| abstract |
Thermoformable and chemical resistant polymer blend useful for the preparation of internal coatings for refrigerators and freezers, comprising: A) 45 to 70 parts by weight of an impact modified monovinylidene aromatic polymer containing 1 to 25 percent by weight of a rubber, and from 75 to 99 percent by weight of a monovinylidene aromatic polymer matrix of a molecular mass (Mw) between 50,000 and 400,000, said percentages by weight being based on the weight total of the impact modified vinyl aromatic polymer; B) from 15 to 40 parts by weight of an olefin polymer chosen from the group composed of homopolymers of ethylene or propylene and copolymers of ethylene with one or more C4-8 alpha-olefins; and C) from 5 to 25 parts by weight of a polymer promoting compatibility, designed to increase the adhesion at the interface between the components A) and B), the components A) and B) or the components A ), B) and C) being present in said mixture in the form of reciprocally continuous phases, and the sum of A), B) and C) equivalent to 100 parts. |