Thermoplastic elastomeric composition containing vulcanized rubb

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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521 41, 521 44, 524376, 524378, 524528, 525232, C08L 700, C08L 906, C08L 900, C08L 2306

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043861822

ABSTRACT:
Thermoplastic elastomeric compositions are prepared by mixing comminuted vulcanized rubber having a mean particle size of below 1.5 mm with a thermoplastic olefin or diolefin polymer, particular polyethylene, at a weight ratio of from 1:3 to 3:1, and with a non-ionic surfactant in an amount of 0.1 to 5 wt. % referring to the total amount of polymers. The addition of a non-ionic surfactant greatly improves the bonding between the two main components, thus yielding compositions of a very low level of porosity and improved mechanical properties, particularly superior thoughness.
The compositions can be moulded or extruded to a variety of products, such as profiles, roofings, fencing posts, pallets, and also shoe sales, saddle covers, solid tires, sprinkling funnels, etc.

REFERENCES:
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patent: 2958671 (1960-11-01), Keskkula et al.
patent: 3404108 (1968-10-01), Regenstein et al.
patent: 3489710 (1970-01-01), Bonotto et al.
patent: 3836695 (1974-09-01), Strecker et al.
patent: 4130534 (1978-12-01), Coran et al.
Martin, Robert W., The Chemistry of Phenolic Resins, John Wiley & Sons Inc. (1965), p. 4.

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