Brominated Isobutylene Paramethyl-Styrene Elastomer Curing Bladders

• Main Authors: Shanawas, Ck, Tanaka, Yoshiyuki, Mandot, Sushil K, Bisoi, Manomohan
• Format: Patent
• Language: English
• Published: 24.06.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A composition can comprise: an elastomeric composition formed into a curing bladder, the elastomeric composition comprising: 100 parts per hundred parts rubber (phr) of an elastomer comprising a C4-C7 isoolefin, a non-halogenated alkylstyrene, and a halogenated alkylstyrene; 1 phr to 7.5 phr alkyl phenol formaldehyde resin; and 0.5 phr to 5 phr mercaptobenzothiazole disulfide. A related method of making a tire curing bladder comprises: mixing 100 phr of an elastomer composition comprising a C4-C7 isoolefin, a non-halogenated alkylstyrene, and a halogenated alkylstyrene, 1 phr to 7.5 phr alkyl phenol formaldehyde resin, and 0.5 phr to 5 phr mercaptobenzothiazole disulfide; and molding and curing the mixture into the shape of a tire curing bladder.