ZA200105362B - Filler-containing polymer dispersion, method for its production and its use. - Google Patents
Filler-containing polymer dispersion, method for its production and its use. Download PDFInfo
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- ZA200105362B ZA200105362B ZA200105362A ZA200105362A ZA200105362B ZA 200105362 B ZA200105362 B ZA 200105362B ZA 200105362 A ZA200105362 A ZA 200105362A ZA 200105362 A ZA200105362 A ZA 200105362A ZA 200105362 B ZA200105362 B ZA 200105362B
- Authority
- ZA
- South Africa
- Prior art keywords
- filler
- particles
- polymer dispersion
- weight
- containing polymer
- Prior art date
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- 239000000945 filler Substances 0.000 title claims description 83
- 239000004815 dispersion polymer Substances 0.000 title claims description 43
- 238000000034 method Methods 0.000 title claims description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000002245 particle Substances 0.000 claims description 135
- 229920000642 polymer Polymers 0.000 claims description 62
- -1 polyethylene Polymers 0.000 claims description 37
- 239000000203 mixture Substances 0.000 claims description 33
- 239000012766 organic filler Substances 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 23
- 229920000620 organic polymer Polymers 0.000 claims description 22
- 239000011256 inorganic filler Substances 0.000 claims description 19
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 17
- 239000000178 monomer Substances 0.000 claims description 17
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 15
- 150000002148 esters Chemical class 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 13
- 239000002736 nonionic surfactant Substances 0.000 claims description 13
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 13
- 239000002563 ionic surfactant Substances 0.000 claims description 11
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical class C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical class C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 10
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 6
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 5
- 239000008199 coating composition Substances 0.000 claims description 5
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- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
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- 239000004408 titanium dioxide Substances 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 150000004683 dihydrates Chemical class 0.000 claims description 2
- 239000008346 aqueous phase Substances 0.000 claims 5
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- 125000004432 carbon atom Chemical group C* 0.000 description 23
- 125000000217 alkyl group Chemical group 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- 238000006116 polymerization reaction Methods 0.000 description 12
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 11
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- 125000002877 alkyl aryl group Chemical group 0.000 description 4
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- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 4
- 229940043264 dodecyl sulfate Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
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- 229910010272 inorganic material Inorganic materials 0.000 description 4
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
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- 150000004665 fatty acids Chemical class 0.000 description 3
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- 238000010557 suspension polymerization reaction Methods 0.000 description 3
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- LGXVIGDEPROXKC-UHFFFAOYSA-N 1,1-dichloroethene Chemical group ClC(Cl)=C LGXVIGDEPROXKC-UHFFFAOYSA-N 0.000 description 2
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
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- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000012963 UV stabilizer Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
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- FSYKKLYZXJSNPZ-UHFFFAOYSA-N sarcosine Chemical compound C[NH2+]CC([O-])=O FSYKKLYZXJSNPZ-UHFFFAOYSA-N 0.000 description 2
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- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- NKJOXAZJBOMXID-UHFFFAOYSA-N 1,1'-Oxybisoctane Chemical class CCCCCCCCOCCCCCCCC NKJOXAZJBOMXID-UHFFFAOYSA-N 0.000 description 1
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- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
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- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 150000002688 maleic acid derivatives Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
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- 229920000847 nonoxynol Polymers 0.000 description 1
- 229920002113 octoxynol Polymers 0.000 description 1
- BARWIPMJPCRCTP-CLFAGFIQSA-N oleyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCCOC(=O)CCCCCCC\C=C/CCCCCCCC BARWIPMJPCRCTP-CLFAGFIQSA-N 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 150000002972 pentoses Chemical group 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 150000003022 phthalic acids Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001485 poly(butyl acrylate) polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 235000010408 potassium alginate Nutrition 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 150000003151 propanoic acid esters Chemical class 0.000 description 1
- 229910052903 pyrophyllite Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229940043230 sarcosine Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
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- 239000011163 secondary particle Substances 0.000 description 1
- 238000005029 sieve analysis Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
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- 235000010413 sodium alginate Nutrition 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- RPACBEVZENYWOL-XFULWGLBSA-M sodium;(2r)-2-[6-(4-chlorophenoxy)hexyl]oxirane-2-carboxylate Chemical compound [Na+].C=1C=C(Cl)C=CC=1OCCCCCC[C@]1(C(=O)[O-])CO1 RPACBEVZENYWOL-XFULWGLBSA-M 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 235000011069 sorbitan monooleate Nutrition 0.000 description 1
- 239000001593 sorbitan monooleate Substances 0.000 description 1
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- 229910052645 tectosilicate Inorganic materials 0.000 description 1
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- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
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- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical class OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Description
Filler-containing Polymer Dispersion, Method for its Production and its Use
This invention relates to a filler-containing polymer dispersion which contains organic or inorganic filler particles and particles of at least one synthetic organic polymer, the ratio of the particle size of the filler particles to the particle size of the polymer particles being in the range from 1.1:1 to 20:1.
