DE1301504B - Molding compositions of mixtures of a poly-1,3-diene and a polyamide - Google Patents

Description

ϊ 301 504

1 2

It is known that when mixing thermo- of phosphoric acid. The masses can self-plasticize Plastics of different chemical nature also contain mixtures of metal salts. Composition receives masses which come from the carboxylic acid salts in particular in their structure are inhomogeneous. So you can z. B. from polydienes and those of carboxylic acids with 2 to 18 carbon atoms in Polyamides by mixing in thermoplastic materials. Masses with particularly advantageous properties obtained only inhomogeneous molding compounds, which are obtained from salts of barium, magnesium, only conditionally suitable as plastics. Aluminum, manganese and zinc, being the zinc salts

It has now been found that molding compositions from Ge are particularly preferred,

Mixing 95 to 40 percent by weight of a poly- Also, the masses can contain vulcanizing agents

I, 3-diene and 5 to 60 percent by weight of a poly io and fillers contain. The possible amids then have particularly advantageous properties, the ability to vulcanize the moldings produced from the masses when they vulcanize, based on 100 parts by weight of the polymer. So are z. B. zinc oxide, carbon black, rengemisches, 0.5 to 10 parts by weight of a salt of silicon dioxide and asbestos as a filler. As a volcanic metal of the II. And III. Main group or the sationshilfsmittel serve sulfur and the usual

II. Or VII. Subgroup of the Periodic System 15 vulcanization accelerators, z. B. based on thio and an aliphatic carboxylic acid, hydrofluoric acid and / carbamates, sulfenamides or derivatives of phosphoric acid. Benzthiazoles.

It is surprising that the molding compositions according to the invention can be homogeneous according to various molding compositions, can be obtained properly and without running. So you can z. B. first segregation according to the methods for processing 20 mix the polymers in the thermoplastic state to form moldings and then incorporate the metal salts into the mixture. Also the masses can bring as a result of it. It is also possible to vulcanize concentrates made of a metal-poly-1,3-diene component. The moldings produced from the salts and one of the polymers and these molding compounds are mixed with the other polymers. Likewise, it can also be vulcanized, have excellent 25 possible, the molding compounds by dissolving the properties of the components with regard to mechanical strength parts in a solvent and evaporation of the solvent and solvent resistance. Obtainable by choosing the solvent.

Polydiene and the polyamide component and the The masses are suitable for the production of shape-mixing ratios or the type and amount of the body, such as. For example, as machine parts in the Techzugesetzten metal salt, it is possible that equity find 30 technology use. Likewise, household chores of the masses can vary within wide limits to articles and other utensils from the. So have z. B. masses with a behaving molding materials are produced. In addition, rubber-elastic masses for the production of films and fibers have properties and masses with a relatively high level of properties and masses with a relatively high proportion of polydiene.

Polyamide content has good heat and solvent resistance. The parts mentioned in the examples are weight stability. In general, it turns out that the parts, the percentages are percentages by weight. Solvent resistance and the flame retardancy of the molding compositions increase with the content of the metal salt.

Under polydienes according to the invention are 40 90 parts of polybutadiene having a K value 102 (0.5% in

Homo- and copolymers of 1,3-dienes with toluene) and a cis-1,4-proportion of 94% were on

stand. For example, the masses can be made of polymers from a roller at 120 ° C with 2.5 parts of zinc stearate and

Butadiene, chloroprene, isoprene, 2-nitrile butadiene, 10 parts of a mixed polycondensate of hexamethylene

2,3-Dimethylbutadiene or from 2-phenylbutadiene ent- lenediamine-adipic acid and caprolactam with a

keep. Also, copolymers of these mono- 45 melting point of about 185 ° C was added. To

meren in question. In addition to a rolling time of 15 minutes, a homogeneous one was produced as comonomers

the z. B. olefins such as ethylene, propylene, also I-Ni product that showed rubber elasticity, trilbutadiene, 2,3-di-chlorobutadiene, styrene, α-methyl vulcanization under standard conditions: 100 parts

styrene, acrylonitrile or acrylic esters, such as acrylic mixture, 50 parts of carbon black, 2 parts of stearic acid, 3 parts

methyl, ethyl and n-butyl esters or the 50 zinc oxide, 5 parts of unsaturated cracking oils, 1.5 parts

homologous methacrylic acid ester. Preferably ent-phenyl - /? - naphthylamine, 1.75 parts sulfur, IT part

hold the masses from 85 to 56 percent by weight, benzothiazyl - 2 - diethylsulfenamide. Vulcanization:

based on the total polymer content, of polydiene. 40 minutes at 149 ° C. The following values were

