CN102295725B - Method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin - Google Patents
Method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin Download PDFInfo
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- CN102295725B CN102295725B CN 201110135924 CN201110135924A CN102295725B CN 102295725 B CN102295725 B CN 102295725B CN 201110135924 CN201110135924 CN 201110135924 CN 201110135924 A CN201110135924 A CN 201110135924A CN 102295725 B CN102295725 B CN 102295725B
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- hydroxypropyl acrylate
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Abstract
The invention relates to a method for preparing a soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin, specifically a water suspending method for preparing the soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin, and more specifically a water suspending method for preparing a car and wood ware surface paint. The soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin is prepared from raw materials of vinyl chloride, vinyl acetate, hydroxypropyl acrylate a suspending agent, a chain regulator, an initiator, deionized water, and the like. The resin is prepared through steps of copolymerizing, dehydrating, blow-drying, sieving, and the like. With the soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin prepared with the method, production efficiency can be improved, production cost can be reduced, and pollution to the atmosphere can be avoided.
Description
Technical field
The present invention relates to a kind of production process of resin, specifically, is to adopt water suspension method to produce the method for soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.More specifically, be to adopt water suspension method to produce the method for car, woodenware topcoating.
Background technology
At present, the coating (i.e. paint) that is used in car, woodenware surface all is the vinyl chloride-vinyl acetate that adopts solvent method to make-Propylene glycol monoacrylate copolymer resins.This vinyl chloride-vinyl acetate-Propylene glycol monoacrylate copolymer resins is that the raw materials such as vinylchlorid, vinyl acetate between to for plastic, Propylene glycol monoacrylate, solvent, initiator are dropped in the reactor, heats when stirring, and carries out copolyreaction.Reaction finishes, and adds an amount of methyl alcohol again, and carries out high-speed stirring, makes copolymer resins become solid particulate by liquid crystalization.Afterwards, through press filtration, drying, the filtrate of wherein crossing is reclaimed through rectifying.Raffinate after the rectifying adopts incinerating method to process.Although adopt solvent method can obtain vinyl chloride-vinyl acetate-Propylene glycol monoacrylate copolymer resins, owing to containing solvent in its raw material, filtrate needs rectifying to reclaim, and the recovery technical process is longer, and production efficiency is low.Because recovery needs recovery system, and facility investment is many, production cost is higher again.On the other hand, because the raffinate after the rectifying need carry out burning disposal, can pollute atmosphere.
Summary of the invention
The problem to be solved in the present invention provides a kind of method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.Adopt this method to prepare soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin, not only can enhance productivity, reduce production costs, and can avoid atmosphere is polluted.
For addressing the above problem, take following technical scheme:
The method characteristic of preparation soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin of the present invention is to may further comprise the steps successively:
(1) choose the raw material of following parts by weight:
60～75 parts in vinylchlorid; 5～10 parts of vinyl acetate between to for plastics; 15～30 parts of Propylene glycol monoacrylates; 3～5 parts of suspension agents; 30～40 parts of chain regulators; 0.3～0.5 part of initiator; 150～200 parts of deionized waters.Wherein, suspension agent is that vinyl pyrrolidone and methylcellulose gum connect branched copolymer, and chain regulator is any one in methyl alcohol, ethanol, propyl alcohol and the butanols, and initiator is Diisopropyl azodicarboxylate;
(2) above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half vinylchlorid are dropped in the reactor, when stirring, heat; After being down to 0.2Mpa when heating to 70～75 ℃, reaction pressure, in 7～10 hours, slowly adding half remaining vinylchlorid, and continue to stir copolyreaction 13～15 hours;
(3) dewater;
(4) with 115～125 ℃ hot blast drying;
(5) with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
Adopt such scheme, have the following advantages:
Can be found out by such scheme, because the present invention is with raw materials such as vinylchlorid, vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator and deionized waters, make through steps such as stirring, heat, react, dewater, dry up and sieve, need not any chemical solvents, avoided the recovery of solvent, thereby shortened technical process, improved production efficiency.Because technical process is short, the equipment that needs is few, can reduce facility investment, reduce production costs again.On the other hand, owing to not containing chemical solvents in the raw material, do not need rectifying to reclaim, avoided burning the pollution that raffinate brings atmosphere.