Polymer particles with a diameter of about 0.01 to about 30 pm play an important role in many areas of plastics technology. Adhesives or coating compositions containing polymer particles with diameters in this range are frequently used in particular for bonding articles or for coating surfaces. Examples of the range of applications include decorative surface coating in the form of paint coatings or other coatings and the bonding of two surfaces having identical or different properties with adhesives of the type frequently encountered in the field of bonding.
The polymer particles mentioned are generally produced by polymerization of olefinically unsaturated monomers of which the properties can be modified by the polymerization of mixtures of various monomers, for example by co- or terpolymerization. The modified properties of a single polymer particle are generally transferred as a collective property to a surface coating or bond prepared with the aid of such polymer particles.
Collective properties which are often subjected to an application-related modification include, for example, hardness, elasticity and - above all in adhesive applications - bond strength, open time or early adhesion.
Certain properties of the composition used to prepare the coating or the bond, for example the surface coating composition or the adhesive, are just as important. In this connection, viscosity, flow behavior or residual monomer content are often modified in dependence upon the desired application.
Inorganic or organic fillers are often added to a surface coating composition or an adhesive containing polymer particles to modify the above-mentioned properties of a surface coating or a bond. Inorganic fillers reduce the level of organic polymer material in the coating and thus contribute to greater hardness of the coating and to protection of the environment and raw materials through a lower content of organic polymers. Organic fillers are capable of imparting certain combined properties of the filler and polymer particles present therein, for example to a polymer dispersion.
Whereas mixtures of polymer particles and fillers frequently lead to dull, rough surfaces in the field of surface coating, their effect in adhesives is often that the strength and elasticity of adhesive bonds are greatly reduced. In addition, the presence of fillers in polymer dispersions often contributes to a reduction in early adhesive strength.
Such effects are drastically noticeable above all in the field of high- quality applications of surface coatings and bonds, such as high-gloss paints and bonds in the paper or furniture industry. For example, a significant reduction in ultimate adhesive strength on wood is often observed, accompanied by reduced early adhesion.
EP-A 0 392 065 relates to polymer-coated filler particles where a filler core is coated with a membrane of a hydrophobic polymer. To produce these polymer-coated particles, a monomer is polymerized in aqueous dispersion in the presence of filler particles and an amphiphilic polymer. The document in question does not contain any teaching on the production of filler-containing polymer dispersions in which the filler particles and the polymer particles are present substantially alongside one another.
DE-OS 22 43 687 relates to an adhesive, more particularly for the production of corrugated cardboard. Although this document does describe a polymer dispersion in which polymer particles and mineral particles are present together and does indicate size ranges for the particular particles, it does not contain any teaching as to the particle size ratio along the lines of the present specification.
Accordingly, the problem addressed by the present invention was to overcome the above-mentioned disadvantages of the mixtures of polymer particles and fillers known from the prior art. More particularly, the problem addressed by the present invention was to provide a filler-containing polymer dispersion which would have the advantages of the mixtures of polymer particles and fillers known from the prior art without any of their known disadvantages.
Accordingly, a particular problem addressed by the present invention was to provide a filler-containing polymer dispersion which could be used for the production of high-quality surface coatings or bonds.
Another problem addressed by the invention was to provide a filler- containing polymer dispersion which could be used as a high-strength adhesive, particularly on wood.
A further problem addressed by the invention was to provide a filler- containing polymer dispersion with a low residual monomer content.
Yet another problem addressed by the invention was to provide an adhesive which would have an adequate open time, high early adhesion and a low viscosity coupled with excellent flow behavior.
A final problem addressed by the invention was to provide a process for the production of such filler-containing polymer dispersions.
The problems stated above are solved by a filler-containing polymer dispersion which contains organic or inorganic filler particles and particles of at least one synthetic organic polymer polymerized in the presence of the filler particles, the ratio of the particle diameter of the filler particles to the particle diameter of the polymer particles being in the range from 1.1:1 to 20:1.
Accordingly, the present invention relates to a filler-containing polymer dispersion which contains water, particles of at least one organic or at least one inorganic filler or a mixture thereof (filler particles) and particles of at least one synthetic organic polymer polymerized in the presence of filler particles of at least one type (polymer particles), characterized in that the ratio of the particle size of the filler particles to the particle size of the polymer particles is in the range from 1.1:1 to 20:1.
It has been found that surface coating compositions and surface coatings, adhesives and adhesive bonds at least comparable with filler-free coatings, but superior to the filler-containing systems known from the prior art in regard to open time, bond strength and early adhesion can be obtained using the polymer dispersions according to the invention. In addition, the filler-containing polymer dispersions according to the invention generally have a lower viscosity and better flow behavior than the system known from the prior art with comparable polymer contents and filler contents.
