CN100439407C - Polyvinyl chloride processing plasticizing modifier, its preparation method and application - Google Patents
Polyvinyl chloride processing plasticizing modifier, its preparation method and application Download PDFInfo
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- CN100439407C CN100439407C CNB2005100798188A CN200510079818A CN100439407C CN 100439407 C CN100439407 C CN 100439407C CN B2005100798188 A CNB2005100798188 A CN B2005100798188A CN 200510079818 A CN200510079818 A CN 200510079818A CN 100439407 C CN100439407 C CN 100439407C
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Abstract
The present invention relates to a polyvinyl chloride processing plasticizing modifying agent, a preparation method and an application thereof, which belongs to the field of modifying agents for processing polyvinyl chloride. The modifying agent is composed of a high molecular polymer which is copolymerized by components having the total weight of 100, the components have the proportion by weight of 0 to 100 portions of alkyl methacrylate, 0 to 40 portions of acrylic acid alkyl ester, 0 to 85 portions of styrene monomers and 0 to 35 portions of acrylonitrile monomers, and the high molecular polymer has an intrinsic viscosity which is higher than 7.5. In the preparation method, 80 to 120 portions of water by weight, the monomers of the components, surfactant and free radical initiating agents are simultaneously added in a reactor, reaction temperature is controlled from 60 to 80 DEG C under a stirring state, and the polyvinyl chloride processing plasticizing modifying agent is obtained after a reaction for 10 to 20 hours. The present invention breaking through the recognition limitation and the false recognition in industry can effectively improve the smoothness of the rheologic blocks of polyvinyl chloride and can enhance the plasticizing performance of the polyvinyl chloride. The present invention can be widely used for the modification of polyvinyl chloride plastic or composite materials containing the polyvinyl chloride.
Description
Technical field
The invention belongs to polyvinyl chloride processing and use the modified additive field, relate in particular to the particularly high molecular polymer of plasticizing capacity of a kind of effective improvement polyvinyl chloride processing characteristics.
Background technology
Polyvinyl chloride (PVC) is a kind of universal thermoplastics of excellent property, is one of plastics variety of China's output maximum.Polyvinyl chloride to shape performance relatively poor, must add the processing characteristics improving agent to improve its plasticizing processing characteristics, esters of acrylic acid processing characteristics properties-correcting agent is a kind of in three kinds of properties-correcting agent generally adopting at present of China, but the limiting viscosity of all at present esters of acrylic acid processing characteristics properties-correcting agent is generally less than 6.0.When making esters of acrylic acid polyvinyl chloride processing characteristics properties-correcting agent, the polyreaction operation is that substep or batch-wise add, and to prevent reaction aggravation under material is too much or temperature of reaction the is too high situation, causes the damage of reactor or reaction accident to take place.The PVC modified limiting viscosity of using processing aid of limiting viscosity maximum is all below 7.5 now, and the processing characteristics of the polyvinyl chloride after modification is not ideal enough.In the prior art, for existing what relation to there is no relevant record between limiting viscosity and the polyvinyl chloride processing characteristics improving agent.
Summary of the invention
The purpose of this invention is to provide a kind of limiting viscosity greater than 7.5 be used to improve the particularly properties-correcting agent and its production and application of plasticizing capacity of polyvinyl chloride processing characteristics.
The technical solution used in the present invention is as follows:
A kind of polyvinyl chloride processing plasticizing modifier is characterized in that by the total weight parts that the vinyl cyanide monomer of the styrene monomer of the alkyl methacrylate of 0-100 weight part, 0-40 parts by weight of acrylic alkyl ester, 0-85 weight part and 0-35 weight part is formed be the limiting viscosity that obtains of 100 component copolymerization greater than 7.5 and smaller or equal to 13.0 high molecular polymer.
Preferred polyvinyl chloride processing plasticizing modifier is characterized in that by the total weight parts that the vinyl cyanide monomer of the styrene monomer of the alkyl methacrylate of 0-80 weight part, 0-40 parts by weight of acrylic alkyl ester, 0-85 weight part and 0-35 weight part is formed be the limiting viscosity that obtains of 100 component copolymerization greater than 7.5 and smaller or equal to 13.0 high-molecular copolymer.