Embodiment
The present invention will be further described below in conjunction with embodiment:
Embodiment one
Choose first the vinylchlorid of 60 weight parts, the vinyl acetate between to for plastic of 10 weight parts, the Propylene glycol monoacrylate of 30 weight parts, the suspension agent of 3 weight parts, the chain regulator of 40 weight parts, the initiator of 0.5 weight part and 200 parts deionized water, stand-by.Wherein, suspension agent is that vinyl pyrrolidone and methylcellulose gum connect branched copolymer, and chain regulator is methyl alcohol, and initiator is Diisopropyl azodicarboxylate.
Vinylchlorid with above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half weight drops in the reactor again, heats when stirring.After being down to 0.2Mpa when heating to 70 ℃, reaction pressure, in 10 hours, slowly adding the vinylchlorid of half remaining weight, and continue to stir copolyreaction 15 hours.
Afterwards, dewater with whizzer, obtain the work in-process resin of moisture 20 % by weight.The water polymerizable of deviating from recycles.
Again, with 115 ℃ hot blasts the work in-process resin is dried up.
At last, with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
Embodiment two
Choose first the vinylchlorid of 70 weight parts, the vinyl acetate between to for plastic of 8 weight parts, the Propylene glycol monoacrylate of 25 weight parts, the suspension agent of 4 weight parts, the chain regulator of 35 weight parts, the initiator of 0.4 weight part and 180 parts deionized water, stand-by.Wherein, suspension agent is that vinyl pyrrolidone and methylcellulose gum connect branched copolymer, and chain regulator is ethanol, and initiator is Diisopropyl azodicarboxylate.
Vinylchlorid with above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half weight drops in the reactor again, heats when stirring.After being down to 0.2Mpa when heating to 73 ℃, reaction pressure, in 8 hours, slowly adding the vinylchlorid of half remaining weight, and continue to stir copolyreaction 14 hours.
Afterwards, dewater with whizzer, obtain the work in-process resin of moisture 20 % by weight.The water polymerizable of deviating from recycles.
Again, with 120 ℃ hot blasts the work in-process resin is dried up.
At last, with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
Embodiment three
Choose first the vinylchlorid of 75 weight parts, the vinyl acetate between to for plastic of 5 weight parts, the Propylene glycol monoacrylate of 15 weight parts, the suspension agent of 5 weight parts, the chain regulator of 30 weight parts, the initiator of 0.3 weight part and 150 parts deionized water, stand-by.Wherein, suspension agent is that vinyl pyrrolidone and methylcellulose gum connect branched copolymer, and chain regulator is propyl alcohol, and initiator is Diisopropyl azodicarboxylate.
Vinylchlorid with above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half weight drops in the reactor again, heats when stirring.After being down to 0.2Mpa when heating to 75 ℃, reaction pressure, in 7 hours, slowly adding the vinylchlorid of half remaining weight, and continue to stir copolyreaction 13 hours.
Afterwards, dewater with whizzer, obtain the work in-process resin of moisture 20 % by weight.The water polymerizable of deviating from recycles.
Again, with 125 ℃ hot blasts the work in-process resin is dried up.
At last, with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
Embodiment four
Choose first the vinylchlorid of 75 weight parts, the vinyl acetate between to for plastic of 5 weight parts, the Propylene glycol monoacrylate of 15 weight parts, the suspension agent of 5 weight parts, the chain regulator of 30 weight parts, the initiator of 0.3 weight part and 150 parts deionized water, stand-by.Wherein, suspension agent is that vinyl pyrrolidone and methylcellulose gum connect branched copolymer, and chain regulator is butanols, and initiator is Diisopropyl azodicarboxylate.
Vinylchlorid with above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half weight drops in the reactor again, heats when stirring.After being down to 0.2Mpa when heating to 75 ℃, reaction pressure, in 7 hours, slowly adding the vinylchlorid of half remaining weight, and continue to stir copolyreaction 13 hours.
Afterwards, dewater with whizzer, obtain the work in-process resin of moisture 20 % by weight.The water polymerizable of deviating from recycles.
Again, with 125 ℃ hot blasts the work in-process resin is dried up.