A process according to the invention for the production of the filler- containing polymer dispersions is also distinguished from the poly- merization processes known from the prior art by the fact that it shortens the polymerization time in relation to comparable systems, provides for easier temperature control and leads to polymer dispersions with a reduced content of residual monomers in relation to polymer dispersions produced by polymerization processes known from the prior art.
Accordingly, the present invention relates to a filler-containing polymer dispersion which contains water, particles of an organic or inorganic filler (filler particles) or of a mixture of two or more organic or inorganic fillers or a mixture of two or more thereof and particles of at least one synthetic organic polymer polymerized in the presence of the filler or the fillers (polymer particles), the ratio of the particle size of the filler particles to the particle size of the polymer particles being in the range from
1.1:1 to 20:1.
Accordingly, the polymer dispersion according to the invention contains either inorganic filler particles of one type or organic filler particles of one type or inorganic filler particles of two or more different types or organic filler particles of two or more different types or organic filler particles of one type and organic filler particles of two or more different types or organic filler particles of one type and inorganic filler particles of two or more different types or inorganic filler particles of two or more different types and organic filler particles of two or more different types.
So far as organic polymer particles in the dispersion according to the invention are concerned, the organic filler particles and the (likewise organic) polymer particles differ to the extent that the organic polymer particles are formed in the presence of the filler particles, i.e. the polymerization of the polymer particles takes place in the presence of the filler particles. The effect according to the invention is obtained even when the organic filler particles and the polymer particles have substantially the same monomer composition. In one preferred embodiment of the invention, however, the organic filler particles and the polymer particles have different monomer compositions.
In the context of the invention, the term “particle size” is understood to be the “d50” value, i.e. the value at which about 50% of the particles have a smaller diameter and about 50% of the particles have a larger diameter. In principle, this value may be determined by any particle measuring techniques, for example measuring techniques based on the principle of light diffraction. The particle size data appearing in the present specification were obtained with a MASTERSIZER X from Malvern
Instruments, Herrsching, Germany (version 1.2b). The mode of operation of this instrument is based on the diffraction of a light beam, the particle size being correlated with the diffraction angle.
Other techniques for determining particle sizes include, for example,
granulometry in which a uniform suspension of a small quantity of the powder to be investigated is prepared in a suitable dispersion medium and is then exposed to sedimentation. The percentage distribution of the particle sizes can be estimated from the correlation between size and density of the spherical particles and their sedimentation rate as determined by Stokes’ law and the sedimentation time. Other methods for determining particle size include microscopy, electron microscopy, sieve analysis, sedimentation analysis, determination of the surface density and the like. “Polymer particles” in the context of the present invention are understood to be dispersed particles of a substantially water-insoluble synthetic organic polymer polymerized in the presence of an inorganic or organic filler particle or a mixture of two or more such filler particles, as described above.
According to the invention, suitable filler particles are any organic or inorganic particles which have a particle size (as defined above) of about 0.033 to about 10 ym, for example about 0.05 to about 5 ym or about 0.1 to about 4 um or 0.2 to about 3 pm or about 0.5 to about 1.0 um. According to the invention, particle size classification is based on the size of the primary particles.
A “primary particle” in the context of the present invention is understood to be a particle which is held together by primary ionic or covalent forces, for example in the form of a crystal lattice. In contrast to the primary particles, “secondary particles” are understood to be agglomerates of two or more primary particles which adhere to one another at the outer surfaces or boundaries of the primary particles under the effect of weak ionic forces or other polarity-based forces and which can be broken up into the primary particles with minimal energy, for example by simple mechanical dispersion and/or by addition of a dispersant which breaks up the particles by eliminating or reducing the weak binding forces between the primary particles.
Filler particles suitable for the purposes of the invention are, for example, inorganic materials which are inert to the at least one organic polymer and during the production of the filler-containing polymer dispersion under the prevailing reaction conditions. Examples of suitable inorganic materials are aluminium silicates, for example andalusite, sillimanite, kyanite, mullite, pyrophyllite or imogolite. Also suitable are compounds based on sodium aluminium or calcium silicates. Other suitable inorganic materials are minerals, such as silica, silica flour, silica gel, barium sulfate, metal oxides, such as zinc oxide, titanium dioxide, zeolites, kaophilite, leucite, potash feldspar, biotite, the group of soro-, cyclo-, ino-, phyllo- and tecto-silicates, the group of soluble or poorly soluble sulfates, such as gypsum, anhydrite or heavy spar, and calcium minerals, such as talcum or chalk (CaCO;). The inorganic materials mentioned may be used individually, i.e. as filler particles of a single type, for the purposes of the present invention. However, a mixture of two or more types of the filler particles mentioned may equally well be used.