Limiting viscosity is greater than 7.5 and be that polyvinyl chloride processing plasticizing modifier is prepared by following method smaller or equal to 13.0 high molecular polymer:
Water with the 80-120 weight part, alkyl methacrylate by the 0-100 weight part, 0-40 parts by weight of acrylic alkyl ester, the total weight parts that the vinyl cyanide monomer of the styrene monomer of 0-85 weight part and 0-35 weight part is formed is 100 composition, 0.1-1.5 the tensio-active agent of weight part and 0.001-0.2 weight part radical initiator join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains polyvinyl chloride processing characteristics properties-correcting agent again.
Preferred limiting viscosity is greater than 7.5 and be that polyvinyl chloride processing plasticizing modifier is prepared by following method smaller or equal to 13.0 high molecular polymer:
Water with the 80-120 weight part, alkyl methacrylate by the 0-80 weight part, 0-40 parts by weight of acrylic alkyl ester, the total weight parts that the vinyl cyanide monomer of the styrene monomer of 0-85 weight part and 0-35 weight part is formed is 100 composition, 0.1-1.5 the tensio-active agent of weight part and 0.001-0.2 weight part radical initiator join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains polyvinyl chloride processing characteristics properties-correcting agent again.
The carbonatoms of the alkyl of described alkyl methacrylate is 1-8, as methyl methacrylate, methyl methacrylate, Jia Jibingxisuanyizhi, butyl methacrylate, methacrylic heptyl heptylate or Octyl methacrylate etc.; The carbonatoms of the alkyl of described alkyl acrylate is 2-8, as ethyl propenoate, butyl acrylate, vinylformic acid pentyl ester, vinylformic acid heptyl ester or Octyl acrylate etc.; Described styrene monomer is vinylbenzene or alpha-methyl styrene, and described vinyl cyanide monomer is vinyl cyanide or methacrylonitrile.
Described tensio-active agent is Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sodium lauryl sulphate, sodium stearate or dodecyl sulphate potassium, and described radical initiator is Potassium Persulphate or ammonium persulphate.
Described limiting viscosity is for adopting the viscosity number of determination of ubbelohde viscometer.
The application of polyvinyl chloride processing plasticizing modifier, the interpolation weight ratio that it is characterized in that this polyvinyl chloride processing plasticizing modifier is the 0.1%-2.5% of polyvinyl chloride weight.
The contriver finds in experiment, modification performance and its inherent viscosity of polyvinyl chloride processing plasticizing modifier are closely related, inherent viscosity is big more, polyvinyl chloride processing characteristics through modification is good more, and the effective means that improves the processing characteristics of polyvinyl chloride (PVC) Compound is to use the higher properties-correcting agent of limiting viscosity.But at present the limiting viscosity coefficient of employed polyvinyl chloride processing characteristics improving agent and does not recognize that limiting viscosity is obvious greater than the modified effect of 7.5 processing plasticizing modifier all less than 7.5 in the industry.
The contriver chances on polyvinyl chloride processing characteristics properties-correcting agent in experiment and research limiting viscosity is subjected to the influence of polymeric reaction condition of properties-correcting agent very big, particularly the feed way of the compositing monomer of multipolymer, reaction times and temperature of reaction.The disposable reinforced limiting viscosity maximum that obtains polymkeric substance, reinforced number of times is many more, and viscosity is more little; Control reaction temperature is low more, and its limiting viscosity is big more; Temperature of reaction is low more, and the reaction times is long more, and then limiting viscosity is big more.Carry out polyreaction with the monomer of above-mentioned composition proportioning or monomer mixture and tensio-active agent, the disposable input simultaneously of initiator, meet under the condition of above-mentioned requirements at controlled temperature and reaction times, can obtain the limiting viscosity coefficient greater than 7.5 modifier polymer.But those skilled in the art generally believes that this polyreaction is thermopositive reaction, and speed of response is aggravated along with increasing of temperature of reaction, must react feed rate and temperature of reaction by strict controlled polymerization, prevent that sudden and violent poly-reaction is with the safe operation of assurance polymerization reactor and operator's personnel safety, prevent the generation of accident, therefore can not disposable various materials be joined in the reactor.If all materials of disposable adding not only can not get polymkeric substance, but also can cause danger.The contriver has overcome those skilled in the art understanding defective, with the disposable input reactor of all monomer components, under the radiating rate situation of accelerating reactor, can control whole polymeric reaction temperature and make it meet reaction conditions, obtain limiting viscosity greater than 7.5 polyvinyl chloride processing plasticizing modifier.
