THERMOPLASTIC RESIN COVERING COMPOSITION FOR PARTICLES DESIGNED FOR FORMING STYROFOAM CONTAINERS Russian patent published in 2008 - IPC C08J9/22 C08J9/224 C09D201/08 C08L91/06 C08J9/228 B32B5/16 C09D129/12 B29B9/16 B65D1/10 

FIELD: chemistry.

SUBSTANCE: invention relates to the thermoplastic resin particles designed for forming the Styrofoam containers. The foaming thermoplastic resin particles are described, consisting of polymer obtained from the vinyl aromatic monomers, and bearing on their surface the covering composition at approximately 0.005 to 2.0 mass percent at particle mass. At that, the said covering composition includes the components selected from the group consisting of 1) liquid part and 2) solid part; and the said liquid part contains: a) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 200 to 800; the said solid part contains the components selected from the group consisting of b) from approximately 0.01 to 1.0 mass percent at a mass of the polyolefin wax particles; c) from approximately 0.01 to 0.6 mass percent at a mass of the particles of the metal-containing salt of the higher fatty acids; d) from approximately 0.01 to 0.8 mass percents at a particles mass of polyethylene glycol with the apparent molecular weight from approximately 900 to 10000; and e) from approximately 0.01 to 0.1 mass percent at a mass of the fatty bisamide particles; and their combinations. Also, the styrofoam container and the formed article produced from the said foaming particles, are described. The covering composition for the said particles and the method for improvement the leakage resistance in the styrofoam container, are described.

EFFECT: prevention of oil and/or fat-containing liquid and food leakage, edge firmness improvement.

31 cl, 10 tbl, 10 ex