Other filler particles suitable for the purposes of the invention are organic filler particles in the presence of which the polymerization of the polymer particles may take place. Suitable organic filler particles are, for example, polyvinyl acetate and copolymers of polyvinyl acetate with one or more polymerizable compounds, polystyrene, polyethylene, polypropylene, waxes, such as polyethylene wax, polybutylene, polybutadiene, copolymers of butadiene and styrene, polyacrylonitrile, resins, such as rosin or hydrocarbon resins, polyacrylate esters or polymethacrylate esters with linear or branched aliphatic, aromatic or cycloaliphatic alcohols, such as methanol, ethanol, propanol, isopropanol, the isomeric butanols and higher homologs of the alcohols mentioned containing up to about 22 carbon atoms, cyclohexanol, benzyl alcohol and the like, polydialkyl maleates, such as dibutyl maleate and copolymers thereof or polymers containing silyl groups, such as polyvinyl silanes or copolymers of vinyl silane with one or more of the monomers mentioned.
In one preferred embodiment of the invention, the organic filler particles contain as organic filler filler particles containing polyvinyl acetate or copolymers of polyvinyl acetate with one or more polymerizable compounds, polystyrene, polyethylene, polypropylene, waxes, polybutylene, polybutadiene, copolymers of butadiene and styrene, polyacrylonitrile, resins, polyacrylate esters or polymethacrylate esters or polymers containing silyl groups. In another preferred embodiment, the organic filler particles consist of the polymers mentioned.
In one preferred embodiment of the invention, the filler-containing polymer dispersion contains less than five different types of filler particles, for example four, three or two different types. In another embodiment of the present invention, the polymer dispersion according to the invention contains filler particles of only one type.
The filler particles usable in accordance with the present invention may have smooth, rough or porous surfaces. In one preferred embodiment, the filler particles have a rough surface or a porous surface.
In one preferred embodiment of the invention, the filler-containing polymer dispersions according to the invention contain particles of chalk (CaCO0s3), gypsum (CaS0,) as anhydrite, hemihydrate or dihydrate, silica flour, silica gel, titanium dioxide, silica flour, talcum or a layer silicate as filler.
In another preferred embodiment of the invention, the filler- containing dispersion according to the invention contains chalk (CaCOs3) or gypsum (CaSO4) or a mixture of filler particles containing chalk and gypsum as the filler particles. In one particularly preferred embodiment, chalk particles are present as the filler particles.
The filler-containing polymer dispersion contains polymer particles consisting of an organic polymer or of a mixture of two or more organic polymers.
Suitable organic polymers are any organic polymers obtainable by radical polymerization of olefinically unsaturated and radical-polymerizable monomers.
Olefinically unsaturated monomers accessible to emulsion polymerization are particularly suitable for the production of the polymer particles. Suitable polymers are, for example, vinyl ester polymers of which the basic monomeric unit is a vinyl ester of a linear or branched carboxylic acid containing about 2 to about 10 carbon atoms.
The vinyl ester polymers are used not only as homopolymers or copolymers of vinyl ester monomers; in another embodiment of the invention, a copolymer of vinyl acetate and ethylene (EVA copolymer) is used as the organic polymer.
Other suitable organic polymers emanate from the group of 16 styrene/butadiene rubbers (SBRs). Rubbers such as these are produced by copolymerization of styrene and butadiene and generally contain the two monomers in a ratio by weight of about 23.5 : 76.5 or about 40 : 60.
The SBRs are normally produced by emulsion polymerization in water.
Another suitable group of polymers are the polyvinyl acetates (PVAC). Polyvinyl acetates are thermoplastic polymers of vinyl acetate.
The polymerization is generally carried out by suspension or emulsion polymerization.
Another suitable group of polymers are the polyethylene homo- and copolymers. A radical polymerization of ethylene is carried out, for example, in the high-pressure polymerization to LDPE under pressures of about 1,400 to 3,500 bar and at temperatures of 150 to 350°C. The reaction is initiated by oxygen or peroxides. Suitable comonomers are linear or branched a,p-unsaturated olefins.
Another group of suitable polymers are the polyacrylates or the polymethacrylates or the copolymers of acrylates and methacrylates thereof. The polymers mentioned may optionally have a free acid content which corresponds to 20 - 25 ml of 0.1 N KOH solution.
Another suitable polymer is polyvinylidene chloride. The polymer is preferably obtained by emulsion polymerization of 1,1-dichloroethylene.
Copolymers of 1,1-dichloroethylene with acrylates, methacrylates, vinyi chloride or acrylonitrile are particularly suitable.
Another suitable polymer is polyvinylidene fluoride. This polymer may be obtained by polymerization of vinylidene fluoride and may be adapted in regard to chemical and mechanical properties, for example by copolymerization with suitable monomers, such as ethylene, acrylonitrile, acrylate esters, methacrylate esters and the like.
The polyvinyl chlorides obtainable by suspension polymerization (S-
PVC), micro-suspension polymerization or emulsion polymerization (E-
PVC) are also suitable.
