Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1984-09-20
1985-07-16
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 841, 521139, 521140, 525 93, C08J 914
Patent
active
045297401
ABSTRACT:
Hot melt compositions are disclosed from which foamed products having a fine and uniform void structure therein can be obtained. The compositions include a thermoplastic polymer preferably an elastomer such as a styrene-butadiene block copolymer, and a small amount of a salt of a sulfonated styrene polymer. Plasticizing processing aids, tackifying agents and antioxidants can be included in the compositions, as well as in addition surfactants such as dodecylbenzene sulfonate. The composition can be mixed with gaseous blowing agents by suitable means and dispensed to produce foamed products suited for example as sealants in closures for containers.
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Baker William L.
Channing Stacey L.
Foelak Morton
W. R. Grace & Co.
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