The method that the present invention measures limiting viscosity is: earlier processing plasticizing modifier is put into 65 ℃ of thermostat containers and keep 10h, cooling back with ten thousand/ the accurate weighing 0.075g of balance put into the 25ml volumetric flask, the trichloromethane that adds then about 20 milliliters makes it dissolving, placed 24 hours, after treating all dissolvings, put into 25 ± 0.1 ℃ Water Tank with Temp.-controlled, constant temperature 15min, be diluted to the 25ml scale with trichloromethane again, to be determined with No. 3 sand core funnels filtration backs, measure its viscosity with dark type viscometer then, measure the viscosity of trichloromethane simultaneously.
Method of calculation:
η
r＝t/t
0 η
sp＝η
r-1
T is that modifier solution is flowed through the time capillaceous t in the formula
0Be that the solvent trichloromethane is flowed through the same time capillaceous, c is the concentration (g/100ml) of solution
η
rBe relative viscosity, η
SpBe specific viscosity, η is a limiting viscosity.
Beneficial effect of the present invention is, the contriver has broken through understanding limitation and the mistaken ideas in the industry field, adopt that monomer component is simple, limiting viscosity greater than 7.5 high molecular polymer as improve the polyvinyl chloride soffening can properties-correcting agent and the preparation method of this properties-correcting agent is provided, this properties-correcting agent can effectively improve the smooth finish of polyvinyl chloride rheology piece, improves the plasticizing capacity of polyvinyl chloride.This properties-correcting agent can be widely used in igelite or contain the improvement of the processing characteristics of polyvinyl chloride composite materials.
Embodiment
The present invention is further illustrated to use specific embodiment and comparative example below, and embodiment 1 and comparative example 1-2 adopt same monomer component to form, and controls identical reaction times and temperature to increase the comparability of test-results.But the present invention is not limited to these embodiment.
Embodiment 1 is with the methyl methacrylate of the water of 100 weight parts, 90 weight parts, 10 parts by weight of acrylic butyl esters, the sodium lauryl sulphate of 1.1 weight parts, the disposable reactor of putting into of Potassium Persulphate of 0.01 weight part, under 200 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 15 hours, obtain the emulsion of acrylate copolymer, obtain limiting viscosity after the drying and be 12 acrylic acid esters co-polymer.
Embodiment 2 is with the water of 120 weight parts, methyl methacrylate, 10 parts by weight of acrylic butyl esters, the sodium lauryl sulphate of 1.1 weight parts, the Potassium Persulphate of 0.01 weight part and the disposable reactor of putting into of lauryl mercaptan of 0.01 weight part of 90 weight parts, under 200 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 15 hours, obtain the emulsion of acrylate copolymer, obtain limiting viscosity after the drying and be 9.0 acrylic acid esters co-polymer.
Embodiment 3 is with embodiment 2, and just the consumption of lauryl mercaptan is 0.02 weight part, obtains limiting viscosity and be 7.5 acrylic acid esters co-polymer.
Comparative example 1 is with embodiment 1, just join the methyl methacrylate of 90 weight parts and the mixture of 10 parts by weight of acrylic butyl esters in the reactor at twice, the order that adds is react the adding second endorsement body afterwards at first body, obtains limiting viscosity and be 6.0 acrylate copolymer.
Comparative example 2 is with embodiment 1, just the mixture of the methyl methacrylate of 90 weight parts and 10 parts by weight of acrylic butyl esters is divided and join in the reactor for three times, the order that adds is to have reacted the back at first body to add the second endorsement body, and the 3rd batch adds after second batch reaction is finished.Obtain limiting viscosity and be 5.2 acrylate copolymer.
Test and appraisal to polyvinyl chloride processing characteristics after the modification: can pass through the highest moment of torsion and balancing torque that RM-200 torque rheometer (manufacturing of Haast company of Harbin University of Science and Technology) is measured the polyvinyl chloride after the processing plasticizing modifier modification of different qualities viscosity, with the difference of processing plasticizing performance relatively, the highest moment of torsion the and processing characteristics of the polyvinyl chloride of high balancing torque is best.The condition of test and appraisal is rotor speed 35rpm, 165 ℃ of design temperatures.Estimating the weight part prescription is: 100 parts of polyvinyl chloride, 5 parts in lime carbonate, 3 parts of disalts, cured 0.15 part of chlorinatedpolyethylene, 0.2 part of stearic acid, 9 parts of chlorinatedpolyethylenees, 2 parts of processing plasticizing modifiers provided by the invention, 0.7 part of calcium stearate, 1.5 parts of lead stearates.
