Acronal V ap is processed with fillers in usual mixers. Vacuum planetary mixers have proven suitable for producing sealants. In order to gain optimal filler . Acrylic/vinyl acetate copolymer emulsion. Used in adhesives for laying PVC floor coverings and carpets with many different backings. Offers benefits such as hig. Description. An acrylic/vinyl acetate copolymer emulsion; used as a base for industrial adhesive formulations used as base for packaging and laminating.
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It is believed that some of the emulsifiers from the latex are desorbed from the small accronal and are adsorbed onto the monomer droplets and large polymer particles. Radically crosslinkable polymer compositions containing epoxy functional copolymers. The dispersion can be used as a saturant or binder for paper, textiles or nonwovens.
ACRONAL V 275
High solids copolymer dispersion from a latex and its use in caulks, sealants and adhesives. Fully coalesced and dried films of this dispersion show two separate glass transition temperatures as in Examples 1 and 2. Process for preparing carpets having polyurethane backings obtained from polyurethane latex formulations. We innovate to make your adhesives stick.
Please provide aceonal registered Email ID to reset your password. The emulsifiers a term which includes surfactants useful in the latex or the latex polymerization are the commercial anionic emulsifiers commonly used for emulsion polymerizations such as alkyl sulfonates or polysulfonates; olefin or polyolefin sulfonates or polysulfonates; and carboxylates or polycarboxylates made from alkyls, olefins, or polyolefins. An example of a polymerization using a vinyl acetate acronak starting latex is illustrated in Table VI.
A high solids polymer dispersion according to claim 21, wherein acfonal latex is an acrylate latex, a urethane latex, a vinyl chloride copolymer latex, or a vinylidene chloride copolymer latex, or combinations thereof. Therefore the desiredpolymers of the dispersion are in a rubbery state if not crosslinked during the polymerization their Tg is below the polymerization temperature.
Thus suspensions of polymer particles of less than 0. US USB1 en The material was then mixed with vacuum for 20 minutes to remove any air from the sealant. A portion of the monomer mixture 60 g was added to the stirred latex. The latex serves as a primary source of the smaller particles in the final dispersion of particles.
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Thus, if optional plasticizing agents are in the polymerizations the Tg of the polymer as defined herein can be lower than the Tg of the purified polymer. Our innovative products also help manufacturers in the adhesives, nonwovens and fiber bonding industries meet functional and performance demands. The average aspect ratiois the average from a group of particles of the quotient of the largest diameter over the smallest diameter of each particle.
Examples 9 through 11 utilize the same monomer, n-butyl acrylate, but different starting latex media.
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The nonionic and cationic emulsifiers are desirably used in lesser amounts such as less than 50 wt. Also preferred for the principal polymer as specified above i.
Particle size analysis was run using a Coulter LS However, a significant number of the smaller latex particles, e. Acroal monomers include acrylic acid, methacrylic acid, itaconic acid, maleic acid and the like.
When a caulking formulation starts with a higher solids polymer dispersion, the final caulk can achieve still higher solids content with the addition of nonvolatile fillers.
Polymeric emulsifiers, formed during 2755 reaction or added separately may also be used.
This example used the same latex and procedure as Example 12 and the sole monomer was n-lauryl methacrylate. An article in Recent Developments in Separations Sciences, vol. Other monomers also include functionalized acrylates having from 4 to acrobal carbon atoms such as acrylates having pendant carbon-carbon double bonds or pendant epoxy rings. Examples ofthe limited highly water soluble monomers include olefinic monoacids having3 to 10 carbon atoms, acrylic acid, olefinic diacids having 4 to 12 carbon atoms, and acrylonitriles having 3 to 10 carbon atoms.
ACRONAL V | Brenntag
This modulus and Tg of the polymers is also defined as the modulus or Tg of the polymer as plasticized by any monomers, absorbed surfactants, and other plasticizing chemical compounds.
The viscosities at very high solids contents become paste-like but the materials still are stable to storage and further handling without causing the dispersion to separate into an agglomerated polymer portion and released water.
If the monomers forming high Tg homopolymers e. This example acronl repeated using a monomer mixture with vinylidene chloride and n-butyl acrylate in a A preferred multimodal distribution is from 5 to 30 weight percent of the particles having diameters between 0. Industry Please choose your industry.
The latex desirably is an anionically stabilized latex. A high solids polymer dispersion according to claim 6, wherein said dispersion has at least 80 wt.