Synthetic plastic material and a method of making thereof

Details Synthetic plastic material and a method of making thereof Synthetic plastic material and a method of making thereof

2007-05-01

2007-05-01

Mullis, Jeffrey (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S071000, C525S089000

Reexamination Certificate

active

10212061

ABSTRACT:
A method of producing a synthetic polymer blend comprising steps of (i) blending a styrene-butadiene-styrene thermoplastic elastomer (SBS) with a compatibilizer selected from the group consisting of polybutadiene grafted polystyrene resin (HIPS), styrene-hydrogenated-butadiene-styrene (SEBS) and poly-dimethyl-phenylene-oxide (PPO), and dispersing particles of said SBS to a mean particle size of substantially 3 microns or less in diameter, to form an intermediary ingredient, whereinweight⁢⁢of⁢⁢the⁢⁢SBSweight⁢⁢of⁢⁢the⁢⁢compatibilizeris substantially14to 4; and (ii) blending the intermediary ingredient in the step b) with further ingredient(s) including at least general purpose polystyrene (GPPS), and further dispersing the SBS particles, to form the synthetic polymer blend, whereinweight⁢⁢of⁢⁢the⁢⁢intermediary⁢⁢ingredientweight⁢⁢of⁢⁢the⁢⁢GPPSis substantially119⁢⁢to⁢⁢56.

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