CN1796424A - Method for fabricating mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste - Google Patents
Method for fabricating mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste Download PDFInfo
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- CN1796424A CN1796424A CN 200410093987 CN200410093987A CN1796424A CN 1796424 A CN1796424 A CN 1796424A CN 200410093987 CN200410093987 CN 200410093987 CN 200410093987 A CN200410093987 A CN 200410093987A CN 1796424 A CN1796424 A CN 1796424A
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- chloroacetic
- polyvinyl chloride
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Abstract
A production method for vinyl chloride-vinyl acetate (VA/VAc) copolymer resin used for poly (vinyl chloride) paste is introduced here. In this method, the first monomer vinyl chloride, the second monomer vinyl acetate, water-soluble dispersants, particle size-stabilizers, lubricants, oil-soluble initiators and pH value-adjustors are mixture together at one time in the presence of high-speed stir and the reaction is kept at a raised temperature of 40~60 deg.C for 0.2~1.5 hours; then the stir speed is lowered and reaction is further kept for 5.5~8.0 hours; finally, the reaction pressure is lowered by 0.15~0.2MPa and terminators and defoamers are added. Eligible VA/VAc copolymer resin for paste can be obtained after drying and separation of the consequent product.
Description
Affiliated technical field
Mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste production method of the present invention belongs to a kind of production method that is used for the polyvinyl chloride copolymerization blending resin of chemical building material aspect.
Background technology
In resin admixture for polyvinyl chloride paste is produced, when system viscosity is maximum, be difficult to keep the primary status of particle, because the shearing force that stirs, gained copolymerization blending resin grain diameter inequality, concentration ratio are lower, can't reduce between the particle boning, thereby can't obtain the very high paste of concentration ratio copolymerization blending resin.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of use for polyvinyl chloride paste ethene and vinyl acetate between to for plastic copolymerization blending resin, this method is when copolymerization reaches a certain transformation efficiency, change agitator speed, make it change the shearing force that stirs, gained chlorine mixing resin of chloroacetic copolymerization grain diameter homogeneous, concentration ratio height.In polyreaction, when system viscosity is maximum, reducing agitator speed reduces shearing force, to keep the primary status of particle, bonding obtains the very high paste of concentration ratio adopts the advanced person with the present invention of copolymerization blending resin polymerization technique and prescription between the particle thereby reduce, with the stirring system of uniqueness, obtain the paste chlorine mixing resin of chloroacetic copolymerization of better quality.Be with the first monomer vinylchlorid, the second monomer vinyl acetate between to for plastic, water-soluble dispersion agent, whole granula, lubricant, oil-soluble initiator and pH value conditioning agent, two kinds of monomers once add, under the agitator high-speed stirring, make its full and uniform mixing, be warming up to 40～60 ℃, reaction was carried out 0.2～1.5 hour, reduce the rotating speed of agitator, reacted 5.5～8.0 hours, 0.15～0.2Mpa falls in reaction pressure, adds terminator and defoamer.Can obtain qualified product of the present invention through separation, drying.
The used main raw material of the present invention is liquid vinylchlorid and vinyl acetate between to for plastic, adjuvant used water soluble dispersing agent, whole granula, lubricant, oil-soluble initiator, pH value conditioning agent and the terminator of comprising.Described water soluble dispersing agent is general Vltra tears, Natvosol, methylcellulose gum, polyvinyl alcohol or gelatin, and its consumption is 0.07～0.4% of a monomer mass; Described lubricant is clorafin, paraffin, stearic acid, Zinic stearas, lipid acid and Fatty Alcohol(C12-C14 and C12-C18); Described whole granula is sodium sulphite, sodium sulfate, S-WAT, Sodium Nitrite; Described initiator is azo compound and peroxide compound, and its consumption is with initiator activity and polymerization temperature and decide; Described pH value conditioning agent is sodium hydroxide, yellow soda ash, sodium bicarbonate, bicarbonate of ammonia, ammoniacal liquor; Described terminator is acetone semicarbazone sulphur urine and dihydroxyphenyl propane mixture; Described defoamer is the organo-siloxane emulsion.The above raw material both can use separately, also can compoundly use.
The present invention adopts advanced polymeric composite formula system, red-tape operati program and operational condition, especially two kinds of monomers adopt the method that once adds, the complicated technology of having avoided gradation to add, controlled the vinegar content of resin effectively, add whole granula and lubricant in the polymerization system and eliminated the resin particle adhesion problem effectively, in operating procedure, adopted polyreaction to change agitator speed midway, resin particle concentration ratio height is played keying action.When the control molecular weight, fall 1～3 ℃, stick with paste with chlorine vinegar blending resin thereby obtained high quality than average polymerization temperature of reaction.
Mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste preparation method advantage of the present invention is, has on original common loose type Production of PVC technology simply to transform, and two kinds of monomers once add, and preparation technology is simple, less investment, and cost is low.Prepared paste absorbs softening agent≤18% with chlorine mixing resin of chloroacetic copolymerization particle diameter≤100 μ m, apparent density 〉=0.50g/ml, and vinegar content is 3.0～15.0%.This resin and pvc resin paste grade can reduce paste viscosity significantly by a certain amount of paste that is mixed with, and increase flowing property.Its principal feature is to reduce the plastipaste plasticization temperature, shortens fusion time.Be used in wall paper, leatheroid, tarpaulin and add man-hour, be coated with to scrape and glue cutter; When being used in metallic coating, the performance of slurry embodies more outstandingly; More firm as automobile primer and metal covering bonded.It also is used as the magnetic card surface layer in addition, has wear-resisting and static resistance.
