CN1350008A - Modified polyvinyl acetate emulsion - Google Patents
Modified polyvinyl acetate emulsion Download PDFInfo
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- CN1350008A CN1350008A CN 00119047 CN00119047A CN1350008A CN 1350008 A CN1350008 A CN 1350008A CN 00119047 CN00119047 CN 00119047 CN 00119047 A CN00119047 A CN 00119047A CN 1350008 A CN1350008 A CN 1350008A
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- acetate emulsion
- polyvinyl acetate
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Abstract
The present invention relates to a modified polyvinyl acetate emulsion, and its composition contains (by weight portion) 500-700 portions of water, 0.5-5 portions of borax or boric acid, 25-60 portions of starch, 50-90 portions of polyvinyl alcohol, 2-8 portions of complexing agent, 6-30 portions of hydrochloric acid 20-50 portions of formaldehyde, 0.5-2 portions of acetic acid, 5-10 portions of pH regulating agent, 50-200 portions of filling material, 2-4 protions of nonyl polyethenoxy ether, 1-3 portions of ammonium persulfate, 52-306 portions of monomer, small quantity of cupric sulfate and methyl alcohol and 5-30 portions of plasticizer. Said materials are placed in a container, undergone the processes of dissolving, modifying, cross-linking, complexing, condensatino and polymerization to obtain the invented product. It is can be extensively used for making furnitures and paper products.
Description
The present invention relates to a kind of modified polyvinyl acetate emulsion, relate to a kind of poly-acetate emulsion product of multi-usage modification that in furniture making, paper product, plays adhesive effect specifically.
The vinyl acetate between to for plastic structural formula
Because it has the two keys of C=C on molecular structural formula, chemical property is more active, industrial generally with vinyl acetate between to for plastic and polyvinyl alcohol, add emulsifying agent, polymerization generates polyvinyl acetate emulsion, but because common polyvinyl acetate emulsion is at raw materials cost, problem such as rate of drying and tack is difficult to the requirement that is applicable to that some are different, for addressing these problems, generally adds not filler and starch by chemical reaction again after a polymerization.Because the proportion difference between the raw material, therefore the material difference exists a shortcoming, and promptly stability can not get ensureing, so in using, be no more than three months layering just takes place, precipitation, mouldy.
Therefore an urgent demand up to now improves the prescription of polyvinyl acetate emulsion, and has proposed the method that addresses this problem.
For example: the flat 5-78541A of Japanese Patent discloses a kind of aqueous polyvinyl acetate emulsion synthetics; it is copolymer with iso-butylene and maleic anhydride; perhaps its derivative and polyvinyl alcohol are as protection glue; superoxide carries out the aqueous polyvinyl acetate emulsion product formed after the letex polymerization as polymerization initiator and Vinyl Acetate Monomer; described this product has new protection glue, remaining monomer characteristics seldom; has film formation at low temp; low-temperature fluidity, but do not solve the problem of the stability of this product fully.
The flat 5-125341A of another Japanese Patent discloses a kind of paper tube caking agent synthetics, the Vinyl Acetate Copolymer lipid emulsion that after polymerization, generates, adding filling agent, poly-acetate alcohol, boric acid mix, make the tunicle of this tackiness agent have higher modulus of elasticity, but, still there is not to solve the stability of this product because this product belongs to composite character and easily precipitates at all.
The object of the present invention is to provide the modified polyvinyl acetate emulsion of the cheap but also good stability of a kind of not only cost.
The present invention has well simultaneously to carry out crosslinked by linking agent starch, superpolymer, filler in same equipment; carry out complexing, carry out a series of extensive and meticulous researchs such as the last repolymerization of condensation reaction again with complexing agent again; the result shows: compare with aforesaid prescription; the present invention has been found that; when the protective colloid that contains mass filler is introduced the material of several special components such as borax or boric acid, zinc oxide or zinc chloride, hydrochloric acid, formaldehyde is effectively to achieving the above object, be successful based on the present invention of this discovery.
In other words, according to the modified polyvinyl acetate emulsion product that the invention provides a high stability, it is specifically composed as follows:
A proportioning raw materials (weight meter) base-material part
A water: 500-70 part
B linking agent: borax (molecular formula Na
2B
4O
710H
2O) or boric acid (molecular formula H
3BO
3) 0.5-5 part
C protects glue: W-Gum or wheat starch, 25-60 part polyvinyl alcohol (structural formula
) 50-90 part
D complexing agent: zinc oxide (ZnO), zinc chloride (ZnCl
2) 2-8 part
PH conditioning agent: hydrochloric acid (HCl) oxalic acid (structural formula
) phosphoric acid (H
3PO
4) 6-30 part
E formaldehyde (HCHO) 20-50 part
F catalyzer: acetic acid (CH
3COOH) 0.5-2 part
G filler: talcum powder, kaolin, process white 50-200 part
H PH conditioning agent: sodium hydroxide (NaOH) 5-10 part
Illustrate: wherein formaldehyde with the protection glue [OH]
-Condensation is to improve intensity, antifreeze and water resistance.