According to the invention, the polymers mentioned may be present in the filler-containing polymer dispersion according to the invention both individually and in the form of mixtures of two or more thereof.
In another preferred embodiment of the invention, the filler- containing polymer dispersion contains polyvinyl acetate or polyacrylate, more particularly polybutyl acrylate, or a mixture of polyvinyl acetate and polyacrylate as polymer particles.
Depending on the properties the polymer particles are required to show and on the method used for their production, the percentage content of filler in the polymer dispersion as a whole may be between about 5 and about 55% by weight. In one preferred embodiment of the invention, the percentage content is between about 5 and about 50% by weight, for example between about 10 and about 35% by weight. In other preferred embodiment, the content of filler particles may be about 15, 20, 25 or 30% by weight or may assume an intermediate value.
The filler-containing polymer dispersion according to the invention may optionally contain at least one water-soluble organic polymer with a molecular weight of more than about 600 and an HLB value of at least 15, for example more than about 16 or more than about 17 or more than about 18. This is preferred particularly when at least partly inorganic filler particles are present as filler particles in the polymer dispersion according to the invention.
A compound suitable as a water-soluble organic polymer is, for example, polyvinyl alcohol which may be up to about 99% hydrolyzed, for example between about 70 and about 95% or between about 80 and about 88% hydrolyzed, the acetic acid groups of the chain being replaced by OH groups which are preferably distributed statistically over the entire polymer chain.
The polyvinyl alcohol preferably has a degree of polymerization of more than 100 and, more particularly, more than about 2,000. Particularly good results can be obtained, for example, with polyvinyl alcohol having a degree of polymerization of about 1,000 to about 2,000.
The polyvinyl alcohol preferably has an HLB value of at least about 19 or at least about 20, for example about 21 to about 26, for example about 22 to about 24.
Suitable polyvinyl alcohols are obtainable from Clariant, for example under the names of Mowiwol 40/88, Mowiwol 26/88, Mowiwol 8/88 or
Mowiwol 4/88.
Other water-soluble organic polymers suitable for use in accordance with the invention consist, for example, of the cellulose ethers, carboxymethyl celluloses, hydroxyethyl celluloses, casein, sodium or potassium alginates, polyurethanes, etc.
In another embodiment of the invention, the ratio of the mean specific surface of organic polymers to organic or inorganic filler particles is about 5:1. The total specific surface corresponding to the inorganic fillers, based on the organic water-soluble polymers, in the dispersion according to the invention is about 5% to about 35% of the total surface of the dispersion.
In another embodiment of the invention, the fillers increase the mean total specific surface of the dispersion.
In another preferred embodiment of the invention, the filler- containing polymer dispersion contains at least one ionic surfactant with an
HLB value of 1 to 10. In one preferred embodiment of the invention, the ionic surfactant has a molecular weight of less than about 600.
Anionic, cationic or ampholytic surfactants or mixtures of two or more thereof may be present. Examples of suitable anionic surfactants are alkyl sulfates, more particularly those with a chain length of about 8 to about 18 carbon atoms, alkyl and alkaryl ether sulfates containing about 8 to about 18 carbon atoms in the hydrophobic part and 1 to about 10 ethylene oxide (EO) or propylene oxide (PO) units or mixtures thereof in the hydrophilic part of the molecule, sulfonates, more particularly alkyl sulfonates, containing about 8 to about 18 carbon atoms, alkylaryl sulfonates containing about 8 to about 18 carbon atoms, taurides, esters and semiesters of sulfosuccinic acid with monohydric alcohols or alkylphenols containing 4 to about 15 carbon atoms, which may optionally be ethoxylated with 1 to about 20 EO units, alkali metal and ammonium salts of carboxylic acids, for example of fatty acids or resin acids containing about 8 to about 32 carbon atoms or mixtures thereof, phosphoric acid partial esters and alkali metal and ammonium salts thereof.
In one preferred embodiment of the invention, alkyl or alkaryl phosphates or alkyl or alkaryl sulfates containing about 8 to about 22 carbon atoms in the organic moiety, alkyl ether or alkaryl ether phosphates or alkyl ether or alkaryl ether sulfates containing about 8 to about 22 carbon atoms in the alkyl or alkaryl moiety and 1 to about 10 EO units or a mixture of two or more thereof are used as anionic surfactants.
In another preferred embodiment, an alkyl or alkaryl sulfate containing about 8 to about 22 carbon atoms in the organic moiety or an alkyl ether or alkaryl ether sulfate containing about 8 to about 22 carbon atoms in the alkyl or alkaryl moiety and 1 to about 10 EO units or a mixture of two or more thereof is used as anionic surfactant.
