METHOD OF MANUFACTURING POLYSTYRENE FOAM WITH POLYMER PROCESSING ADDITIVES
摘要
Disclosed is a method for making polystyrene foam which utilizes one or more atmospheric gases, particularly CO2, as the blowing agent in combination with a polymer processing aid (PPA), typically an ester that is relatively non-volatile at the extrusion temperature range. The blowing agent 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 foam will be substantially free of residual blowing agent and dimensionally stable at ambient temperatures.
申请公布号
CA2626307(C)
申请公布日期
2016.02.09
申请号
CA20062626307
申请日期
2006.10.20
申请人
OWENS CORNING INTELLECTUAL CAPITAL, LLC
发明人
DELAVIZ, YADOLLAH;PATEL, BHARAT;POLASKY, MARK;LOH, ROLAND R.;BREINDEL, RAYMOND M.;WEEKLEY, MITCHELL Z.;RODRIGUES, KLIN A.