The B polymeric part
A emulsifying agent: nonyl Soxylat A 25-7 (OP-10) 2-4 part
B initiator: ammonium persulphate (NH
4S
2O
8) 1-3 part
C monomer: vinyl acetate between to for plastic (CH
3COOCHCH
2) 50-300 part
Vinylformic acid 2-6 part
D other: copper sulfate (CuSO
4) or methyl alcohol (CH
3OH) a small amount of
E softening agent: dibutyl phthalate
5-30 part
By adopting mineral filler, plant amylum, and macromolecular material, chemical reactions such as soluble modified in same container, crosslinked, complexing, condensation, polymerization generate a kind of novel existing reticulated structure, and the nascent polyketide compound of the high stability of core-shell structure is arranged again.
Now the invention will be further described in conjunction with the embodiments:
Embodiment 1
700 parts in water, kaolin, talcum powder, barium sulfate mix or are single with 50 parts of 200 parts, wheat starch or W-Gums, 4 parts of borax or boric acid, 23 parts of hydrochloric acid, 5 parts of 40 parts in formaldehyde, zinc oxide or zinc chloride, 90 parts of polyvinyl alcohol, 5 parts in hydrochlorinate sodium, 2.5 parts of nonyl Soxylat A 25-7s, 3 parts of ammonium persulphates, 50 parts of vinyl acetate between to for plastics, 5 parts of dibutyl phthalates, the copper sulfate trace, the methyl alcohol trace.
The solid content of this product: 30 ± 2% appearance milky whites, viscosity＞8000CP (30 ℃ of rotational viscosimeters), stability: normal temperature, storage keep good more than 1 year.
Embodiment 2
600 parts in water, kaolin or talcum powder 50-100 part, 40 parts of starch, 2.5 parts of borax or boric acid, 60 parts of polyvinyl alcohol, 22 parts of hydrochloric acid, 5 parts in zinc oxide, 24 parts in formaldehyde, 5 parts in sodium hydroxide, 3 parts of nonyl Soxylat A 25-7s, 2.5 parts of ammonium persulphates, 300 parts on acetic acid second zinc, 30 parts of dibutyl phthalates, copper sulfate trace, methyl alcohol trace, zinc oxide or zinc chloride 4-5 part.
Solid content 40 ± 2% viscosity＞8000CP (30 ℃ of rotational viscosimeters) stability: normal temperature, storage kept good in 1 year.
Embodiment 3
500 parts in water, 50 parts of kaolin, 25 parts of wheat starch or W-Gums, 50 parts of polyvinyl alcohol, 22 parts of hydrochloric acid, 12 parts in formaldehyde, 4 parts in zinc oxide, 2.5 parts of boraxs, 5 parts in sodium hydroxide, 3 parts of nonyl Soxylat A 25-7s, 1.5 parts of ammonium persulphates, 350 parts of vinyl acetate between to for plastics, 40 parts of dibutyl phthalates, the copper sulfate trace, the methyl alcohol trace.
Because of content 50% ± 2 viscosity＞8000CP (30 ℃ of rotational viscosimeters) stability: normal temperature, store and keep good more than 1 year.
Above raw material is all buied from the light company of Jiangsu Province's Suzhou Cityization.
For finishing described embodiment, production process of the present invention is as follows: the first step: dissolving
Water, starch, polyvinyl alcohol are added rising temperature for dissolving in 1.5 tons of reactors, be incubated 1.5 hours until dissolving fully at 90 ℃ ± 2 ℃.Second step: crosslinking reaction
In above-mentioned solution, add filler, catalyzer, linking agent and carry out crosslinking reaction and generate a kind of new cancellated metastable protective colloid that has half an hour, thereby improved time of drying, the stability of product, significantly reduce cost simultaneously.The 3rd step: complex reaction
90 ℃ ± 2 ℃ add hydrochloric acid, zinc oxide or zinc chloride and utilize zine ion further complex reaction 10 minutes under acid situation in the reacted protection glue by linking agent, with further raising bonding strength and stability.The 4th step: condensation reaction
In through the protection glue after the complex reaction, add again formaldehyde about 90 ℃ and the starch in the protection glue, [OH] in the polyvinyl alcohol structures carried out condensation reaction 10-15 minute; transfer PH to neutral standby with sodium hydroxide, to improve the water resistance and the resistance to frost of product.The 5th step: polyreaction
Nonyl Soxylat A 25-7, methyl alcohol, copper sulfate, initiator 1/3 are added protection glue begin to drip vinyl acetate between to for plastic and vinylformic acid mix monomer again; polyreaction between 76 ℃-80 ℃; add one time initiator per half an hour of monomeric while dripping; to remain initiator after drip finishing again and add slaking half an hour, and reduce to 40-50 ℃ and add the softening agent discharging afterwards that is mixed.Below be river, Zhejiang, Shanghai one band like product situation contrast table look-up:
| Solid content | Wound card bonding time of drying (25 ℃) | The bonding time 12h of shaving board bonding plane bonding strength | The raw materials cost present price | Storage time | |
| Zhejiang, the A glue place of production on the market | 30+2％ | 12 hours | A small amount of destruction | 3300 yuan | Constant more than 1 year |
| The B glue place of production on the market | 30 ± 2% is filled | 16 hours | Partly destroy | 2600 yuan | Layering in 3 months, precipitation |
| Shanghai, the C glue place of production on the market | 30% ± 2 is filled | 15 hours | Partly destroy | 2400 yuan | A layering in month is mouldy |
| Present embodiment 1 | 30 ± 2% is filled | 12 hours | All destroy | 1400 yuan | Constant more than 1 year |
Claims (4)
1, a kind of modified polyvinyl acetate emulsion, its composition by weight is as follows:
Water 500-700 part borax or boric acid 0.5-5 part, starch 25-60 part, acid polyethylene or polyvinyl alcohol 50-90 part, complexing agent 2-8 part, hydrochloric acid 6-30 part, formaldehyde 20-50 part, acetic acid 0.5-2 part, sodium hydroxide 5-10 part, filler 50-200 part, nonyl Soxylat A 25-7 2-4 part, ammonium persulphate 1-3 part, vinyl acetate between to for plastic and vinylformic acid 52-306 part, copper sulfate and methyl alcohol are a small amount of, dibutyl phthalate 5-30 part
2, modified polyvinyl acetate emulsion according to claim 1, its composition by weight is as follows:
600 parts in water, 100 parts of fillers, 40 parts of starch, 60 parts of polyvinyl alcohol, 22 parts of hydrochloric acid, 2.5 parts of boraxs, 5 parts of complexing agents, 24 parts in formaldehyde, 5 parts in sodium hydroxide, 3 parts of nonyl Soxylat A 25-7s, 2.5 parts of ammonium persulphates, 300 parts in vinyl acetate between to for plastic and vinylformic acid, copper sulfate and methyl alcohol trace, 30 parts of dibutyl phthalates.
3, modified polyvinyl acetate emulsion according to claim 1 and 2 is characterized in that: described complexing agent is a zinc oxide.
4, modified polyvinyl acetate emulsion according to claim 1 and 2 is characterized in that: described complexing agent is a zinc chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00119047 CN1124291C (en) | 2000-10-20 | 2000-10-20 | Modified polyvinyl acetate emulsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00119047 CN1124291C (en) | 2000-10-20 | 2000-10-20 | Modified polyvinyl acetate emulsion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350008A true CN1350008A (en) | 2002-05-22 |
| CN1124291C CN1124291C (en) | 2003-10-15 |
Family
ID=4587442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00119047 Expired - Fee Related CN1124291C (en) | 2000-10-20 | 2000-10-20 | Modified polyvinyl acetate emulsion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1124291C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293160C (en) * | 2005-02-25 | 2007-01-03 | 苏州市丛岭胶粘剂有限公司 | Watermark-free heat transfer printing adhesive |
| CN102219435A (en) * | 2011-06-03 | 2011-10-19 | 浏阳市金仁竹木工艺品有限公司 | Decorative surface slurry used for wood line printing process |
| CN106008763A (en) * | 2016-06-28 | 2016-10-12 | 石媛 | Production method of polyvinyl acetate |
| EP3699143A1 (en) * | 2019-02-25 | 2020-08-26 | United Biopolymers, S.A. | Alkaline hydro binding compatibilizer agent on the basis of poly(vinyl alcohol) and the method for the production and its use |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT3632937T (en) * | 2018-10-04 | 2022-07-18 | Amelotec Ltd | Hydraulic binding agent for polymers and method for production of the same |
-
2000
- 2000-10-20 CN CN 00119047 patent/CN1124291C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1293160C (en) * | 2005-02-25 | 2007-01-03 | 苏州市丛岭胶粘剂有限公司 | Watermark-free heat transfer printing adhesive |
| CN102219435A (en) * | 2011-06-03 | 2011-10-19 | 浏阳市金仁竹木工艺品有限公司 | Decorative surface slurry used for wood line printing process |
| CN102219435B (en) * | 2011-06-03 | 2012-12-05 | 浏阳市金仁竹木工艺品有限公司 | Decorative surface slurry used for wood line printing process |
| CN106008763A (en) * | 2016-06-28 | 2016-10-12 | 石媛 | Production method of polyvinyl acetate |
| EP3699143A1 (en) * | 2019-02-25 | 2020-08-26 | United Biopolymers, S.A. | Alkaline hydro binding compatibilizer agent on the basis of poly(vinyl alcohol) and the method for the production and its use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1124291C (en) | 2003-10-15 |
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