Toray's pre-vulcanization inhibitor, N-(Cyclohexylthio) phthalimide (CTPI), is used to prevent early vulcanization during heating and molding in the manufacturing process of rubber products such as:

• neumatic tries
• Industrial rubber belts, rubber hoses
• Windshield wipers, rubber shoes

CTPI is produced by Toray Fine Chemicals Co., Ltd. in Japan.