Abstract: A polyurethane based prepolymer is provided and useful in biomedical devices which provides high oxygen permeability and superior physical properties. A hydrogel is produced from a comonomer mixture containing a polysiloxane-containing urethane prepolymer, tris(trimethylsiloxy)-silylpropyl methacrylate and a hydrophilic comonomer. The hydrogel is especially useful for biomedical materials such as contact lenses and implants.

Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.

Abstract: A polyurethane based prepolymer is provided and useful in biomedical devices which provides high oxygen permeability and superior physical properties. A hydrogel is produced from a comonomer mixture containing a polysiloxane-containing urethane prepolymer, tris(trimethylsiloxy)-silylpropyl methacrylate and a hydrophilic comonomer. The hydrogel is especially useful for biomedical materials such as contact lenses and implants.

Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.

Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.

Abstract: A novel polyurethane based prepolymer useful in biomedical devices which provides high oxygen permeability and superior physical properties.

Abstract: A polymerizable composition, suitable for use as an adhesive, sealant or coating, comprising a urethane-acrylate-capped prepolymer based on a polymeric or copolymeric alkylene ether polyol. The composition provides improved properties, particularly cure-through-gap, impact and cryogenic strength properties. A process for preparing the composition and a process for using it are also disclosed.

Abstract: A polymerizable adhesive and sealant composition comprising a urethane-acrylate-capped prepolymer based on a polybutadiene polyol or polyamine having at least about 70 percent of the butadiene units in the 1,4-configuration. The composition provides improved thermal, impact and cure-through-gap properties. A process for preparing the composition and a process for using it are also disclosed.

Abstract: Homopolymer of compounds having the formula ##STR1## wherein n is 0 or 1, m is 1, X is an anion, R' is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, polymers thereof are produced by melt cracking a compound having the formula ##STR2## wherein Z is ##STR3## wherein Y is hydroxyl or RO, R being alkyl, aryl or aralkyl, and R.sup.1 -R.sup.4, n, m and X are as set forth above.

Abstract: Compounds having the formula ##STR1## wherein n and m are, individually, 0 or 1, X is an anion, R' is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, polymers thereof and methods for their production, are disclosed.

Abstract: Polymers of compounds having the formula ##STR1## wherein n and m are, individually, 0 or 1, X is an anion, R.sup.1 is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, and methods for their production, are disclosed.

Abstract: Compounds having the formulae ##STR1## wherein Y is hydroxyl or R.sup.2 O, wherein R.sup.2 is alkyl, aryl or aralkyl, R' is hydrogen, methyl or phenyl and Z is ##STR2## wherein n and m are, individually, 0 or 1, X is a halogen, R.sup.3 is alkyl, hydroxyalkyl, or alkoxyalkyl and R.sup.4, R.sup.5 and R.sup.6 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, and methods for their production, are disclosed.

Abstract: Compounds having the formula ##STR1## wherein n and m are, individually, 0 or 1, X is an anion, R' is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, polymers thereof and methods for their production, are disclosed.

Abstract: Compounds having the formula ##STR1## wherein Y is R.sup.2 O, R.sup.2 being alkyl (C.sub.1 -C.sub.10), R.sup.1 is hydrogen or methyl and Z is ##STR2## WHEREIN M IS 0 OR 1, X is halogen, R.sup.4 and R.sup.5 are, individually, hydrogen, alkyl (C.sub.1 -C.sub.4), aryl (C.sub.6 -C.sub.10), alkaryl (C.sub.7 -C.sub.11) or aralkyl (C.sub.7 -C.sub.11) and R.sup.6 is alkyl (C.sub.1 -C.sub.4), aryl (C.sub.6 -C.sub.10), alkaryl (C.sub.7 -C.sub.11) or aralkyl (C.sub.7 -C.sub.11), are disclosed.

Abstract: Compounds having the formula ##STR1## wherein R.sup.1 is hydrogen or methyl and R.sup.2 , R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl (C.sub.1 -C.sub.4), aryl (C.sub.6 -C.sub.10), aralkyl (C.sub.7 -C.sub.11) or alkaryl (C.sub.7 -C.sub.11) are prepared by heating hydroxyethyl or hydrocarbyloxyethyl imidazolines at 275.degree.-500.degree. and in the presence of a catalyst. Salts are also prepared.

Abstract: Compounds having the formulae ##STR1## wherein Y is hydroxyl or R.sup.2 O, wherein R.sup.2 is alkyl, aryl or aralkyl, R.sup.1 is hydrogen, methyl or phenyl, Z is ##STR2## and Q is ##STR3## wherein n and m are, individually, 0 or 1, X is a halogen, R.sup.3 is alkyl, hydroxyalkyl, or alkoxyalkyl and R.sup.4, R.sup.5 and R.sup.6 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, and methods for their production, are disclosed.

Abstract: Compounds having the formula ##STR1## wherein m is 0 or 1, X is an anion, R.sup.1 is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, are disclosed.

Abstract: A polymerizable composition, suitable for use as an adhesive, sealant or coating, comprising a urethane-acrylate-capped prepolymer based on a graft polyol derived from the reaction between the polyol and a vinyl monomer or polymer. In a preferred embodiment, the graft polyol is present as the disperse phase of a polymer/polyol dispersion. The composition provides improved general properties, particularly cure-through-gap and impact properties. The composition typically has a relatively low viscosity, making it especially useful for "retaining" purposes. A process for preparing the composition and a process for using it are also disclosed.

Abstract: Compounds having the formulae ##STR1## wherein Y is hydroxyl or R.sup.2 O, wherein R.sup.2 is alkyl, aryl or aralkyl, R' is hydrogen, methyl or phenyl and Z is ##STR2## WHEREIN N AND M ARE, INDIVIDUALLY, 0 OR 1, X is a halogen, R.sup.3 is alkyl, hydroxyalkyl, or alkoxyalkyl and R.sup.4, R.sup.5 and R.sup.6 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, and methods for their production, are disclosed. These compounds form polymers useful in the treatment of water sludges, the formation of fibers, and the treatment of paper.

Abstract: Compounds having the formula ##STR1## wherein n and m are, individually, 0 or 1, X is an anion, R' is hydrogen, methyl or phenyl and R.sup.2, R.sup.3 and R.sup.4 are, individually, hydrogen, alkyl, aryl, alkaryl or aralkyl, polymers thereof and methods for their production, are disclosed. The compounds form polymers useful in the treatment of water sludges, the formation of fibers and the treatment of paper.