With the polyvinyl chloride of RM-200 torque rheometer test through the above-mentioned prescription of the processing plasticizing modifier modification of various different qualities viscosity, its comparing result sees Table 1.
Table 1 processing plasticizing modifier influences the contrast of situation to polyvinyl chloride rheology piece smooth finish
The expression of polyvinyl chloride rheology piece smooth finish relation is as follows in the table:
Limiting viscosity is big more as can be seen from Table 1, and the polyvinyl chloride balancing torque after the modification is high more high more with moment of torsion, and the smooth finish of rheology piece is good more, thereby the plasticizing effect of the polyvinyl chloride after the proof modification is good more.If it is in reaction, add the inherent viscosity that end-capping reagent also can influence prepared plasticizing modifier, but the modified effect of plasticizing modifier is only relevant with the size of its inherent viscosity, irrelevant with other factor that influences the polymerizable molecular amount.
Embodiment 4 is with the water of 80 weight parts, 40 parts by weight of acrylic propyl ester, the styrene monomer of 25 weight parts, the acrylonitrile monemer of 35 weight parts, the Sodium dodecylbenzene sulfonate of 0.1 weight part, the disposable reactor of putting into of Potassium Persulphate of 0.1 weight part, under 500 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 80 ℃ reaction 20 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 11.0 high-molecular copolymer.
Embodiment 5 is with the butyl methacrylate of the water of 100 weight parts, 10 weight parts, 5 parts by weight of acrylic pentyl esters, the styrene monomer of 85 weight parts, the dodecyl sulphate potassium of 1.5 weight parts, the disposable reactor of putting into of ammonium persulphate of 0.2 weight part, under 50 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 10 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 12.5 acrylic acid esters co-polymer.
Embodiment 6 is with the water of 110 weight parts, the methacrylic acid pentyl ester of 40 weight parts, the α-Jia Jibenyixidanti of 30 weight parts, the methacrylic nitrile monomer of 30 weight parts, the sodium laurylsulfonate of 1.0 weight parts, the disposable reactor of putting into of Potassium Persulphate of 0.001 weight part, under 300 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 80 ℃ reaction 15 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 11.5 high-molecular copolymer.
The plasticizing modifier that obtains with embodiment 4,5 and 6 carries out modified test to polyvinyl chloride, test recipe and plasticizing assessment method are with embodiment 1 and 2, test-results shows, the plasticizing modifier that inherent viscosity is big more improves obvious more to the plasticity of polyvinyl chloride, the result of use optimum of the plasticizing modifier that embodiment 5 provides, the modified effect of the plasticizing modifier that embodiment 4 provides is lower than the plasticizing modifier that embodiment 6 provides slightly, but the modified effect of above-mentioned three kinds of plasticizing modifiers is all apparently higher than the modified effect that has properties-correcting agent now.
Embodiment 7 is with the Octyl methacrylate of the water of 120 weight parts, 20 weight parts, 40 parts by weight of acrylic monooctyl esters, the styrene monomer of 5 weight parts, the acrylonitrile monemer of 35 weight parts, the sodium stearate of 1.2 weight parts, the disposable reactor of putting into of Potassium Persulphate of 0.05 weight part, under 100 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 70 ℃ reaction 10 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 12.0 acrylic acid esters co-polymer.
Embodiment 8 is with the water of 80 weight parts, the methacrylic heptyl heptylate, 1 of 100 weight parts, the disposable reactor of putting into of the Potassium Persulphate of the Sodium dodecylbenzene sulfonate of 5 weight parts, 0.005 weight part, under 400 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 20 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 12.5 acrylic polymer.
Embodiment 9 is with the water of 90 weight parts, the own ester of 30 parts by weight of acrylic, the styrene monomer of 70 weight parts, the sodium stearate of 0.2 weight part, the disposable reactor of putting into of ammonium persulphate of 0.2 weight part, under 50 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 80 ℃ reaction 18 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 10.5 acrylic acid esters co-polymer.
Embodiment 10 is with the water of 100 weight parts, the N-Hexyl methacrylate of 80 weight parts, the methacrylic nitrile monomer of 20 weight parts, the sodium lauryl sulphate of 1.0 weight parts, the disposable reactor of putting into of Potassium Persulphate of 0.2 weight part, under 240 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 10 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 13.0 acrylic acid esters co-polymer.