Of the polyamides, those in particular are suitable:
polymer used in plastics processing 55 _. ... j τ- * 1 + jm. um ^ c-yenA sate, such as that of caprolactam, pyrollidone, laurine- test of strength and elongation according to DIN53504:

lactams or aminoundecanoic acid lactams. Likewise strength 212 kg / cm ²

the polycondensates of dicarboxylic acid and elongation 435% are suitable

Diamines, such as adipic acid polycondensate

and hexamethylenediamine. Mixtures of 60 polybutadiene without polyamide can also be used:

of polyamides or mixed condensates used strength 142 kg / cm ²

will. Based on the total amount of polymer elongation 360 ° /

the molding compositions advantageously contain 15 to 35 Ge ⁰

weight percent of polyamides. . . . ..,

The molding compounds also contain salts of 65 B e 1 s ρ 1 e 1 2 to 6

Metals of II. And III. Main group or II. The procedure was as described in Example 1,

or VII. Subgroup of the Periodic System and however with variation of the test conditions. It

aliphatic carboxylic acids, hydrofluoric acid and / or the following products were obtained:

Claims (1)

Polydiene Metal salt Type and amount polyamide Mixing time (Min.) Mixed temperature rature (° Q Product properties elongation Strength (kg / cm ² ) Initial polydia Strength (kg / cm ^s ) strain Isoprene-acrylonitrile-zinc copolymer stearate (Acrylonitrile content: 25 2 parts by weight)
K value 140
90 pieces Polybutadiene Manganese (1,2-vinyl content: 92) fluoride K value 55 5 parts 60 parts Magnesium chloroprene-styrene copolymer (styrene content: 25 percent by weight) 3 parts K value 106
85 pieces Butadiene-acrylic acid-aluminum-butylesterium oleate copolymer 2 parts (40 percent by weight ester) K value 84.5 90 parts Butadiene-acrylic acid-barium tert-butyl ester phosphate copolymer 4 parts (25 percent by weight ester) K value 96
60 parts Polyamide based on caprolactam 10 parts Condensate of hexamethylenediamine / adipic acid / diaminodiphenylmethane 10: 10: 4 40 parts Polyamide based on caprylic lactam 15 parts Hexamethylenediamine / sebacic acid condensate, 10 parts Condensate from hexamethyleneiminoacetic acid / 2,5-diketopiperazine 40 parts 10 25th 10 30th 110 100 130 120 165 230 390 196 206 220 245 218 340 360 375 195 23 179 145 150 280 The following table shows the measured values for strength and elongation according to DIN 53504, as is the case with the rubber polymers of Examples up to 6 alone (column 2), with the rubber mixtures + Polyamide without metal salt content according to the invention (column 3) and on the identical mixtures can be determined with the metal salt content. example rubber
strength
(kg / cm ² ) /
strain
(%) Rubber + polyamide
without I with
Metal salts | Metal salts
Strength (kg / cm ² ) / elongation (%) 1 142/360 149/380 X 212/435 2 195/350 205/340 χ 230/390 3 23/105 74/109 χ 196/218 4th 179/273 175/260 χ 206/340 5 145/275 160/285 χ 220/360 6th 150/280 135/290 χ 245/375 45 The inventive molding compositions compared with those containing no metal salts significantly improved values of strength and elongation. 50 55 6o * = no homogeneous mixtures. Claim: Molding compositions of mixtures of 95 to 40 percent by weight of a poly-1,3-diene and 5 to 60 percent by weight of a polyamide, characterized in that it, based on 100 parts by weight of the polymer mixture, 0.5 to 10 parts by weight of a salt of a metal II. And III. Main group or the II. Of the VII. Subgroup of the periodic system and an aliphatic Contain carboxylic acid, hydrofluoric acid and / or phosphoric acid.