Abstract: Thiocarbonate compounds are reacted with various polyols to introduce hydroxyl end groups thereto which can be subsequently reacted with urethane forming compounds to form various polyurethanes including block copolymers thereof.

Abstract: An emergency vehicle transmits a Vehicle Present Signal when in transit on public roads responding to an emergency. The signal can include information relating to the type of emergency vehicle, local highway and terrain data, and the location, speed and direction of travel of the emergency vehicle. When the Vehicle Present Signal is detected by a first vehicle, a functional circuit within the first vehicle calculates the distance between the emergency vehicle and the first vehicle. If the vehicles are within a predetermined distance, a warning signal activates one or more warning systems, thereby notifying the driver of the first vehicle that an emergency vehicle is in the vicinity. A dead-band defined by first and second predetermined distances can be incorporated to prevent rapid cycling of the warning signal.

Abstract: A system and method delivers an audible tone to an unidentified caller who places a call to a subscriber to a privacy screening service with special information tones (SITs). The service is initiated when an unidentified caller places a telephone call to a subscriber. After the caller enters the telephone number of the subscriber, the service places a query to an SCP. The SCP determines the action to be taken for a call to a subscriber to privacy screening with SITs. If the called party is a subscriber to privacy screening with SITs, a SIT is generated, a privacy screening message is played and the call is handled as in known privacy screening services.

Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.