At last, with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
Claims (1)
1. method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin is characterized in that may further comprise the steps successively:
(1) choose the raw material of following parts by weight:
60～75 parts in vinylchlorid;
5～10 parts of vinyl acetate between to for plastics;
15～30 parts of Propylene glycol monoacrylates;
3～5 parts of suspension agents;
30～40 parts of chain regulators;
0.3～0.5 part of initiator;
150～200 parts of deionized waters;
Wherein, suspension agent is vinyl pyrrolidone and methylcellulose gum graft copolymer, and chain regulator is any one in methyl alcohol, ethanol, propyl alcohol and the butanols, and initiator is Diisopropyl azodicarboxylate;
(2) above-mentioned vinyl acetate between to for plastic, Propylene glycol monoacrylate, suspension agent, chain regulator, initiator, deionized water and half vinylchlorid are dropped in the reactor, when stirring, heat; After being down to 0.2MPa when heating to 70～75 ℃, reaction pressure, in 7～10 hours, slowly adding half remaining vinylchlorid, and continue to stir copolyreaction 13～15 hours;
(3) dewater;
(4) with 115～125 ℃ hot blast drying;
(5) with 40 purpose sieve, obtain soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin.
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| CN 201110135924 CN102295725B (en) | 2011-05-17 | 2011-05-17 | Method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin |
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| CN 201110135924 CN102295725B (en) | 2011-05-17 | 2011-05-17 | Method for preparing soluble vinyl chloride-vinyl acetate-hydroxypropyl acrylate copolymer resin |
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| CN102295725B true CN102295725B (en) | 2013-04-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102977252B (en) * | 2012-12-03 | 2015-04-29 | 无锡洪汇新材料科技股份有限公司 | Preparation method of MMA-BMA-MAA (methyl methacrylate-n-butyl methacrylate-methacrylic acid) ternary copolymer resin |
| CN103333281B (en) * | 2013-06-20 | 2015-07-15 | 无锡洪汇新材料科技股份有限公司 | Resin for blood transfusion tube/transfusion bag and preparation method thereof |
| CN109705675A (en) * | 2018-12-28 | 2019-05-03 | 东来涂料技术（上海）股份有限公司 | A kind of polyolefin material paint composite of chemical-resistant resistance and preparation method thereof |
| CN113321759A (en) * | 2021-06-10 | 2021-08-31 | 泰州市正大化工有限公司 | Preparation method of low-viscosity vinyl chloride-vinyl acetate copolymer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264861A2 (en) * | 1986-10-24 | 1988-04-27 | Air Products And Chemicals, Inc. | Process for producing suspension polyvinyl chloride for powder coating applications |
| CN101338003A (en) * | 2008-08-12 | 2009-01-07 | 上海氯碱化工股份有限公司 | Method for preparing carboxylic acid-modified vinyl chloride-vinyl acetate copolymer resins |
| CN101402701A (en) * | 2008-10-22 | 2009-04-08 | 无锡市洪汇化工有限公司 | Method for preparing chloroethylene-vinyl acetate-maleic acid copolymerized resin |
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2011
- 2011-05-17 CN CN 201110135924 patent/CN102295725B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0264861A2 (en) * | 1986-10-24 | 1988-04-27 | Air Products And Chemicals, Inc. | Process for producing suspension polyvinyl chloride for powder coating applications |
| CN101338003A (en) * | 2008-08-12 | 2009-01-07 | 上海氯碱化工股份有限公司 | Method for preparing carboxylic acid-modified vinyl chloride-vinyl acetate copolymer resins |
| CN101402701A (en) * | 2008-10-22 | 2009-04-08 | 无锡市洪汇化工有限公司 | Method for preparing chloroethylene-vinyl acetate-maleic acid copolymerized resin |
Non-Patent Citations (2)
| Title |
|---|
| 氯乙烯/丙烯酸酯二元及多元共聚物的研究进展;谢雷;《聚氯乙烯》;20080930;第36卷(第9期);第1-6页 * |
| 谢雷.氯乙烯/丙烯酸酯二元及多元共聚物的研究进展.《聚氯乙烯》.2008,第36卷(第9期),第1-6页. |
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