Refrigerator interior liner

Process for preparing a high impact monovinylaromatic polymer to make a refrigerator interior liner, comprising:

• a) forming a polymerizable mixture comprising at least one monovinylaromatic monomer and optionally one or more comonomers,
• b) dissolving at least a viscous rubber of essentially linear structure in said polymerizable mixture to form a rubber containing polymerizable solution,
• c) contacting a free radical initiator and a chain transfer agent with the polymerizable mixture at conditions whereby phase inversion subsequently occurs,
• wherein the chain transfer agent is capable to produce an increase of the rubber to PS phase viscosity ratio within the inversion reactor,
• d) continuing the polymerization of the solution obtained at step c), optionally in the presence of a free radical initiator, until a monovinylaromatic polymer matrix having rubber particles dispersed therein is obtained.

Process for preparing a high impact monovinylaromatic polymer comprising:

• a) forming a polymerizable mixture comprising at least one monovinylaromatic monomer and optionally one or more comonomers,
• b) dissolving at least a viscous rubber of essentially linear structure in said polymerizable mixture to form a rubber containing polymerizable solution,
• c) contacting a free radical initiator and a chain transfer agent with the polymerizable mixture at conditions whereby phase inversion subsequently occurs,
• wherein the chain transfer agent is capable to produce an increase of the rubber to PS phase viscosity ratio within the inversion reactor,
• d) continuing the polymerization of the solution obtained at step c), optionally in the presence of a free radical initiator, until a monovinylaromatic polymer matrix having rubber particles dispersed therein is obtained.