Embodiment 11 is with the water of 120 weight parts, the alpha-methyl styrene of 80 weight parts, the acrylonitrile monemer of 20 weight parts, the dodecyl sulphate potassium of 0.1 weight part, the disposable reactor of putting into of Potassium Persulphate of 0.001 weight part, under 120 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 80 ℃ reaction 15 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 11.2 acrylic acid esters co-polymer.
Embodiment 12 is with the Jia Jibingxisuanyizhi of the water of 80 weight parts, 50 weight parts, 10 parts by weight of acrylic heptyl esters, the styrene monomer of 20 weight parts, the methacrylic nitrile monomer of 20 weight parts, the sodium stearate of 1.2 weight parts, the disposable reactor of putting into of Potassium Persulphate of 0.05 weight part, under 100 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 70 ℃ reaction 16 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 11.8 acrylic acid esters co-polymer.
Embodiment 13 is with the propyl methacrylate of the water of 120 weight parts, 60 weight parts, 10 parts by weight of acrylic monooctyl esters, the styrene monomer of 10 weight parts, the methacrylic nitrile monomer of 20 weight parts, the sodium laurylsulfonate of 0.5 weight part, the disposable reactor of putting into of ammonium persulphate of 0.15 weight part, under 200 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 15 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 10.8 acrylic acid esters co-polymer.
Embodiment 14 is with the butyl methacrylate of the water of 100 weight parts, 80 weight parts, 5 parts by weight of acrylic pentyl esters, the α-Jia Jibenyixidanti of 5 weight parts, the acrylonitrile monemer of 10 weight parts, the dodecyl sulphate potassium of 1.5 weight parts, the disposable reactor of putting into of ammonium persulphate of 0.2 weight part, under 50 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 60 ℃ reaction 10 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 10.5 acrylic acid esters co-polymer.
Embodiment 15 is with the water of 100 weight parts, the methyl methacrylate of 80 weight parts, the styrene monomer of 20 weight parts, the sodium laurylsulfonate of 0.4 weight part, the disposable reactor of putting into of Potassium Persulphate of 0.001 weight part, under 500 rev/mins mixing speed, be warming up to 50 ℃, and temperature remained on below 80 ℃ reaction 20 hours, obtain the emulsion of multipolymer, obtain limiting viscosity after the drying and be 12.0 acrylic acid esters co-polymer.
Claims (10)
1. polyvinyl chloride processing plasticizing modifier is characterized in that total weight parts that it is made up of the vinyl cyanide monomer of the styrene monomer of the alkyl methacrylate of 0-100 weight part, 0-40 parts by weight of acrylic alkyl ester, 0-85 weight part and 0-35 weight part is the limiting viscosity that obtains of 100 component copolymerization greater than 7.5 and smaller or equal to 13.0 high molecular polymer.
2. polyvinyl chloride processing plasticizing modifier according to claim 1, it is characterized in that described alkyl methacrylate is the 0-80 weight part, described alkyl acrylate is the 0-40 weight part, described styrene monomer is the 0-85 weight part, and described vinyl cyanide monomer is the 0-35 weight part.
3. the described polyvinyl chloride processing plasticizing modifier of claim 1 is characterized in that limiting viscosity is greater than 7.5 and prepared by following method smaller or equal to 13.0 high molecular polymer:
Water with the 80-120 weight part, alkyl methacrylate by the 0-100 weight part, 0-40 parts by weight of acrylic alkyl ester, the total weight parts that the vinyl cyanide monomer of the styrene monomer of 0-85 weight part and 0-35 weight part is formed is 100 composition, 0.1-1.5 the tensio-active agent of weight part and 0.001-0.2 weight part radical initiator join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains this high molecular polymer again.
4. the described polyvinyl chloride processing plasticizing modifier of claim 2 is characterized in that limiting viscosity is greater than 7.5 and prepared by following method smaller or equal to 13.0 high molecular polymer:
Water with the 80-120 weight part, alkyl methacrylate by the 0-80 weight part, 0-40 parts by weight of acrylic alkyl ester, the total weight parts that the vinyl cyanide monomer of the styrene monomer of 0-85 weight part and 0-35 weight part is formed is 100 composition, 0.1-1.5 the tensio-active agent of weight part and 0.001-0.2 weight part radical initiator join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains this high molecular polymer again.
