DE1569339C3 - - Google Patents

Description

3 4

meren and the powdery resin is a fluid cyanurate; Vinyl and allyl esters of acrylic, methacrylic

Mixer suitable with several nozzles and maleic acid on the lid.

are attached, by means of which the monomer is sprayed onto the powder as examples of fillers. The following can be used after this mixing process:
a free-flowing mass is obtained from the composite 5 metal powder, glass in the form of staple fibers, genents, its weaving and mats; Tissues made from natural and synthetic components are completely gelled. Since when mixing thetic fibers, e.g. B. from polyamides and trees of the components heat is generated, must be avoided; Asbestos in the form of fibers and powder, formation of premature polymerisation, the monomers The resin-monomer mixture to be processed at such a rate, io border resins are not suitable for the production of molding compounds that a temperature of 35 ° C in the mixture is not suitable when it is exceeded the monomers or monomers. Include mixtures at least under sources.

Polymerization products are suitable for the best results in terms of the brevity of the resins

Pressing time, properties and appearance of the pressed parts and the above-mentioned monomers, but especially

To obtain economics of the process, copolymers of vinyl or vinylidene chloride are used

worked according to the invention at temperatures that are with maleic acid, acrylic acid, methacrylic acid esters,

immediately below the number of degrees of thermoforming vinyl esters, e.g. B. vinyl acetate and vinyl propionate. Further

resistance according to Martens the corresponding are suitable as resins polycondensation products,

Plastic body. z. B. from glycols and dicarboxylic acids, such as maleic

By this measure, the mobility and ao and phthalic acid and natural substances, such as. B. Shellac.

The reactivity of the initiator increases and achieves that the resin-monomer mixture can be used immediately

Pressed part immediately after curing, demolded after its manufacture or after months

can be. Storage in granulate form processed on the press

As described above, the resin will become monomer. However, there is also the option of the

Mixture with one or more initiators, 45 air-free granules on an extruder to one

which break down into radicals below room temperature. Drive out the cuttable tape and apply it to this

Initiators that have this property are in one way compacted mass: to be processed on the press,

for example diisopropyl peroxydicarbonate, t-butyl per- Furthermore, the granules can optionally on a

pivalate and acetylcyclohexanesulfonyl peroxide. The cooled mixing roller rolled out into a hide and

Amount of polymerization initiators required 30 the fur either immediately or after months

depends on the nature of the monomers used - storage in heat and cured under pressure

pending and is about 0.2 to 2.0 percent by weight.

based on the resin-monomer mixture. The pressing pressure depends on the nature of the liquid, fast and practically completely radi-mass. In general, compression pressures are sufficient, up to kaiisch polymerizable monomers are for the production 35, preferably 30 to 50 kg / cm ² . The best possible use of the resin-monomer molding compounds, preferably the molding temperature, depends on the thermoforming suitability: resistance of the corresponding molded part and acrylic, methacrylic, α-chloroacrylic acid and their denomination is the preferably suitable thermoplastic materials, such as esters; Acrylic nitriles, α-chloroacrylic and between 55 and 75 ° C. This does not exclude methacrylic acid alone and in a mixture with one another 40 that within the meaning of the invention even at higher temperatures and with other liquid monomers, e.g. B. Temperatures can be worked.
acrylic acid / methacrylic acid methyl ester or acrylic. · 1 1
acid or methacrylic acid amide in methacrylic acid example
methyl ester. Suitable monomers are also: In a fluid mixer, the lid of which is equipped with two styrene, vinyl acetate, vinyl propionate, / S-oxyethyl acrylate, 45 nozzles, both of which have a diameter of methacrylate, / 3-oxypropyl acrylate, methacrylate, ester of 2 mm , 7.0 kg of a powdery one of fumaric, maleic, crotonic and itaconic acid. Copolymer of 80 percent by weight of vinyl - The mixing ratio of both or more chlorides and 20 percent by weight of ethyl maleic acid monomers can be mixed with 3.0 kg of methyl methacrylate, the 0.05 kg of the chemical and technical properties of the 50 isopropyl peroxide dicarbonate to be produced, depending on the desired mechanical properties , thermoplastics can be varied. In principle, the powdery copolymer is also characterized with regard to other monomeric liquids besides the above-mentioned grain size in that 70% are used if they can be polymerized quickly and sufficiently completely through the DIN sieve 40, 25% through the DIN sieve 60 are. go through it and the K value according to Fikentscher The properties of the polymerizable 55 56 is. The entire amount of the monomer becomes molding compound to be produced. Finished parts can be ^{sprayed into a mixer under a pressure of 3 kg / cm 2} within 5 minutes, particularly with regard to the mechanical and technical aspects. According to the niche properties as well as with regard to the mixing, the temperature in the mass has risen ^{from 18 to resistance to the influence of 33 ° C.} The easily flowing Gra-corrosive agents due to the addition of crosslinking material are discharged and migrate in one with a polymer and fillers. iron barrel lined with ethylene foil under lock and key. Examples of crosslinking agents are: stored.

