DE1694462C3 - Molding compounds. Elimination from: 1570789 - Google Patents

Description

The bending stress was measured on samples 51 mm long and 12.7 mm wide, which had been cut from a sheet 3 mm thick made by pressing. The samples rested on two slides 38.1 mm apart. In the center thereof a sufficient load has been applied to flex the samples at a rate of 45 ⁷ mm / min. The bending rupture stress was calculated by multiplying the stress at the moment of rupture by the factor: (1.5) * (38.17 / (12.7) * (3) ² = 0.5.

Vicat fully He- ( ⁰ C) instruction 108 rubber Point 1/10 110 cc) Acrylonitrile / butadiene, mixed polymer 101 109 (33: 67 mole percent) Butadiene / methyl methacrylate, mixed 104 108 polymer (75:25 mol percent) 110 Ethylene / ethyl acrylate, copolymers 97 sat (40: 60 mole percent) 105 Butyl rubber, mixed polymer 101 106 Ethylene / vinyl acetate, copolymer 103 (55: 45 mole percent) Polyethyl acrylate 95 Acrylonitrile / butyl acrylate, mixed poly 98 merisat (13:87 mole percent)

example 1

A thermal mixture, which was obtained from 6 mol percent N-phenylmaleimide, 75 mol percent acrylonitrile and 19 mol percent isobutene, had a softening point above 100 ° C. and a flexural strength of 18 kg / mm ² , was mixed with various types of rubber on a steam-heated roller. The various types of rubber, of which 35 g each were mixed with 100 g of the thermal copolymer, and the softening points of the mixtures obtained are given in the table above.

Mixtures with the following types of rubber were also prepared, each in a quantity from 42 g to 100 g thermal polyester were used:

a) nitrile rubber with a number of carboxy groups;

b) acrylonitrile / butyl acrylate, copolymer
(20:80 mole percent);

c) Acrylonitrile / butadiene, copolymer
(40: 60 mole percent), crosslinked;

d) neoprene;

e) offset with 1 ° / ₀ divinylbenzene polybutadiene and

f) Ethylene / methyl methacrylate, copolymer
(48: 52 mole percent).

* ⁵ B eis ρ ie 1 2

The latex of a thermal copolymer from 5 mol percent N-phenylmaleimide, 75 mol percent acrylonitrile and 20 mol percent isobutene was mixed with

various amounts of an acrylonitrile / butadiene (46: 54 Mole percent) rubber latex blended, and the resulting latex blends were worked up, to make products containing 5, 10, 15 and 20 weight percent rubber. These products

were deformed under pressure and the moldings had Vicat softening points of 111, 112, 108 or 107 ° C.

Claims (3)

