DE2245267C3 - Production of polymer blends - Google Patents

Description

contain more than one polymer. when mixing the components 1.) and 2.) one

As a drying agent, solid or liquid 55 can generate considerable heat; This is

chemical or physical drying agents Favorable if the polymer is included in the plasticizer

Find a twist. Otherwise only poorly soluble under the designation »drying- the mixture temperatures

medium «are used in the description and in the description.

Proverbs understood substances that either by The preparations can also be suitable filling chemicals Reaction with the water and / or by substances, adhesives, extenders, thickeners, physical adsorption processes mainly pigments, antioxidants, ozone-inhibiting agents, all water contained in the emulsion in such fungicides, dispersants for fillers or Convert form that it is at room temperature and flame retardant and optionally Schäuunter Atmospheric pressure no longer evaporates. Containment agents; when using the latter Suitable drying agents are, for example, silica products foamed from the preparations acid, types of gypsum such as calcium sulfate.

hemihydrate (which may be used as a binding agent for faster putty binding may contain an accelerator), barium-like sealants, as foil-like pre-formed

Membranes or structures or as surface coatings are used, where appropriate have adhesive properties, so that in these cases cover or protective layers on the coating can be attached.

Shaping can be done by injection molding, molding or calendering, as long as the preparations are still liquid or semi-liquid. On the other hand, film-like structures can be produced by spraying, dipping or brushing the mixture onto a carrier material, wherein the carrier material can be located within the finished film or on one of the surfaces. If necessary, the shaping can also be done by casting with suitable molds previously treated with a release agent. Depending on the type of mixture, the preparations can be poured, extruded or poured into the molds. The preparations set without significant shrinkage occurring, so that large casting molds can also be produced, such as, for example, molds which measure up to 15.2 cm in the smallest dimension. It is often beneficial to heat the molds during the manufacturing process; however, the Erwärinungslemperaturen below 95 ° C should, in particular / wipe about 75 to 90 ⁰ C, are.

The flexible, pre-formed structures usually have a thickness of 0.08 to 2.54 such as, for example 0.159 or 0.106 cm. The foils are generally about 1.2 m wide and up to 3.05 m long; preferred dimensions are 1.2 × 2.4 m Structures can also be designed as an endless belt.

The pre-formed structures can be coated on one side with an adhesive, the The adhesive layer is preferably about 0.005 to 1 cm thick so that it can be attached to other objects can be glued or attached.

The preformed structures can be made by incorporating a fabric or a membrane in the tensile and Tensile strength can be improved and / or modified in addition to the pre-formed structures can be removed from the molds in a very short time when they are remolded. To this Purpose can be metallic or non-metallic in the form of a mesh or a perforated and / or a non-perforated sheet-like material present fabrics or membranes can be used. The pre-formed, flexible plastic structures can therefore be shaped from the polymer mixture in such a way that that they combine with film-like structures of another material, but this is not done Structures existing either on one or both sides of the plastic sheet or plastics may optionally be present within the plastic film.

The foils made of a different material can be less flexible compared to the plastic foil be so that they cause a stiffening effect. Suitable materials for these purposes can be made of fabrics, nets, metal foils, plastic core, plasterboard or reinforcing fillers such as Asbestos, glass, mica or metal fibers are made.

The combined structures of the flexible plastic films and the other film-like structures can either by molding the flexible plastic film and then applying the respective other films, which in turn are either preformed or produced in situ by molding can, or by shaping the sheet-like structure made of another material and then Applying the flexible plastic film are made.

The invention is explained in more detail below with reference to the examples.

ίο B e i s ρ i e 1 1

Mixture A

Parts

1) Chlorinated polyphenyl plasticizer with 62% Cl (e.g. trademark »Arochlor

6062 «) 78

2) Chlorinated polyphenonic plasticizer with 42% Cl (e.g. trademark »Arochlor 1242 «) 29

3) Micronized silica gel (e.g. trademark "Syloid ZNL") 48

4) Nonionic dispersing aid

(e.g. trademark »Texofor 65 A 3 P«) 1

Ingredients 1) to 4) were mixed together to form a heavy liquid.

Mixture B

Parts

5) Polystyrene emulsion (e.g., trademark

"Vinamul 7700") 54

6) Polyacrylate thickener (e.g. trademark »Glopol 2010«) 3

7) Titanium dioxide pigment (rutile) (e.g. commercial

brand »Tioxide RFC 2«) 11

Ingredients 5) to 7) were mixed together to form a thin cream.

Mixture B was then mixed into Mixture A using a small paddle mixer stirred in, leaving a stiff, creamy mass

formed, which was spread out as a thick layer.

After about an hour the product hardened and became rubbery, and after a day it was formed a flexible film.

