Abstract: Articles of commerce which are transparent at a first temperature and less transparent at a second temperature which is different from said first temperature and which are capable of reverting to the original state of transparency are obtained by curing compositions containing at least one isocyanate-functional monomeric or polymeric material which may or may not contain hydrophilic centers consisting essentially of ethylene oxide units having the structure (CH.sub.2 CH.sub.2 O).sub.n, wherein n is at least two. When the isocyanate-functional material does not contain such hydrophilic centers, it must be cured in the presence of at least one monomeric or polymeric material which may or may not be reactive with isocyanate groups but must contain such hydrophilic centers. Thermosensitivity is imparted to the cured products by the presence of water in the cured material.

Abstract: Articles of commerce which are transparent at a first temperature and less transparent at a second temperature which is different from said first temperature and which are capable of reverting to the original state of transparency are obtained by curing compositions containing at least one isocyanate-functional monomeric or polymeric material which may or may not contain hydrophilic centers consisting essentially of ethylene oxide units having the structure (CH.sub.2 CH.sub.2 O).sub.n, wherein n is at least two. When the isocyanate-functional material does not contain such hydrophilic centers, it must be cured in the presence of at least one monomeric or polymeric material which may or may not be reactive with isocyanate groups but must contain such hydrophilic centers. Thermosensitivity is imparted to the cured products by the presence of water in the cured material.

Abstract: The precipitation from solution of amine phosphate salts is materially inhibited by incorporating at least one carboxylated nitrile elastomer into compositions containing at least one tertiary dimethylaryl amine and at least one unsaturated organic monoester of phosphoric acid.

Abstract: Novel structural adhesive systems for metal-bonding applications. The adhesives, comprising a solution or dispersion of a polymeric material in a monomer copolymerizable therewith having incorporated therein certain phosphorus-containing compounds, are characterized by an unexpected ability of providing strong adhesion to untreated metal surfaces without adversely affecting adhesive performance, including resistance to deleterious environments. The environmental resistance of the herein described adhesives can be further improved by the addition of one or more polybasic lead salts, metal molybdates and metal phosphates.

Abstract: Novel structural adhesive systems for metal-bonding applications. The adhesives, comprising a solution or dispersion of a polymeric material in a monomer copolymerizable therewith having incorporated therein certain phosphorus-containing compounds, are characterized by an unexpected ability of providing strong adhesion to untreated metal surfaces without adversely affecting adhesive performance, including resistance to deleterious environments. The environmental resistance of the herein described adhesives can be further improved by the addition of one or more polybasic lead salts, metal molybdates and metal phosphates.