DE202009002827U1 - Hydroxy compounds in plastic packaging - Google Patents

Abstract

Solidified material containing hydroxy compounds in a plastic package containing polyethylene or polypropylene, wherein the solidified material has a melting point at standard pressure of 20 to 90 ° C.

Description

The The present invention relates to hydroxy compounds in plastic packaging.

The Logistics of hydroxy compounds with melting points of 20 to 90 ° C is technical challenging, since the hydroxy compounds at typical ambient temperatures quickly clump or melt and complete emptying The packaging is made very difficult if not prevented.

Therefore Such hydroxy compounds are commonly used in large, rigid containers liquid Goods transported, which is associated with high energy demand and due the required temperature control and control only for size Quantities is sufficiently practical. Furthermore, containers have the Disadvantage on that always a certain amount of hydroxy compounds in the container remain.

alternative Hydroxy compounds become common the manufacturer in particular then converted into grilled or scaly form, if transport or store smaller quantities of up to a few tonnes should be. The prills or scales are typically called Sackware offered. A disadvantage of this form, however, is the complex production prills or dandruff using scales and rollers or prilling devices, as well as the fact that clumped or melted goods only incomplete can be removed from the packaging.

It There was therefore a need to find a packaging form of hydroxy compounds that have the disadvantages of the prior art overcomes.

It has now been found that solidified material containing hydroxy compounds in a plastic package containing polyethylene or polypropylene, wherein the solidified material has a melting point at standard pressure from 20 to 90 ° C has, a transport and Storage form for the aforementioned hydroxy compounds, which are of minimal technical and energetic use maximum safety and easy removability allowed the solidified material from the plastic packaging.

Of the Term hydroxy compounds having a melting point at standard pressure from 20 to 90 ° C includes all compounds having at least one hydroxy group which meet the aforementioned melting point condition. These are, for example also oligomeric or polymeric carboxylic acid esters with terminal hydroxy groups locked in.

Of the Term material containing hydroxy compounds also includes Mixtures containing one or more hydroxy compounds.

preferred solidified materials containing hydroxy compounds in a plastic package containing polyethylene or polypropylene are those in which the solidified the hydroxy compounds to 90 to 100, preferably to 95 to 100, and more preferably 98 to 100% by weight.

preferred Hydroxy compounds having a melting point at standard pressure of 20 to 90 ° C are primary, secondary or tertiary Mono-, di-, tri- and polyalcohols having a melting point at standard pressure of 20 ° C to 90 ° C, preferred 24 ° C to 72 ° C.

Particularly preferred hydroxy compounds are oligomeric reaction products of 1, ω-dicarboxylic acids, such as, for example, adipic acid with 1, ω-dialcohols, such as, for example, 1,6-hexanediol, if they contain terminal hydroxyl groups and the hydroxy compounds indicated in the table below: alcohol Common name Melting point at standard pressure Dodecane-1-ol lauryl 24 Tridecane-1-ol 32 Tetradecane-1-ol myristyl 39 Hexane-1,6-diol hexamethylene 41 Pentadecane-1-ol 44 Nonane-1,9-diol nonamethylene 45 Octadecane-1-ol stearyl 56 Hexadecane-1-ol cetyl alcohol 58 Octane-1,8-diol octamethylene 59 trimethylolpropane TMP 60 Decane-1,10-diol decamethylene 72

All Particularly preferred hydroxy compounds are hexane-1,6-diol and Trimethylolpropane.

• • als Flüssigkeit oder fließfähige Masse in eine Kunststoffverpackung enthaltend Polyethylen oder Polypropylen eingegossen wird und
• • die Kunststoffverpackung enthaltend Polyethylen oder Polypropylen anschließend verschlossen wird, wobei
• • das Verschließen vor oder nach Erstarren des Materials in seiner Verpackung erfolgt, bevorzugt vor dem Erstarren.