Example 2

Mixture A parts

1) Aromatic gum processing oil

(e.g. trademark »Flexon 340«) 22

2) 42% Ct chlorinated paraffin plasticizer (e.g., trademark

»Cereclor 42«) 17

3) Chlorinated paraffin plasticizer with 54% Cl (e.g. trademark

"Cereclor 54") 58

4) Calcium Chloride Anhydrous 23

5) whipping chalk (e.g. »Omya Violet

Label Whiting «) 29

6) Paraffin wax with a melting point of

130 ⁰ C (e.g. "BP grade 125/135") 13

Ingredient 6) was melted in a mixture of ingredients 1), 2) and 3). After this To cool, ingredient 47 was added and the total mixture was ground in a three-roll mill.

After adding ingredient 5), a heavy liquid was emitted.

Mixture B

7) Butyl latex (e.g. "Esso grade BP100")

8) titanium dioxide pigment (rutile)

(e.g. »Tioxide RFC 2«)

9) amide sulfonate surfactant (e.g. sodium oleyl p-anisidine sulfonate)

Parts.

The component 9) was mixed in the intended amount of the component 7), and after 30 minutes ingredient 8) was added, a milky liquid being formed.

The mixture B was then stirred into the mixture A, which instantly became thick Formed mass that was poured into forms. After about 10 minutes the mass became rubbery, and after a day a rubbery filler mixture had formed.

Claims (3)

/ j or calcium oxide, calcium chloride, orthoesters such as n -he · trimethyl orthoformate or molecular sieves. The gauges. velocity with which the polymer mixture sta- 1. Process for producing a polymer mile depends on physical properties developed Schung by mixing an aqueous emulsion 5, among other things from the properties and an elastomeric or non-elastomeric polymer - added amounts of the drying agent used, a solid desiccant and a device from; often at least one stochiometr.sche Plasticizer for the polymer, that is, the amount of a chemical drying agent used k e η η ζ e i c h η e t that one can be the aqueous poly, optionally in special cases also meremulsion as a discontinuous phase with an i. with less than the stochiometric amount of work-dispersion of the desiccant in the softening. The plasticizer and the drying agent mixed as a continuous phase and medium must bind a mixture that is sufficient so much drying agent is used that it is liquid, so that the polymer emulsion is simply essential all available water that can be worked with. Drying agent reacts and / or from this i _S Suitable plasticizers for the respectively used is absorbed polymer are known and can be used for the respective 2. The method according to claim 1, characterized in that the intended use is selected in a simple manner shows that the mixing process is mixed with environment * · and / or together. Often use temperature is carried out. Dete plasticizers are, for example, chlorinated di- 3. The method according to claim 1 or 2, characterized in 20 or terphenyls, hydrocarbons, tarols and characterized in that the resulting mixture is petroleum derivatives such as bitumen, ester-like soft-2 contains up to 50 percent by weight of a polymer. makers, chlorinated paraffins and chlorinated paraffin waxes, vegetable oils or polyenes such as polyisobutylenes. 25 Solid or liquid resins, wa.chse or petroleum derivatives can optionally be used to achieve certain properties by, for example, heating and / The invention relates to a method for producing or mixing beforehand with the plasticizers of polymer blends that range from hard and tough to mixed, provided that this blend is at can be adjusted to be soft and flexible. 30 further processing with the plastic emulsion According to the invention, a method of production is sufficiently fluid at the mixing temperatures. Proposed development of polymer blends, in which the mixing is preferably an aqueous emulsion of an elastomeric! or non-temperature, ie without additional heating or cooling, ecstomeric polymers, a solid drying agent carried out; in some cases, however, and a plasticizer for the polymer to be mixed during the mixing process, which is characterized by heating, in these cases the temperature of the aqueous polymer emulsion should not be discontinuous in the mixture rise above 95 ° C.
Phase with a dispersion of the drying agent in In those cases in which commercial polymer emulsions are used mixed with the plasticizer as a continuous phase, it is generally used and so much drying agent that it is not necessary to add additional emulsion stabilizers essentially all the water present with the, since this generally already reacts in the drying agent and / or emulsion is present from this; is reabsorbed under certain conditions. The finished mixture can, for example, include the addition of a stabilizer, advantageously from 2 to 50% or from 5 to 40% by weight, in order to contain one for the particular polymer to be used. 45 to achieve sufficient processing resistance The polymer can be elastomeric or non-elastomeric. Suitable stabilizers are, for example be some organic polymer or copolymer. Protective colloids such as gum arabic, non-ionic According to the process according to the invention, surfactants such as condensation products from fatty alcohols natural or synthetic elastomers or alkylphenols with ethylene oxide, anionic ten- will. Suitable non-elastomeric organic poly- 50 sides such as alkylarylsulfonates or straight-chain alkyl mers are, for example, polyvinyl chloride, polystyrene, sulfates or, in special cases, cationic surfactants Polyacrylates or polyolefins. Optionally, such as cetyl trimethylammonium bromide. Aqueous emulsions can also be processed, which when using certain drying agents