of sulfhydryl modified poly-vinyl alcohol solution production has more superior stretching by force
Degree and elongation percentage, and lower water absorption rate, water resistance are more preferable.
Embodiment
The present invention is described in more detail below by embodiment.
Case study on implementation 1：
A kind of preparation method of redispersable latex powder, comprises the following steps：
It is prepared by A1, modified poly ethylene alcoholic solution：The sulfhydryl modified pva powder of hot water dissolving in close dissolving kettle, with oneself
Water synchronously adds, and avoids dust from producing, and obtains modified poly ethylene alcoholic solution, wherein 70 DEG C of solution temperature, modified polyvinylalcohol
The concentration of solution is 16%；
It is prepared by A2, mixing liquid material：In proportion 2:1 leads to vinyl acetate-ethylene copolymer emulsion, modified poly ethylene alcoholic solution
Piping is transported in mixing kettle, is uniformly mixed at normal temperatures and pressures；
A3, spray drying：The liquid material mixed and powdered whiting are mixed, avoids dust from producing, passes through pipeline
Into closed spray drying tower, the centrifugal atomizing in the case where high speed rotates, dry-heat air (Combustion of Hot Air Furnace cigarette is blown into spray tower
Gas) drop rapid draing will be atomized, moisture in droplet is evaporated, while anti-caking agent powdered whiting is added into tower, its
The addition of middle powdered whiting is the 5% of parent lotion weight；
A4, cyclonic separation bag-type dust：Gas solid separation, carries out cyclonic separation, air passes through twice by latex powder and air
Air is discharged after cloth bag dedusting process, cyclonic separation efficiency is 90%, and two-stage bag-type dust efficiency reaches 99.9%, is amounted to
99.99% latex powder separated enters finished bin, packaging, redispersable latex powder A.
Case study on implementation 2：
A kind of preparation method of redispersable latex powder, comprises the following steps：
It is prepared by B1, modified poly ethylene alcoholic solution：The sulfhydryl modified pva powder of hot water dissolving in close dissolving kettle, with oneself
Water synchronously adds, and avoids dust from producing, and obtains modified poly ethylene alcoholic solution, wherein 90 DEG C of solution temperature, modified polyvinylalcohol
The concentration of solution is 25%；
It is prepared by B2, mixing liquid material：In proportion 5:1 by vinyl acetate-vinyl versatate copolymer lotion, modified poly ethylene
Alcoholic solution is pipelined in mixing kettle, is uniformly mixed at normal temperatures and pressures；
B3, spray drying：The liquid material mixed and clay are mixed, avoids dust from producing, is pipelined to closed
Spray drying tower in, high speed rotate under centrifugal atomizing, dry-heat air (Combustion of Hot Air Furnace flue gas) is blown into spray tower by mist
Drop rapid draing is changed, has evaporated moisture in droplet, while the addition of anti-caking agent clay, wherein clay is added into tower
For the 15% of parent lotion weight；
B4, cyclonic separation bag-type dust：Gas solid separation, carries out cyclonic separation, air passes through twice by latex powder and air
Air is discharged after cloth bag dedusting process, cyclonic separation efficiency is 90%, and two-stage bag-type dust efficiency reaches 99.9%, is amounted to
99.99% latex powder separated enters finished bin, packaging, redispersable latex powder B.
Case study on implementation 3：
A kind of preparation method of redispersable latex powder, comprises the following steps：
It is prepared by C1, modified poly ethylene alcoholic solution：The sulfhydryl modified pva powder of hot water dissolving in close dissolving kettle, with oneself
Water synchronously adds, and avoids dust from producing, and obtains modified poly ethylene alcoholic solution, wherein 80 DEG C of solution temperature, modified polyvinylalcohol
The concentration of solution is 20%；
It is prepared by C2, mixing liquid material：In proportion 3:Acrylate polymer emulsion, modified poly ethylene alcoholic solution are passed through pipe by 1
Road is transported in mixing kettle, is uniformly mixed at normal temperatures and pressures；
C3, spray drying：The liquid material mixed and talcum powder are mixed, avoids dust from producing, is pipelined to close
In the spray drying tower closed, the centrifugal atomizing in the case where high speed rotates, dry-heat air (Combustion of Hot Air Furnace flue gas) is blown into spray tower will
Drop rapid draing is atomized, has evaporated moisture in droplet, while anti-caking agent talcum powder is added into tower, wherein talcum powder
Addition is the 10% of parent lotion weight；
C4, cyclonic separation bag-type dust：Gas solid separation, carries out cyclonic separation, air passes through twice by latex powder and air
Air is discharged after cloth bag dedusting process, cyclonic separation efficiency is 90%, and two-stage bag-type dust efficiency reaches 99.9%, is amounted to
99.99% latex powder separated enters finished bin, and packaging, obtains redispersable latex powder C.
Wherein, sulfhydryl modified polyvinyl alcohol is purchased in Kuraray trade (Shanghai) Co., Ltd..