The production of solidified material containing hydroxy compounds in a plastic package containing polyethylene or polypropylene, for example, can be such that the material containing hydroxy compounds

• Is poured as a liquid or flowable mass in a plastic packaging containing polyethylene or polypropylene, and
• The plastic packaging containing polyethylene or polypropylene is subsequently closed, wherein
• • Closing takes place before or after solidification of the material in its packaging, preferably before solidification.

In a preferred embodiment will pour carried out under the greatest possible exclusion of air or under protective gas.

In In this context, it should be noted that the term solidifying or to express frozen, that the material is at its bottling not frozen, but liquid is or as a flowable mass is present.

According to the invention as solidified materials understood as those at 20 ° C, a viscosity of more as 10,000,000 mPa · s, preferably more than 50,000,000 mPa · s.

preferred Plastic packaging containing polyethylene or polypropylene are foils or tubes containing polyethylene or polypropylene that is too open before pouring bags welded be or open sacks containing polyethylene or polypropylene.

Preferably show the films, hoses or sacks a wall thickness from 0.020 to 1 mm, more preferably 0.1 to 0.25 mm on and be for Packing quantities of 5 to 50 kg, preferably 20 to 30 kg, especially preferably used 20 to 25 kg of the solidified material.

The weight ratio from packaging to solidified material is for example 1: 2000 to 1:50, preferably 1: 500 to 1: 100.

The Plastic packaging preferably has handle or retaining holes. In this way, the emptying of the solidified material through better fixation possibilities even easier. Also, the Plastic packaging usual Sollbruch- or -Sollschnittstellen, Aufreißhilfen or appropriate Markings containing an opening of plastic packaging facilitate.

Especially Preferred plastic packaging are those that are in contact with the product Layer at least 95% by weight of polyethylene (LDPE, HDPE), polypropylene (PP, or advanced or directional types like OPP, BOPP), or Mixtures thereof. To increase the stability, such Plastic packaging possibly further plastic layers which are not product-contacting.

The filled with the solidified material Plastic packaging itself can turn from a secondary packaging such as cardboard boxes, barrels, Be surrounded by containers or in the usual way Way on pallets z. B. be enveloped by another protective film.

It is especially surprising to look at that typically solidified to solid block Materials directly on solidification from the liquid or flowing phase solve again from their plastic packaging and thus in the subsequent removal Completely and can be easily removed from the plastic packaging.

One Another particular advantage is that the weight ratio of Plastic packaging to solidified material can be very low.

The following Example is intended to explain the subject matter of the invention without, however, it to restrict.

example

20.0 kg of hexane-1,6-diol are at 80 ° C poured into a polypropylene bag with a wall thickness of 100 microns and by means of a foil welder tightly closed a few centimeters above the liquid level. After 24 h storage at ambient temperature, the bag is one solid block solidifies.

To He will transport this bag on a standard pallet a cutting device (knife) cut along several times. The block of solidified hexane-1,6-diol escapes as such in a row without residues in the polypropylene bag to leave.

Claims (6)

Solidified material containing hydroxy compounds in a plastic package containing polyethylene or polypropylene, wherein the solidified material has a melting point at standard pressure from 20 to 90 ° C. Solidified material in a plastic package for protection claim 1, characterized in that it hydroxy compounds contains from 90 to 100 wt .-%. Solidified material in a plastic package for protection claim 1 or 2, characterized in that the hydroxy compounds primary secondary or tertiary Mono-, di-, tri- or polyalcohols with a melting point at standard pressure from 24 ° C up to 72 ° C are. Solidified material in a plastic package for protection claim 1, 2 or 3, characterized in that the Hydroxy compounds are hexane-1,6-diol or trimethylolpropane. Solidified material in a plastic package for protection claim 1, 2, 3 or 4, characterized in that the product-touching Layer of plastic packaging at least 95% wt% polyethylene, polypropylene or mixtures thereof. Solidified material in a plastic package for protection claim 1, 2, 3, 4 or 5, characterized in that the weight ratio from plastic packaging to solidified material 1: 2000 to 1:50.