DE1569988A1 - Process for the production of hot glue preparations - Google Patents

Description

Process for the preparation of egg glue

The invention relates to a method for the production of hot melt adhesive preparations based on plastic for coating, in particular of Paper and foils.

Heißklelieaaasen distinguished by the fact that they activated by Brwärmoa, am made that tacky "can and ktiviarten even after ErwünEen a long time in this""? Nai * n4 Rem" iben _s ie Klabaachioht retains its Wirksaakeit Ms au more »hours at and is therefore not time-bound in its application. Such preparations are also "delayed"

You El «ben« ese beetaht. Essentially "from a therapeutic substance and one" from Bautttenpertttiix fetten WoiobjB "cher, Bt is known _for such glue ciÄiaen signed by the union of Hjunetatoffdiepereioneu with the listing of the IeingesaahleRim, prepare the resulting mixture and add dryness. The quality of the finished adhesive depends to a large extent on the type of distribution of the plastic and soft cover particles, ie. Because of the indifference of the odor and the delicacy of the WeiahMtoherpartikeX ', Ee great demands are placed on the Ifobltechnik. In particular, when grinding soft wax with a relatively low melting point, difficulties often arise. Clogging or sticking of the grinding passages,

A method has now been found to prepare hot food preparations on steel material. basis using a Woäehraacker fixed at building temperature Avoiding dei? ireifgeaauatsK to produce difficulties. The discovery-

BATH ORIGINAL

909835 / 13S4

1481

The exact method is characterized by mixing at least two aqueous dispersions, one containing plastic and the other containing the plasticizer, followed by drying; of the mixture obtained. The softener dispersion is preferably produced by emulsifying the melted plasticizer, if necessary together with customary auxiliary points, in water heated above the melting point of the plasticizer and cooling the resulting mixture, if necessary with continued drilling. The plasticizer melt is particularly advantageous in water emulsified from about 45 ° to 95 ⁰ C with good stirring, Me erf: dung proper working method is, however, not limited to this temperature range.

Combined dispersions can be used as a hot melt adhesive after the evaporation of the water *. By adding another aqueous plasticizer dispersion, which contains not only solid but also one or more plasticizers that are liquid at room temperature, and / or a further aqueous plastic dispersion, which can also contain small amounts of non-plasticized plastic, the properties of the adhesives can be reduced. & · * ■ vary depending on the intended use.

All thermoplastic materials known per se for the production of hot-melt adhesive preparations are suitable. »Kunststoffe, 21, B. polymeric vinyl compounds, such as polymeric acrylic, ketacrylic and turotouBäur · uad / or vinyl chloridhoiao- and copolymers etc. - All of them are suitable as solid plasticizers known connections in this regard such as * .B. solid esters at tree temperature of phthalic acid, especially diphenyl phthalate, dimethylcyclohesgrl phthalate, Methyl phenyl phthalate, glycloheayl phthalate, N-alkylated toluenesulfonic acid amides, p-toluenesulfonic acid alkyl esters, especially the ethyl esters, etc. -Liquid plasticizers that are also used with solid plasticizers are, for example, phthalic acid di-2-ethyihexyl ester, phthalic acid dibutyl ester, phthalic acid di-iobutyl ester, etc. The percentage composition the hot-melt adhesive measurement moves along the lines of the known ratios.

The particular advantage of the claimed process is that it is effortless. Production of high quality hot melt adhesive preparations with the help of suitable 1 · plasticizer dispersions of always constant optimal particle size.

909835/1354 ··· ^a

BATH ORIGINAL

The adhesives are also particularly suitable for the treatment of paper and foils, whose hot-glue preparations have a TttfÄÖgerten adhesive effect. IKLe Adhesive preparations are either applied to or on natural paper Oberflachenveredeltt! Paper ·, whereby the surface finishing screed is applied as a precautionary measure on the side of the paper opposite the adhesive prepration.

Example It

Approx. 75 ⁰ G, heated "water under good IUiliren emulsified and the mixture cooled without interrupting the BÜhrung * uf Hauratemperatur so Man ty an aqueous dispersion of solid ·" Veichmacher nit about 5OJi Featetoffgehait.

SQ parts of an aqueous polyvinyl propionate dieperion of about 60% and 20 parts of an aqueous polyvinyl propionate dieperion are added to the above dispersion SO jfogen vinyl chloride-vinyl acetate dispersicu.

The mixture is suitable for coating on paper and foils * Example 2f

400 parts Bioyclohexylphthaiet be ausastsen with customary ösulgierhilfsaitteln and, if necessary, a thickener in geachmolzeiiem state e $ wa 400 parts Vasser hot 8O ettiilglert ⁰ G under good 'stirring. After cooling, an aqueous dispersion of the solid plasticizer with a solids content of approx. 50 μl is obtained.

400 parts of bithalic acid di-butyl ether are mixed with 600 parts of water under vigorous stirring and the suspension of a Boulgiex milk mixture is ligated at room temperature,

Parts of the phthalic acid di-butyl ester line are getting old under BÜhren 68 parts of an aqueous vinylchloride-vinylftcetat-Gopolyaerisataiejpersloia mixed and closed without interruption of the lead 163 parts of the 80% aqueous dicyclohexylphialate diepereion added.

_RAn 909835 / 13-64-. _M 4

BATH ORIGINAL

1421

Example 3 »

40 parts of dicyclohexyl phthalate are emulsified together with customary ümilgierhilfemitteln and optionally a thickener in a molten state in about 40 parts of water at 85 ⁰ C with good ßühren and the mixture "cooled without interrupting the Ilührung on llaumtemperatur. This gives an aqueous dispersion having about 60) 4 Solid content.

About 60 parts of a mixture of 67 parts of vinyl chloride / acrylic acid butylene ester copolymer and 33 parts of 2-ethylhexyl phthalate in aqueous dispersion are added to the above dispersion with good charging.

The mixtures of two or more prepared according to the above examples Aqueous dispersions are coated on paper immediately after preparation and dried under mild temperature conditions. The application strength itu is generally about 25g / m.

909 83 5/135 a bad original

Claims (2)

Claims (A process for the production of hot-melt adhesive preparations based on plastics and calibrators that are solid at room temperature, characterized by mixing at least two aqueous dispersions, one containing the plastic and the other containing the solid calibrator, followed by drying. 2. The method according to claim I; characterized in that the plasticizer dispersion is produced by emulsifying the molten plasticizer, optionally together with customary auxiliaries, in water heated above the melting point of the plasticizer and cooling the mixture. 9 0 98 35/1354