CHEWING GUM CONTAINING SOLUTION STYRENE BUTADIENE RANDOM COPOLYMER ELASTOMER
A chewing gum contains a water-insoluble gum base portion containing a solution-polymerized styrene-butadiene random copolymer elastomer which is cud-forming and chewable at mouth temperature; a water-soluble bulk portion; and at least one flavor component.
1 . A gum base comprising a solution-polymerized styrene-butadiene random copolymer elastomer which is cud-forming and chewable at mouth temperature.
2 . A gum base of claim 1 which contains a softener, an emulsifier, and a filler.
3 . A gum base of claim 2 which contains at least one elastomer plasticizer and a plastic resin.
4 . A gum base of claim 1 , which contains between 2 and 30 wt. % elastomer.
5 . A gum base of claim 1 , in which the solution-polymerized styrene-butadiene random copolymer elastomer contains between 25 and 50 wt. % polymerized styrene monomer.
6 . A gum base of claim 1 , in which the molecular weight of the solution-polymerized styrene-butadiene random copolymer elastomer is between 300,000 and 750,000.
7 . A gum base of claim 1 , in which the Mooney Viscosity (ML 1+4 at 100° C.) of the solution-polymerized styrene-butadiene random copolymer elastomer is between 50 and 75.
8 . A gum base of claim 1 in which the Mooney Viscosity (ML 1+4 at 100° C.) of the solution-polymerized styrene-butadiene random copolymer elastomer is between 57 and 67.
9 . A gum base of claim 1 in which the modulus of the gum base is 100 to 600 kPa at 40° C.
10 . A gum base of claim 1 , in which the solution-polymerized styrene-butadiene random copolymer elastomer comprises at least 25 wt. % of the elastomeric component in the gum base.
11 . A gum base of claim 10 in which the elastomeric component in the gum base also contains butyl rubber, polyisobutylene, emulsion SBR, or block solution SBR.
12 . A chewing gum comprising:
a) a water-insoluble gum base portion comprising solution-polymerized styrene-butadiene random copolymer elastomer which is cud-forming and chewable at mouth temperature;
b) a water-soluble bulk portion; and
c) at least one flavor component.
13 . A chewing gum of claim 12 which contains a binder, water-soluble softeners, and gum emulsifiers.
14 . A chewing gum of claim 12 which contains 10 to 50 wt. % gum base.
15 . A chewing gum of claim 12 , in which the gum base contains 5 to 20 wt. % elastomer.