Abstract: A light weight, vibration-damping composition having effective amounts of at least one butyl rubber, at least one tackifying resin, at least one pigment and substantially spherical microspheres is disclosed. The present composition has a specific gravity of about 1.0 to 1.2 and has effective damping effects at low temperatures as well as temperatures up to about 60.degree. C. This composition is effective for use in the transportation industry, the building industry, the aerospace industry and the appliance industry.

Abstract: An automated system of integrated computer programs and files facilitates compliance with Chemical Control Laws of different jurisdictions. In one embodiment, the system uses a raw material database file, a formula database file, a manufacturing status database file, a sales status database file, a regulatory worksheet program, and an update program, all residing on a computer system. These files and programs are collectively used to: maintain Chemical Control Law inventories; maintain records of chemical and product Chemical Control Law registrations; provide a basis for automated control of chemical or product manufacturing, distribution, importing and exporting through the generation of country or regional manufacturing and sales status; generate certification letters; generate Chemical Control Law manufacturing and sales statuses for particular countries or regions of the world; and provide real-time updating of a chemical's or product's manufacturing and sales status.

Abstract: The adhesive properties of a hot melt adhesive, comprising a base polymer and a tackifying resin, can be improved by introducing into the hot melt adhesive an epoxy adduct comprising the reaction product between a compound such as a polymer having at least one active hydrogen and an epoxy compound.

Abstract: A precast concrete structural unit is provided including a concrete sub-unit and a plastic resinous sheet. The sheet is adhered to the sub-unit at the time of pouring the concrete, utilizing a polychloroprene contact adhesive. The structural unit may further include adhesive coated reinforcement. Among the concrete structural units which are provided is a burial vault including concrete wall portions and a plastic resinous liner. The liner is adhered to the wall portions, at the time of pouring the concrete, utilizing the polychloroprene contact adhesive. The vault may also include adhesive coated reinforcement. The polychloroprene contact adhesive is essentially a blended aqueous latex comprising hydrophilic chloroprene copolymer latex particles and emulsified or dispersed hydrocarbon resin tackifier particles.