Esters and amides of acrylic, methacrylic acid,. · \ Y

Maleic or fumaric acid, the two or more poly- example
have merizable groups, e.g. B. Ethylene glycol 65 100 g of the granules prepared according to Example 1

dimethacrylate, di-, tri- and tetraethylene glycol are put on a press in a 3 mm thick steel

methacrylate, methylene dimethacrylate, acrylic acid and frame filled, the internal dimensions of which are 20Ox

Methacrylic anhydride, divinylbenzene and triallyl are 200 mm and at 65 ⁰ C and under one pressure

of 40 kg / cm ² pressed into a plate within 3 minutes. The plate is colorless, crystal clear and has a residual monomer content of 0.2%.

Example 3

100 g of the prepared according to Example 1 and stored under lock and key at room temperature for 8 weeks Granules are processed according to Example 2 on the press to form a plate. A crystal clear, colorless plate with a residual monomer content of 0.2%.

Eg game 4

From a mixture of 30% asbestos powder and 70% of the granules produced according to Example 1, according to Example 2 produced a plate on the press. The pressing temperature in this example is 75 ° C. The board is characterized by its high scratch and flame resistance and has a residual monomer content of 0.13%.

Example 5

. According to Example 1, 7.0 kg of pulverulent emulsion polymer made from polymethyl methacrylate are mixed with 3.0 kg of methyl methacrylate containing 0.05 kg of acetylcyclohexanesulfonyl peroxide in dissolved form in a fluid mixer. With regard to its grain size, the emulsion polymer consists of 60% components which pass through the DIN sieve and 40 to 40% components which pass through the DIN sieve 60. The K value of the emulsion polymer is 72. 1.6 kg of the granules obtained are placed in a 3 mm thick frame, the internal dimensions of which are 450 × 450 mm, on the press under a pressure of 35 kg / cm ² and a temperature of 65 ^° C pressed within 3 minutes to form a sheet that is colorless ίο and crystal clear and whose physical properties correspond to those of commercially available cast acrylic glass.

Example 6

To produce a resin-monomer mixture, a powdered copolymer with a K value of 70, consisting of 70% styrene and 30% acrylonitrile, with a mixture of monomers of the same qualitative and quantitative combination

ao settlement mixed, and the mixture is rolled out on the roller at room temperature to form a skin. The fur is cut into two equal parts and one on both sides between the two halves A wooden panel sprayed with a polyvinyl acetate dispersion was laid. The one covered on both sides by the fur Wood panel is processed according to Example 2. A coating of high solvent resistance is obtained.