Examples of cationic surfactants are salts of primary, secondary or tertiary fatty amines containing about 8 to about 24 carbon atoms with acetic acid, sulfuric acid, hydrochloric acid or phosphoric acids, quaternary alkyl and alkyl benzene ammonium salts, more particularly those of which the alkyl groups contain about 6 to about 24 carbon atoms, more particularly the halides, sulfates, phosphates or acetates or mixtures of two or more thereof, alkyl pyridinium, alkyl imidazolinium or alkyl oxazolidinium salts, more particularly those of which the alkyl chain contains up to about 18 carbon atoms, for example the halides, sulfates, phosphates or acetates or mixtures of two or more thereof.
Examples of ampholytic surfactants are long-chain substituted amino acids, such as N-alkyl di(aminoethyl)glycine or N-alkyi-2- aminopropionic acid salts, betaines, such as N-(3-acylamidopropyl)-N,N- dimethyl ammonium salts with a Cgs acyl group or alkyl imidazolium betaines.
In one preferred embodiment of the present invention, the following anionic surfactants are used: the alkali metal salts, more particularly the Na salt, of Cq2/14 fatty alcohol ether sulfates, alkyl phenyl ether sulfates, more particularly the alkali metal or NH, salts thereof, Na-n-dodecyl sulfate, di-K- oleic acid sulfonate (Cig), Na-n-alkyl-(C10C13)-benzene sulfonate, Na-2- ethyl hexyl sulfate, NHy4 lauryl sulfate (Cg14), Na lauryl sulfate (C1214), Na lauryl sulfate (C1216), Na lauryl sulfate (Cig), Na cetyl stearyl sulfate (C1e118), Na oleyl cetyl sulfate (Cie1s), sulfosuccinic acid monoester disodium salt, fatty alcohol sulfosuccinate disodium salt, dialkylsulfosuccinate sodium salt or disodium sulfosuccinate or mixtures of two or more thereof.
If the polymer dispersion according to the invention contains ionic surfactants, they are present in a preferred embodiment of the invention in a quantity of up to about 1% by weight or less, for example in a quantity of up to about 0.8% by weight or about 0.5% by weight or less, based on the dispersion as a whole. Smaller quantities of ionic surfactant, for example up to about 0.2% by weight or less, for example about 0.1% by weight, 0.05% by weight or 0.02% by weight, may also be present. in another preferred embodiment of the invention, the ratio of ionic surfactant to organic water-soluble polymer is about 0.1% to about 3.0%.
In another preferred embodiment, the filler-containing polymer dispersion contains at least one nonionic surfactant with an HLB value of 13 to 20. In one preferred embodiment of the invention, the nonionic surfactant has a molecular weight of less than about 600.
Examples of nonionic surfactants are alkyl polyglycol ethers, preferably those containing about 8 to about 20 EO units and alkyl groups with about 8 to about 20 carbon atoms, alkylaryl polyglycol ethers, preferably those containing about 8 to about 40 EO units and about 8 to about 20 carbon atoms in the alkyl or aryl groups, ethylene oxide/propylene oxide (EO/PO) block copolymers, preferably those containing about 8 to about 40 EO units and the same number of PO units, addition products of alkyl amines containing alkyl groups with about 8 to about 22 carbon atoms with ethylene oxide or propylene oxide, fatty and resin acids containing about 6 to about 32 carbon atoms, alkyl polyglycosides with linear or branched, saturated or unsaturated alkyl groups containing on average about 8 to about 24 carbon atoms and an oligoglycoside group containing about 1 to about 10 hexose or pentose units on average or mixtures of two or more thereof, natural substances and derivatives thereof, such as lecithin, lanolin or sarcosine, linear organo(poly)siloxanes containing polar groups, more particularly those containing alkoxy groups with up to about 10 carbon atoms and up to about 20 EO or PO groups.
In one preferred embodiment of the invention, the polymer dispersion according to the invention contains, for example, nonyl phenol ethoxylates, octyl phenol ethoxylates, C4214 fatty alcohol ethoxylates, oleyl cetyl ethoxylates, C+¢/18 fatty alcohol ethoxylates, cetyl stearyl ethoxylates, ethoxylated triglycerides, sorbitan monolaurate, sorbitan monooleate, sorbitan-20EO-monooleate, sorbitan-20EO-monostearate or a mixture of two or more thereof as nonionic surfactant.
If the polymer dispersion according to the invention contains nonionic surfactants, they are present in a preferred embodiment of the invention in a quantity of up to about 1% by weight or less, for example up to about 0.8% by weight or about 0.5% by weight or less, based on the dispersion as a whole. Small quantities of nonionic surfactant, for example up to about 0.2% by weight or less, for example about 0.1% by weight, 0.05% by weight or 0.02% by weight, may also be present. In another preferred embodiment, the ratio of nonionic surfactant(s) to organic water- soluble polymers (based on weight) is about 0.01 to about 1.0%. The ratio of nonionic surfactant(s) to anionic surfactant(s) (based on weight) in one preferred embodiment of the invention is about 5:1 to about 1:5, for example about 3:1 to about 1:3 or about 2:1 to about 1:2. In another preferred embodiment of the invention, the ratio by weight of nonionic surfactant to anionic surfactant is about 1.2:1 to about 1:1.2 or about 1:1.
