摘要:
A lubricating film for preventing time-temperature dependent increase in adhesion in a catheter assembly including an interference-fitted thermoplastic catheter wherein a film of polydimethylsiloxane is deposited on the tip of the cannula, preferably from a solution of a volatile solvent.
摘要:
An antithrombogenic polyurethane polymer being bound to a support substrate wherein the antithrombogenic agent is reacted through an aldehyde group with an amine functionality of a polyurethane-urea to form the covalently bonded antithrombogenic material.
摘要:
A soft, low modulus, non-crystalline segmented polyurethane characterized by a 100% modulus less than about 250 psi, initial tensile set less than about 30% and tensile strength of about 3500 to 6500 psi obtained by balancing the percent hard segment and the degree of cross-linking within the ranges 14 to 25% hard segment and 5,000 to 30,000 molecular weight per cross-link in a segmented polyurethane; and a flexible glove for use by surgeons and others which is easily donned and comfortable on the hand, wherein the glove forming material consists essentially of the aforesaid polyurethane.
摘要:
A process of making a polyurethane condom which comprises providing an organic solvent solution of a polyurethane, dipping a condom form or mold into the polyurethane solution, raising the form from solution and allowing the resultant deposited film to cure at elevated temperatures, thereby forming the condom.
摘要:
An antithrombogenic polyurethane polymer being bound to a support substrate wherein the antithrombogenic agent is reacted through an aldehyde group with an amine functionality of a polyurethane-urea to form the covalently bonded antithrombogenic material.
摘要:
A crystalline grindable end-blocked prepolymer useful in providing a polyurethane elastomer having a 100% modulus less than approximately 250 psi, tensile of 3500 to 6500 psi, and less than 30% initial tensile set, said prepolymer being the product of reacting an organic polyisocyanate, a long chain crystalline diol having an average molecular weight of approximately 500 to 5000, a polyhydroxy cross-linking agent, and an end-blocking agent.
摘要:
A process of making a polyurethane condom which comprises providing an organic solvent solution of a polyurethane, a single dipping of a condom form or mold into the polyurethane solution, raising the form from solution and allowing the resultant deposited film to cure at elevated temperatures, thereby forming the condom.
摘要:
An antithrombogenic thermoplastic polyurethane product and process for preparing the same which comprises a substrate and at least one layer of a polyurethane alloy complex comprising a thermoplastic polyurethane and completely dispersed therein a preformed complex of an antithrombogenic material ionically bonded with a quaternary ammonium compound.
摘要:
An antithrombogenic thermoplastic polyurethane product and process for preparing the same which comprises a substrate and at least one layer of a polyurethane alloy complex comprising a thermoplastic polyurethane and completely dispersed therein a preformed complex of an antithrombogenic material ionically bonded with a quaternary ammonium compound.