公开(公告)号：US07972695B2

公开(公告)日：2011-07-05

申请号：US13004062

申请日：2011-01-11

申请人： Jiansheng Tang ,  David Allen Cowan ,  Dennis H. Piispanan ,  Michael T. Williams

发明人： Jiansheng Tang ,  David Allen Cowan ,  Dennis H. Piispanan ,  Michael T. Williams

IPC分类号： A23L3/00 ,  C08L112/08

CPC分类号： C08J9/224 ,  C08J7/047 ,  C08J2325/02 ,  C08J2423/00 ,  C08J2471/00 ,  C08J2491/00 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2998

摘要： Expandable or pre-expanded thermoplastic particles, e.g. polystyrene particles, used to form foam containers e.g. cups, bowls, are coated with a coating composition comprising a liquid part consisting of a) liquid polyethylene glycol with an average molecular weight of 200 to 800; and a solid part comprising components selected from the group consisting of b) polyolefin wax, e.g. polyethylene wax, c) a metal salt of higher fatty acids, e.g. zinc stearate or calcium stearate; d) polyethylene glycol with an average molecular weight of 900 to 10,000; and e) a fatty bisamide or fatty amide, e.g. ethylene bis-stearamide; and combinations of b) through e). The coating composition prevents or resists leakage of liquids and foods with oil and/or fatty components and improves the rim strength and ATF properties of foam containers.