In another preferred embodiment of the invention, the dispersion contains up to about 30% by weight, based on the dispersion as a whole, of additives. The additives include, for example, stabilizers, defoamers, antioxidants, photostabilizers, pigment dispersants, fillers, pH adjusters, plasticizers and the like.
Suitable plasticizers are, for example, esters, such as abietic acid ester, adipic acid ester, azelaic acid ester, benzoic acid ester, butyric acid ester, acetic acid ester, esters of higher fatty acids containing about 8 to about 44 carbon atoms, esters of OH-functional or epoxidized fatty acids,
fatty acid esters and fats, glycolic acid esters, phosphoric acid esters, phthalic acid esters, linear or branched alcohols containing 1 to 12 carbon atoms, propionic acid esters, sebacic acid esters, sulfonic acid esters, thiobutyric acid esters, trimellitic acid esters, citric acid esters and mixtures of two or more thereof. The asymmetrical esters of dibasic aliphatic dicarboxylic acids, for example the esterification product of adipic acid monooctyl ester with 2-ethyl hexanol (Edenol DOA, a product of Henkel
KGaA, Dusseldorf), are particularly suitable.
Other suitable plasticizers are the pure or mixed ethers of monohydric, linear or branched Cs.1¢ alcohols or mixtures of two or more different ethers of such alcohols, for example dioctyl ethers (obtainable as
Cetiol OE from Henkel KGaA, Dusseldorf).
In another preferred embodiment, end-capped polyethylene glycols, for example polyethylene or polypropylene glycol di-Cq.4-alky! ethers, more particularly the dimethyl or diethyl ethers of diethylene glycol or dipropylene glycol and mixtures of two or more thereof, are used as plasticizers.
If it is to be used as an adhesive, the dispersion according to the invention may contain up to about 10% by weight of typical tackifiers.
Suitable tackifiers are, for example, resins, terpene oligomers, coumarone/indene resins, aliphatic petrochemical resins and modified phenolic resins.
The dispersion according to the invention may contain up to about 2% by weight and preferably about 1% by weight of UV stabilizers.
Particularly suitable UV stabilizers are the so-called hindered amine light stabilizers (HALS).
In another preferred embodiment of the invention, the filler- containing polymer dispersion contains about — 10 to 70% by weight of an organic polymer in the form of polymer particles, - 5 to 55% by weight of filler particles,
Claims (21)
1. A filler-containing polymer dispersion which contains water, particles of at least one organic or at least one inorganic filler or a mixture thereof (filler particles) and particles of at least one synthetic organic polymer polymerized in the presence of filler particles of at least one type (polymer particles), characterized in that the ratio of the particle size of the filler particles to the particle size of the polymer particles is in the range from 1.1:1 to 20:1.
2. A filler-containing polymer dispersion as claimed in claim 1, characterized in that the polymer particles have a diameter (d50) of 0.03 to 0.5 ym.
3. A filler-containing polymer dispersion as claimed in claim 1 or 2, characterized in that chalk (CaCO), gypsum (CaSQO,) as anhydrite, hemihydrate or dihydrate, silica flour, silica gel, titanium dioxide, talcum, a layer silicate, barium sulfate or barite is present as the inorganic filler and in that filler particles containing polyvinyl acetate or copolymers of polyvinyl acetate with one or more polymerizable compounds, polystyrene, polyethylene, polypropylene, waxes, polybutylene, polybutadiene, copolymers of butadiene and styrene, polyacrylonitrile, resins, polyacrylate esters or polymethacrylate esters or polymers containing silyl groups are present as the organic filler. 4, A filler-containing polymer dispersion as claimed in any of claims 1 to 3, characterized in that filler particles containing polyvinyl acetate or copolymers of polyvinyl acetate with one or more polymerizable compounds, polystyrene, polyethylene, polypropylene, waxes, polybutylene, polybutadiene, copolymers of butadiene and styrene, polyacrylonitrile, resins, polyacrylate esters or polymethacrylate esters or polymers containing silyl groups are present as the organic filler.
4, A filler-containing polymer dispersion as claimed in any of claims 1 to 3, characterized in that at least one water-soluble organic polymer with a molecular weight of more than 600 and an HLB value of at least 15 is present.
5. A filler-containing polymer dispersion as claimed in any of claims 1 to 4, characterized in that at least one ionic surfactant with an HLB value of 1 to 10 is present.
6. A filler-containing polymer dispersion as claimed in any of claims 1 AMENDED SHEET CLEAN COPY to 5, characterized in that at least one nonionic surfactant with an HLB value of 13 to 20 is present.
