Elastomeric articles with improved fire protection properties
AssigneeFirestone Industrial Products Company, LLC
InventorsMichael C. Howard, Brandon C. Adcock, Hang Li
Life of this patent
Estimating the term…
Abstract
An air spring having an airsleeve, wherein at least one layer of the airsleeve includes the vulcanization product of a composition that includes at least one vuicanizable polymer, a curative, at least one halogenated hydrocarbon wax, and expandable graphite.
Claims19
An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includes
- at least one vulcanizable polymer;
- a curative;
- at least one halogenated hydrocarbon wax;
- and
- expandable graphite, where the total amount of vulcanizable polymer is from about 25 to about 40 wt. %, based upon the total weight of the composition.
An air bellow prepared by a process comprising the steps of:
- (i) preparing a vulcanizable composition that includes at least one vulcanizable polymer, a curative, at least one halogenated hydrocarbon wax, and expandable graphite, where the total amount of vulcanizable polymer is from about 25 to about 40 wt. %, based upon the total weight of the composition;
- (ii) fabricating an uncured air bellow comprising at least one layer that is formed from said vulcanizable composition;
- and
- (iii) at least partially curing the uncured air bellow.
An air spring having an airsleeve, wherein at least one layer of said airsleeve includes the vulcanization product of a composition that includes:
- (i) at least one vulcanizable polymer that is selected from the group consisting of polychloroprene, polychloroprene copolymers, natural rubber, blends of natural rubber and a diene polymer, and combinations thereof;
- (ii) a curative;
- (iii) at least one halogenated hydrocarbon wax;
- and
- (iv) expandable graphite, where the total amount of vulcanizable polymer is from about 25 to about 40 wt %, based upon the total weight of the composition.
Dependencies are inferred from the claim text.