Resources Contact Us Home
Method of manufacturing polystyrene foam with polymer processing additives

Image Number 14 for United States Patent #8119701.

Disclosed is a method for making polystyrene foam which utilizes one or more atmospheric gases, particularly combinations of HFCs and CO.sub.2, as the blowing system in combination with a polymer processing aid (PPA), typically an ester that is relatively non-volatile at the extrusion temperature range. The blowing system and the PPA may both be introduced into the molten thermoplastic polystyrene resin or the PPA may be incorporated in the solid source polystyrene resins. The resulting foams will typically exhibit improved dimensional stability at ambient temperatures.

  Recently Added Patents
Devices and methods for the production of coaxial microfibers and nanofibers
Electric train drive control device
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Magnetic recording medium, information storage device, and method of manufacturing magnetic recording medium
System and method for locating, tracking, and/or monitoring the status of personnel and/or assets both indoors and outdoors
Systems, methods, and computer readable media for providing information related to virtual environments to wireless devices
Communication device
  Randomly Featured Patents
Real address accessing in a coprocessor executing on behalf of an unprivileged process
Semiconductor device manufacturing method, semiconductor device manufacturing apparatus, control program and computer storage medium
Method and system for managing data traffic in wireless networks
Reducing acoustic noise in wireless and landline based telephony
Fullcolor LED display system
Stairs rail connector
Virtual firmware smart card
Refrigeration system with a charging loop
Object identification between non-overlapping cameras without direct feature matching
Image sensor based optical reader