7. A filler-containing polymer dispersion as claimed in any of claims 1 to 6, characterized in that it contains — 10to 70% by weight of a water-insoluble organic polymer, : — 51to 55% by weight of filler particles,
— 0.05 to 0.5% by weight of a nonionic surfactant with an HLB value of 13 to 20,
— 0.01 to 0.1% by weight of an ionic surfactant with an HLB value of 1 to 10, —- 0.05 to 10% by weight of a water-soluble organic polymer with a molecular weight of more than 600 and an HLB value of more than 15, — 24.89 to 84.89% by weight of water and — 0to 30% by weight of other additives.
8. A process for the production of a filler-containing polymer dispersion, characterized in that at least one radical-polymerizable monomer is subjected to emulsion polymerization in aqueous phase using a polymerization initiator, the aqueous phase containing filler particles of at least one dispersed filler with a particle size (d50) of 0.01 to 0.5 ym, at least one water-soluble organic polymer with a molecular weight of more than 600 and an HLB value of more than 15.
9. A process as claimed in claim 8, characterized in that the aqueous phase contains an ionic surfactant.
10. A process as claimed in claim 8 or 9, characterized in that the aqueous phase contains a nonionic surfactant.
11. A process as claimed in any of claims 8 to 10, characterized in that a water-soluble polymerization initiator is used.
12. A process as claimed in any of claims 8 to 11, characterized in that it is carried out in at least two successive stages, a dispersion containing f) atleast one ionic surfactant with an HLB value of 1 to 10 or a nonionic surfactant with an HLB value of 13 to 20 or a mixture of two or more thereof, g) atleast one inorganic filler with a particle size (d50) of 0.01 to 0.5 ym, h) atleast one polymerization initiator and i) at least one water-soluble organic polymer with a molecular weight of more than 600 and an HLB value of more than 15 being prepared in a first stage and then heated to a temperature of 70 to 90°C and I); at least one radical-polymerizable monomer being added and polymerized in a second stage.
13. A process as claimed in claim 12, characterized in that the inorganic filler particles are added before the polymerization initiator.
14. A process as claimed in claim 8, characterized in that the filler particles dispersed in the aqueous phase are pre-emulsified with one or more monomers.
15. A process as claimed in claim 14, characterized in that polymerization initiators are added in portions to the preliminary emulsion.
16. A filler-containing polymer dispersion, characterized in that it is produced by the process claimed in any of claims 8 to 15.
17. An adhesive or surface coating composition, characterized in that it contains at least one filler-containing polymer dispersion according to any of claims 1 to 7 or 16 or a filler-containing polymer dispersion produced by the process claimed in any of claims 8 to 15.
29 PCT/EP99/10151
18. A polymer dispersion as claimed in claim 1 or claim 16, substantially as herein described and illustrated.
19. A process as claimed in claim 8, substantially as herein described and illustrated.
20. A composition as claimed in claim 17, substantially as herein described and illustrated.
21. A new polymer dispersion, a new process for providing a polymer dispersion, or a new composition, substantially as herein described. AMENDED SHEET
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CL1998003177 | 1998-12-30 |
Publications (1)
Publication Number | Publication Date |
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ZA200105362B true ZA200105362B (en) | 2002-09-30 |
Family
ID=27672012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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ZA200105362A ZA200105362B (en) | 1998-12-30 | 2001-06-28 | Filler-containing polymer dispersion, method for its production and its use. |
Country Status (4)
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---|---|
AR (1) | AR022180A1 (en) |
PE (1) | PE20001579A1 (en) |
RU (1) | RU2265619C2 (en) |
ZA (1) | ZA200105362B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0612803D0 (en) * | 2006-06-28 | 2006-08-09 | Lucite Int Uk Ltd | Polymeric composition |
RU2458733C1 (en) * | 2011-06-23 | 2012-08-20 | Учреждение Российской академии наук Институт криосферы Земли Сибирского отделения РАН (ИКЗ СО РАН) | Method of stabilising aqueous dispersion |
US20130131405A1 (en) * | 2011-11-18 | 2013-05-23 | Metton America, Inc. | Liquid molding resin with nonswelling mica |
RU2676060C2 (en) * | 2017-03-03 | 2018-12-25 | Дмитрий Николаевич Задорин | Smooth scaled pyrophyllite-based substrate and method for production thereof |
-
1999
- 1999-12-21 RU RU2001121478/04A patent/RU2265619C2/en not_active IP Right Cessation
- 1999-12-29 PE PE1999001345A patent/PE20001579A1/en not_active Application Discontinuation
- 1999-12-30 AR ARP990106878 patent/AR022180A1/en active IP Right Grant
-
2001
- 2001-06-28 ZA ZA200105362A patent/ZA200105362B/en unknown
Also Published As
Publication number | Publication date |
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RU2265619C2 (en) | 2005-12-10 |
AR022180A1 (en) | 2002-09-04 |
PE20001579A1 (en) | 2001-01-28 |
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