ι 2 an N-arylimide of bicyclo [2.2, l] -5-hepten-2,3-di- claim: carboxylic acid is used. This comonomer can be produced by reacting N-aryl maleimide with cyc.o molding compounds consisting of a mixed poly pentagen. The production of the merisate A, which has been produced from 5 comonomers, is fairly complex. 1. Ibis 99 mole percent acrylonitrile, in which this precipitation remark 2. 1 to 99 mole percent N-arylmaleimide, the parent report heard from us and optionally acrylonitrile polymers with improved deformation 3. 1 to 98 mole percent of an olefin, properties, a high expansion point nm and B: a kaulschukarti «en elastomer, generally in the order of magnitude; of 100 C and consisting either of a diene rubber, one above) and a valuable physical egg. "N eesaturated acrylate rubber or ethylene mix can be obtained, if one. Acrylic with polymfrisatkauischuk. Certain N-substituted males are mixed-polymerized by I-re, - ^{V y} radical catalysis. This mixed I ₅ polymers contain 1 to 99 mole percent acrylonitrile and 99 to 1 mole percent of at least one N-Au! - maleinimids. The preferred interpolymers contain 40 to 90 mole percent acrylonitrile and 60 to Subject of patent application P 1 570 789.8-44 10 mol percent of at least one N-Arylmale.nimids are copolymers consisting of 1 to 99 mol percent 20 and are produced by copolymerization Ν -, * - ylmaleimide. whose N-aryl substituents are none of a monomer mixture which contains öü to y MoI- have a basic character, and from 99 bi> 1 mole percent acrylonitrile and 8 to 40 mole percent min- percent acrylonitrile. According to a preferred at least one N-aryl maleimide containing one In the embodiment, the copolymers consist of a free radical catalyst is used. 1 to 98 molar percent acrylonitrile, 1 to 98 mol percent: * 5 There are further copolymers described the N-acrylic maleimide and from 1 to 9 "mol percent" _and 1 to 98 mol percent acr, .nitrile, from 1 to 98 MoI-Oiefinen percent of at least one Ν-Ary..naleinimids and off Polyacrylonitrile can consist of 1 to 98 mol percent of at least one olefin by polymerization. Made in bulk, in solution or aqueous diversion, the total amount of the ingredients being 100 moles and a useful fiber-forming material being 30 percent. The preferred polymers, with a high softening point and good retention, have 60 to 90 mol percent acrylonitrile and 1 to 15 molar resistance to numerous chemicals. The percent N-aryl maleimide and 5 to 30 mol percent extensive use of this material / ur olefin and can be produced by polymer working in molten form, for example when sating a mixture that is 1 to 10 mol percent melt spinning or for injection molding processes, is at least 35 in each case ^ "cs N-Arylmalemimids 15 to 30 Modoch at least one olefin and 84-60 MoI in limited by its poor thermoplasticity even percent temperatures of 25O ⁿ C. This percentage contains acrylonitrile, whereby this entire material only excludes 100 mol% constituents when high pressures are applied.
and deformable at temperatures at which degradation can now take place. In addition, the additional incorporation of synthetic rubber-like products made therefrom is quite brittle and polymers splinter into the abovementioned copolymers, for example when they are only obtained by molding compounds with improved properties 2 kg / mm ² and rarely more than 4 kg / mm ^{2 in} terms of. These rubber-like polymers are examined for ^{their flexural strength at 20 ° C.} or copolymers are diene rubbers that It has already been suggested that the self-45 saturated acrylate rubbers and ethylene mixed poly- Properties of acrylonitrile polymers thereby "to merisate rubbers. The rubber material imparts Modifi.iieren that in the case of polymerization mixing of the copolymers mentioned, an increased polymerizable monomers are added. With- ■ toughness, which improves impact resistance games of such monomers are: vinyl chloride, vinylidene will. But the softening point is not chloride and butadiene. It is true that the products from 50 are significantly reduced. such copolymers less brittle and if both the acrylonitrile copolymer as are easier to deform, but they also have the rubber material available as latex generally have the disadvantage that they are low (for example, as products of an emulsion Softening point and a low modulus of polymerisation), then the components do not have to sit. So the copolymers generally hold 55 to be isolated, but the latices can be used directly Temperatures of more than 100 ⁰ C are not mixed and mixed. After adding the desired do not give hard objects when pressing. Additives such as B. Stabilizers and antioxidants Another disadvantage of acrylonitrile homopolymers is that the mixture leads to coagulation. sate consists in their poor dyeability. Avoidable by placing it in a dilute electrolyte solution improvement of the dyeability was poured in the German 60, such. B. in an aluminum sulfate or Patent specification 1 040 243 proposed with the acrylic calcium chloride solution, whereupon the product isolated nitrile to copolymerize an N-pyridyl maleimide. unu is washed with hot water. The above-mentioned poor processability of the other hand, the two components However, acrylonitrile homopolymers are thereby also odci in the melt on heated rollers not improved. ⁶ 5 are mixed in an extruder. In the US Pat. No. 2,701 (> 720 is a method. The invention is explained in more detail in the following examples for the production of acrylonilmischpolmischpolmisate. Unless otherwise stated, all parts are given in which, among other things, aL · comonomer Expressed in parts by weight