In spray-drying process, defoamer, such as butyl stearate, butyl palmitate, butyl laurate can be added,
Come a large amount of bubbles caused by reducing when mixing latex powder.
Contrast case：Redispersable latex powder D is prepared using common polythene alcohol.
Table one：For the physical parameter after the redispersable latex powder film forming in embodiment.
As can be known from the above table, the redispersable latex powder of the embodiment of the present application has more superior tensile strength and extension
Rate, and lower water absorption rate, water resistance are more preferable.
Presented above is only the preferred embodiment of the present invention, it is noted that to those skilled in the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these also should be regarded as the protection of the present invention
Within the scope of.
Claims (7)
1. a kind of preparation method of redispersable latex powder, it is characterised in that comprise the following steps：
A1, the synthesis of parent lotion：Modified polyvinylalcohol powder is dissolved in hot water, the temperature of the hot water is 70-90 DEG C, is obtained
Modified poly ethylene alcoholic solution, the concentration of the modified poly ethylene alcoholic solution is 16-25%, and polymer emulsion and the modification are gathered
Glycohol solution by volume 2:1-5:1 is mixed, and obtains parent lotion；
A2, spray drying：In parent lotion incorporation anti-caking agent mixing, the incorporation of the anti-caking agent is the parent
The 5%-15% of lotion weight, the redispersable latex powder is obtained by spray drying.
A kind of 2. preparation method of redispersable latex powder according to claim 1, it is characterised in that the poly- second of modification
Enol is sulfhydryl modified polyvinyl alcohol.
A kind of 3. preparation method of redispersable latex powder according to claim 1, it is characterised in that the polymer breast
Liquid is vinyl acetate-ethylene copolymer, vinyl acetate-vinyl versatate copolymer, vinyl acetate-tertiary ethylene carbonate-the third
One or more in enester terpolymer, acrylate polymer, Styrene-acrylic copolymer.
A kind of 4. preparation method of redispersable latex powder according to claim 3, it is characterised in that the polymer breast
Liquid is vinyl acetate-ethylene copolymer.
A kind of 5. preparation method of redispersable latex powder according to claim 1, it is characterised in that the anti-caking agent
For the one or more in calcium carbonate, clay, silica, alumina silicate, talcum powder, kaolin.
A kind of 6. preparation method of redispersable latex powder according to claim 5, it is characterised in that the anti-caking agent
For calcium carbonate.
7. the preparation method of a kind of redispersable latex powder according to claim 1, it is characterised in that further include following step
Suddenly：By the obtained redispersable latex powder and air carry out cyclonic separation, the air by being discharged after bag filter,
Isolated redispersable latex powder is collected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711294451.0A CN108003528A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of redispersable latex powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711294451.0A CN108003528A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of redispersable latex powder |
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| CN108003528A true CN108003528A (en) | 2018-05-08 |
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| CN201711294451.0A Pending CN108003528A (en) | 2017-12-08 | 2017-12-08 | A kind of preparation method of redispersable latex powder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110684307A (en) * | 2019-10-30 | 2020-01-14 | 安徽皖维花山新材料有限责任公司 | Water-resistant redispersible latex powder and preparation method thereof |
| CN112456889A (en) * | 2020-12-28 | 2021-03-09 | 成都寒禹玫建筑科技有限公司 | Preparation method of external wall thermal insulation material |
| CN113292806A (en) * | 2021-05-31 | 2021-08-24 | 山东卓俊实业有限公司 | Redispersible rubber powder and preparation method thereof |
| CN113337058A (en) * | 2021-05-31 | 2021-09-03 | 山东卓俊实业有限公司 | Premixed re-dispersed latex powder and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313028A (en) * | 2005-11-24 | 2008-11-26 | 日合·妙威尼尔株式会社 | Re-emulsifiable resin powder, aqueous emulsion and adhesive composition using same |
-
2017
- 2017-12-08 CN CN201711294451.0A patent/CN108003528A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101313028A (en) * | 2005-11-24 | 2008-11-26 | 日合·妙威尼尔株式会社 | Re-emulsifiable resin powder, aqueous emulsion and adhesive composition using same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110684307A (en) * | 2019-10-30 | 2020-01-14 | 安徽皖维花山新材料有限责任公司 | Water-resistant redispersible latex powder and preparation method thereof |
| CN110684307B (en) * | 2019-10-30 | 2022-04-22 | 安徽皖维花山新材料有限责任公司 | Water-resistant redispersible latex powder and preparation method thereof |
| CN112456889A (en) * | 2020-12-28 | 2021-03-09 | 成都寒禹玫建筑科技有限公司 | Preparation method of external wall thermal insulation material |
| CN113292806A (en) * | 2021-05-31 | 2021-08-24 | 山东卓俊实业有限公司 | Redispersible rubber powder and preparation method thereof |
| CN113337058A (en) * | 2021-05-31 | 2021-09-03 | 山东卓俊实业有限公司 | Premixed re-dispersed latex powder and preparation method thereof |
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Application publication date: 20180508 |
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