摘要:
Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
摘要:
Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
摘要:
Disclosed are sulfur-containing polyurea compositions and methods of using the compositions as sealants, particularly as low specific-gravity aerospace sealants.
摘要:
Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
摘要:
Disclosed are flexible polyamines, flexible amine-terminated polyformal adducts, flexible-amine-terminated polythioether adducts, compositions comprising flexible polyamines and isocyanate-terminated prepolymers, and compositions comprising flexible amine-terminated adducts and isocyanate-terminated prepolymers. Uses of the compositions as sealants, and particularly as aerospace sealants, are also disclosed.
摘要:
Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
摘要:
Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
摘要:
The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
摘要:
The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed.
摘要:
Disclosed are perfluoroethers and perfluoroether compositions useful in high temperature aerospace applications. The perfluoroethers can be adapted for use with various curing chemistries.