Expandable hollow particles

Details Expandable hollow particles Expandable hollow particles

1997-07-11

1998-11-10

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 60, C08J 920

Patent

active

058345264

ABSTRACT:
Microspheres are described which have a shell of thermally expandable polymer and a hollow interior that contains a fluorinated hydrocarbon that boils at a temperature below the melting point of the polymer, and contains an organic ester or ether or ketone. The ester or ether or ketone improves the quality of microsphere product. The expandable particles are useful in insulation, packaging, for expanding other polymer such as polytetrafluoroethylene, and the like.

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patent: 5528650 (1996-06-01), Delgado et al.
patent: 5536756 (1996-07-01), Kida et al.

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