Embodiment
Embodiment 1:
With 30L stainless steel polymeric kettle is major equipment, deionized water 16L will be added in the polymeric kettle, vinyl acetate between to for plastic 800ml, polyvinyl alcohol 20g, peroxy dicarbonate two (the own fat of 2-ethyl) 2ml, 2,2'-Azobis(2,4-dimethylvaleronitrile) 4.2g, bicarbonate of ammonia 3g, stearic acid 8g, sodium sulphite 6g, S-WAT 0.75g, first-class kettle cover, vacuumize deoxidation in the still, be pressed into 9.2L vinylchlorid, the cold 20min that stirs under the 500rpm mixing speed, be warming up to 54 ℃, reaction 60min reduces mixing speed to 120rpm, reaction times is 7.5 hours, 0.1～0.2MPa falls in question response pressure, add terminator (acetone semicarbazone sulphur urine and dihydroxyphenyl propane mixture) and defoamer (organo-siloxane emulsion), after the discharging,, be drying to obtain mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste through centrifugation.
Embodiment 2:
With 5.3 cubic metres of stainless steel polymeric kettles is major equipment, deionized water 1.7M3 will be added in the polymeric kettle, vinyl acetate between to for plastic 170L, Vltra tears 4.0kg, peroxy dicarbonate two (the own fat of 2-ethyl) 650L, 2,2'-Azobis(2,4-dimethylvaleronitrile) 140g, bicarbonate of ammonia 530g, Zinic stearas 450g, sodium sulphite 1.0kg, S-WAT 40g, first-class kettle cover, vacuumize deoxidation in the still, be pressed into 170L vinylchlorid, the cold 20min that stirs under the 300rpm mixing speed, be warming up to 54.5 ℃, reaction 50min reduces mixing speed to 48rpm, reaction times is 7.5 hours, when 0.1～0.2MPa falls in question response pressure, add terminator (acetone semicarbazone sulphur urine) and defoamer (organo-siloxane), after the discharging,, be drying to obtain mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste through centrifugation.
Claims (4)
1, a kind of production method of mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste, it is characterized in that: be the first monomer vinylchlorid, the second monomer vinyl acetate between to for plastic, water-soluble dispersion agent, whole granula, lubricant, oil-soluble initiator and pH value conditioning agent, add in the agitator high-speed stirring next time, make its uniform mixing, be warming up to 40～60 ℃, reaction was carried out 0.2～1.5 hour, reduce the rotating speed of agitator, reacted 5.5～8.0 hours, 0.15～0.2Mpa falls in reaction pressure, adds terminator and defoamer.
2, production method according to the described mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste of claim 1, it is characterized in that: described first monomer is a vinylchlorid, second monomer is a vinyl acetate between to for plastic, described water soluble dispersing agent is general Vltra tears, Natvosol, methylcellulose gum, polyvinyl alcohol or gelatin, described lubricant is a clorafin, paraffin, stearic acid, Zinic stearas and Fatty Alcohol(C12-C14 and C12-C18), described whole granula is a sodium sulphite, sodium sulfate, S-WAT, Sodium Nitrite, described initiator is azo compound and peroxide compound, described pH value conditioning agent is a sodium hydroxide, yellow soda ash, sodium bicarbonate, bicarbonate of ammonia, ammoniacal liquor, described terminator is acetone semicarbazone sulphur urine and dihydroxyphenyl propane mixture, and described defoamer is the organo-siloxane emulsion.
3, production method according to the described mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste of claim 1, it is characterized in that: described water soluble dispersing agent consumption is 0.07～0.4% of a monomer mass, its consumption of described lubricant is 0.02～0.1% of a monomer mass, described whole granula consumption is 0.05～0.5% of a monomer mass, described initiator amount is 0.03～0.07% of a monomer mass, described pH value conditioning agent consumption is 0.02～0.8% of a monomer mass, described terminator consumption is 0.05～0.5% of a monomer mass, and described defoamer consumption is 0.05～0.1% of a monomer mass.
4, according to the production method of the described mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste of claim 1, it is characterized in that: described water-soluble dispersion agent, whole granula, lubricant, oil-soluble initiator and pH value conditioning agent both can use separately, also can compoundly use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093987 CN1796424A (en) | 2004-12-21 | 2004-12-21 | Method for fabricating mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410093987 CN1796424A (en) | 2004-12-21 | 2004-12-21 | Method for fabricating mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste |
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|---|---|
| CN1796424A true CN1796424A (en) | 2006-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410093987 Pending CN1796424A (en) | 2004-12-21 | 2004-12-21 | Method for fabricating mixing resin of chloroacetic copolymerization in use for polyvinyl chloride paste |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273120A (en) * | 2014-06-19 | 2016-01-27 | 上海氯碱化工股份有限公司 | Polymerization method used for reducing vinyl chloride/vinyl acetate copolymer blending resin glass transition temperature |
| CN108611189A (en) * | 2016-12-09 | 2018-10-02 | 丰益(上海)生物技术研发中心有限公司 | The refinery practice of bisphenol-A and alkyl phenol in a kind of control grease |
-
2004
- 2004-12-21 CN CN 200410093987 patent/CN1796424A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273120A (en) * | 2014-06-19 | 2016-01-27 | 上海氯碱化工股份有限公司 | Polymerization method used for reducing vinyl chloride/vinyl acetate copolymer blending resin glass transition temperature |
| CN108611189A (en) * | 2016-12-09 | 2018-10-02 | 丰益(上海)生物技术研发中心有限公司 | The refinery practice of bisphenol-A and alkyl phenol in a kind of control grease |
| CN108611189B (en) * | 2016-12-09 | 2023-02-21 | 丰益(上海)生物技术研发中心有限公司 | Refining process for controlling bisphenol A and alkylphenol in grease |
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