06103153 is referenced by 29 patents and cites 8 patents.

Compositions and processing conditions are disclosed for the production by rotomolding of polypropylene foams, hither to satisfactorily produced only by injection molding and extrusion molding. Rheological properties of the polypropylene resin, processing conditions and choice of composition of the chemical blowing agent were found to play important roles in obtaining high quality polypropylene foam structures. High strength fine-cell polypropylene foams could in particular be formed by first melt compounding a suitable chemical blowing agent with the resin under conditions which allow for homogeneous mixing without appreciable decomposition of the blowing agent.

Title
Production of foamed low-density polypropylene by rotational molding
Application Number
9/324047
Publication Number
6103153
Application Date
June 2, 1999
Publication Date
August 15, 2000
Inventor
Benjamin Zhang
40 Mohawk Road East Apt. 316, Hamilton, Ontario
CA
Salvatore D Uva
36 Beechwood Avenue, Brantford, Ontario
CA
Remon Pop Iliev
801-25 Warrender Ave., Etobicoke, Ontario
CA
Fangyi Liu
810-30 Charles Street West, Toronto, Ontario
CA
Guobin Liu
1545 Ouelleppe Ave., Apt. 202, Windsor, Ontario
CA
Chul B Park
95 Prince Arthur Avenue, #521, Toronto, Ontario
CA
Agent
Ridout & Maybee
IPC
C08J 9/34
B29D 9/00
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