Claims (1)

1 2 Sable molding compound can be produced by claim: that a powdery, resinous component with a polymerizable monomeric compound, in Process for the production of a storable one which the resin is soluble or swellable, and which contains a polymerizable molding compound of 60 to 80 Ge 5 initiator dissolved, which decomposes below room temperature weight parts of one or more powdery temperature into radicals, in such a quantity-polymers or polycondensates and 40 to a ratio is mixed that a free-flowing, form-20 parts by weight of one or more monomeric elastic gel granules is formed.
Liquids in which the resins are at least swell- The subject matter of the invention is a method of manufacture, as well as 0.2 to 2.0 percent by weight, based on the production of a storable, polymerizable compression molding on a resin-monomer mixture of one or more masses of 60 to 80 Parts by weight of one or more initiators, by mixing the above-mentioned powdered polymers or polycondensates and constituents in such a way that during mixing 40 to 20 parts by weight of one or more monoeine temperature of 35 ° C in the mass of non-meric liquids in which the Resins is at least exceeded and a granulate is obtained that is swellable, and 0.2 to 2.0 percent by weight, which alone in granulate form or after being drawn onto the resin-monomer mixture is a dense mixture that can be cutted into an air-free mixture several initiators by mixing the said Beauf components of the extruder in the heat and under pressure in such a way that ge during mixing formed and cured by polymerization can ^{not exceed a temperature of 35 0} C in the mass, characterized in that ao steps and a granulate is obtained, which is mixed for the components in such a quantity alone in granulate form or after compression to ratio are that an air-free, cuttable mixture is spontaneously obtained on the strand form elastic gel granules and molded and press in the heat and under pressure can be cured by polymerization, thereby a) as initiators organic peroxides used 35 characterized that the components in one are mixed below room temperature in such a proportion that Radicals disintegrate, a shape-elastic gel granulate is obtained spontaneously b) the K values of the resins are 56 to 72 and and c) The predominant particle size of the powder _{a) a} , _{s initiators, organic} peroxides used, is less than 150 microns for resins. 30 ^^ _{the low} (for half room temperature in Radicals disintegrate, b) the K values of the resins are 56 to 72 and c) the predominant particle size of the powdery Resins is less than 150 microns. OJ The Italian patent 573 077 describes the fact that a resin-monomer mixture with a process for the production of moldings from a polymerisation initiator, which is below room polymerisable molding compound, which then breaks down into radicals at room temperature, is characterized by, that two monomer-containing monomers can be stored for months is surprising and polymerization products, one of which was one or 40, could not be foreseen. It is assumed that several polymerization initiators and the other due to a cage effect, due to the gelein or several polymerization accelerators ent- Character of the resin-monomer mixture, the initiation, by machine to a polymerizable molding compound ation of the monomer by recombination of the combined and in one Form is prevented by polymerization in the initiator radicals.
Heat and pressure hardened and demolded 45 Da according to the invention in the manufacture of the. polymerizable molding compound initiators used The need to be two components on the that below room temperature in radicals Having to mix a roller to disintegrate a polymerizable, it is to avoid a premature poly molding compound to obtain a process that is necessary from the polymerisation of the monomers that when Fabric processing has to be done as a 50 mixing of the initiator-containing monomer with the decisive disadvantage of this process- powdery resinous component spontaneously placed. Experience has shown that art gelation takes place. The speed of the mind ff processor is not ready to this mixing process, formation naturally depends on the chemical powder is laborious and the careful adherence to the composition of the powdery resinous Komvoigeschritten Processing conditions requires, 55 ponente, of their grain size distribution and the to take over. middle, by the K-value according to Fikentscher The object of the present invention is a marked molecular weight ab. K values and grain travel for the production and processing of a storage size distribution that causes spontaneous gelling during capable polymerizable molding compound from a liquid mixing of the components must allow for monomeric compound and a powdery, 60 each resin-monomer mixture determined experimentally resinous polymer or polycondensate or are. The monomer content of the mixture has a a natural resin that has the above-described post-influence on the physical nature of the gel parts of the method according to the Italian patent and must be dimensioned according to the invention so that 573 077 avoids and that, in particular, a gel with a high degree of elasticity is created. The a monomer-containing resin without inclusion 65 the most favorable mixing ratio is the preferred one Mixing process directly on the press to appropriately monomer systems around 20 to Process moldings. . . 40 parts of monomers to 80 to 60 parts of resin. for It has been found that a storable polymeric production of the mixture from the liquid mono-