5. polyvinyl chloride processing plasticizing modifier according to claim 1 and 2, the carbonatoms that it is characterized in that the alkyl of described alkyl methacrylate is 1-8, the carbonatoms of the alkyl of described alkyl acrylate is 2-8, described styrene monomer is vinylbenzene or alpha-methyl styrene, and described vinyl cyanide monomer is vinyl cyanide or methacrylonitrile.
6. according to claim 3 or 4 described polyvinyl chloride processing plasticizing modifiers, it is characterized in that described tensio-active agent is Sodium dodecylbenzene sulfonate, sodium laurylsulfonate, sodium lauryl sulphate, sodium stearate or dodecyl sulphate potassium, described radical initiator is Potassium Persulphate or ammonium persulphate.
7. polyvinyl chloride processing plasticizing improving agent according to claim 1 and 2 is characterized in that described limiting viscosity is for adopting the viscosity number of determination of ubbelohde viscometer.
8. the preparation method of the described polyvinyl chloride processing plasticizing improving agent of claim 1 is characterized in that:
The total weight parts that the vinyl cyanide monomer of the water of 80-120 weight part, the styrene monomer of alkyl methacrylate, 0-40 parts by weight of acrylic alkyl ester, 0-85 weight part by the 0-100 weight part and 0-35 weight part is formed is that 100 composition, the tensio-active agent and the 0.001-0.2 weight part radical initiator of 0.1-1.5 weight part join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains again.
9. the preparation method of the described polyvinyl chloride processing plasticizing improving agent of claim 2 is characterized in that:
The total weight parts that the vinyl cyanide monomer of the water of 80-120 weight part, the styrene monomer of alkyl methacrylate, 0-40 parts by weight of acrylic alkyl ester, 0-85 weight part by the 0-80 weight part and 0-35 weight part is formed is that 100 composition, the tensio-active agent and the 0.001-0.2 weight part radical initiator of 0.1-1.5 weight part join in the reactor simultaneously, under 50-500 rev/min stirring velocity, be warming up to 50 ℃, temperature of reaction is controlled at 60 ℃ below-80 ℃, reacted 10-20 hour, obtain polymer emulsion, drying obtains again.
10. the application of claim 1 or 2 described polyvinyl chloride processing plasticizing modifiers, the interpolation weight ratio that it is characterized in that this polyvinyl chloride processing plasticizing modifier is the 0.1%-2.5% of polyvinyl chloride weight.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833686A (en) * | 1969-10-09 | 1974-09-03 | Rohm & Haas | Sequentially produced alkyl acrylate polymers blended with poly(vinyl halides) |
| US4983760A (en) * | 1989-01-27 | 1991-01-08 | Basf Aktiengesellschaft | Low molecular weight polymers of acrylic esters |
| CN1275146A (en) * | 1998-08-28 | 2000-11-29 | 钟渊化学工业株式会社 | Processing aid for vinyl chloride resin and vinyl chloride resin composition containing the same |
| CN1552949A (en) * | 2003-05-27 | 2004-12-08 | 江西省恒润实业发展有限公司 | Manufacture of foamed Fe-Ni-Cr-Co alloy |
| CN1576311A (en) * | 2003-07-24 | 2005-02-09 | 赵东日 | Polyvinyl chloride propenoic acid esters impact modifier |
-
2005
- 2005-06-29 CN CNB2005100798188A patent/CN100439407C/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3833686A (en) * | 1969-10-09 | 1974-09-03 | Rohm & Haas | Sequentially produced alkyl acrylate polymers blended with poly(vinyl halides) |
| US4983760A (en) * | 1989-01-27 | 1991-01-08 | Basf Aktiengesellschaft | Low molecular weight polymers of acrylic esters |
| CN1275146A (en) * | 1998-08-28 | 2000-11-29 | 钟渊化学工业株式会社 | Processing aid for vinyl chloride resin and vinyl chloride resin composition containing the same |
| CN1552949A (en) * | 2003-05-27 | 2004-12-08 | 江西省恒润实业发展有限公司 | Manufacture of foamed Fe-Ni-Cr-Co alloy |
| CN1576311A (en) * | 2003-07-24 | 2005-02-09 | 赵东日 | Polyvinyl chloride propenoic acid esters impact modifier |
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