Thermoplastic material

专利摘要:
1530534 Elastomeric thermoplastic compositions MONSANTO CO 16 Dec 1976 [17 Dec 1975] 52507/76 Heading C3M Compositions comprising (1) 25-45 parts crystalline thermoplastic polyolefin resin and (2) 75-55 parts vulcanized high unsaturation diene rubber particles dispersed throughout the resin and having a maximum particle size of 50 Á, may be prepared by mixing resin and rubber at a temperature sufficient to soften the resin and continuing to mix while adding curatives for the rubber, or by dispersing finely divided vulcanized rubber particles in the softened resin. The resin may be polyethylene or polypropylene. The rubber may be natural, polybutadiene, polyisoprene, butadiene/styrene or butadiene/nitrile rubber, which may be cured by sulphur or phenylene bismaleimide cure systems, optionally peroxide activated, or by high energy radiation. 'The compositions may be used to make tyres, belts, gaskets, hoses and mouldings, and as modifiers for thermoplastic resins.
公开号:SU1533626A3
申请号:SU762430848
申请日:1976-12-16
公开日:1989-12-30
发明作者:Йочер Коран Оберт；Пурушотамдес Патель Раман
申请人:Монсанто Компани (Фирма)；
IPC主号:

专利说明:

The invention relates to thermoplastic materials that can be used to make various products, for example tires, flexible pipes, gaskets and molded products.
The aim of the invention is to improve the toughness of the material.
The thermoplastic material is prepared by preparing a mixture of diene rubber, polyolefin resin and curatives, followed by stirring the mixture at the temperature of heating until the vulcanization is completed in a Banbury mixer, Brabender mixer or in mixing syringes. The preferred vulcanization temperature range is 180-200 ° C.
One of the options for producing a thermoplastic material according to the invention is to pre-cure rubber in the absence of a resin by a dynamic method, then grinding it to a powder and mixing it with a polyolefin resin at a temperature above the melting point or softening point of the resin.
When this is used, a diene vulcanized rubber with a particle size of not more than 50 μm in the amount of m.ch. and a thermoplastic polyolefin resin in the amount of 30-4.5 5 ma s. h
Polyethylene or polypropylene is used as a thermoplastic polyolefin matrix.
A rubber selected from the group consisting of polybutadiene rubber, natural or synthetic polyisoprene rubber and copolymer rubber based on diene with styrene, vinylpyridine, acrylonitrile or metriconitrile is used as a vulcanized diene rubber.
In tab. 1 shows the performance of a thermoplastic material containing a polyolefin resin and natural rubber.
In tab. 2 shows the performance of a thermoplastic material containing a polyolefin resin and styrene-butadiene rubber.
In tab. 3 shows the performance of a thermoplastic material containing polypropylene and polybutadiene rubber.
In tab. B shows the performance of a thermoplastic material containing polybutadiene rubber and polypropylene using a sulfur-containing vulcanizing system.
In tab. 5 shows the performance of a thermoplastic material containing nitrile rubber and polyethylene.

权利要求:
Claims (3)
[1]
1. A thermoplastic material containing diene vulcanized rubber dispersed in a thermoplastic polyolefin matrix, characterized in that, in order to improve the toughness of the material, a diene vulcanized rubber with a particle size of not more than 50 µm is used with the following ratio of components, wt.h. : Diene vulcanized rubber with a particle size of not more than 50 μm55 70 Thermoplastic polyolefin matrix
[2]
1, Material pop. 1, characterized by the fact that polyethylene or polypropylene are used as the thermoplastic polyolefin matrix.
[3]
3. Pop. 1 material, which is different in that it uses vulcanized diene rubber selected from the group consisting of polybutadiene rubber, natural or synthetic polyisoprene rubber, and copolymer rubber based on diene with styrene, vinyl pyridine, acrylonitrile or methacrylonitrile rubber .
I
Table 1
, -
Note: polyethylene I - blow molding grade polyethylene, polypropylene I - low flow polypropylene; polypropylene II - FDA grade polypropylene.
Tyblitza2
N - (1,3- / imethyl-butyl) -13 - (phenyl) - -p-phenylenediamine (Santoflex 13)
HVA-21,8
Peroxide 10.3
Mixing speed, number of revolutions per min. 100 Mixing temperature, C 180 Forming temperature, C 220
Table3
1.9 M5
1.9 M5
80 225 225
15336268
Continuation of table 3
Thermoplastic material, mac
Nitrile rubber60 Polyethylene I40 Flectol I0.5 MBTS1.8 HVA-2C, 5 Mixing speed, revolutions per min100 Mixing temperature, C180 Molding temperature, C220 Strength at break, kg / cm2179 100% modulus, kg / cm2 C Young modulus, kg / cm21535 Relative elongation at break,% 190 TS / E, kg / cm221
Table
TableB

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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US05/641,547|US4104210A|1975-12-17|1975-12-17|Thermoplastic compositions of high unsaturation diene rubber and polyolefin resin|

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