Preparation of poly(ether-urethanes) from cyclic ethers and organic isocyanates
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08G-018/08
C08G-018/22
출원번호
US-0198799
(1994-02-17)
발명자
/ 주소
Drysdale Neville E. (Newark DE)
출원인 / 주소
E. I. Du Pont de Nemours and Company (Wilmington DE 02)
인용정보
피인용 횟수 :
13인용 특허 :
0
초록▼
Poly(ether-urethanes) can be made from cyclic ethers and organic isocyanates by using selected metal compounds as catalysts. Polymers useful as thermoplastic elastomers, spandex fibers or urethane rubbers can be made by reacting diisocyanates containing functional groups with a tetrahydrofuran, espe
Poly(ether-urethanes) can be made from cyclic ethers and organic isocyanates by using selected metal compounds as catalysts. Polymers useful as thermoplastic elastomers, spandex fibers or urethane rubbers can be made by reacting diisocyanates containing functional groups with a tetrahydrofuran, especially tetrahydrofuran itself.
대표청구항▼
A process for the production of poly(ether-urethanes), comprising, contacting a cyclic ether which is an oxirane, oxetane, tetrahydrofuran, 1,3-dioxolane, 1,3, 5-trioxane, or oxepane, an organic isocyanate of the formula A(NCO)x and a catalyst of the formula MZs.Qt, wherein: M is a metal selected fr
A process for the production of poly(ether-urethanes), comprising, contacting a cyclic ether which is an oxirane, oxetane, tetrahydrofuran, 1,3-dioxolane, 1,3, 5-trioxane, or oxepane, an organic isocyanate of the formula A(NCO)x and a catalyst of the formula MZs.Qt, wherein: M is a metal selected from the group consisting of cobalt, tungsten, vanadium, niobium, strontium, barium, scandium, yttrium, the rare earth metals, titanium, zirconium, hafnium, chromium, molybdenum, tantalum, rhenium, iron, ruthenium, osmium, rhodium, iridium, palladium, platinum, silver, gold, zinc, cadmium, mercury, aluminum, gallium, indium, thulium, germanium, tin, lead, arsenic, antimony and bismuth; at least one of Z is an anion of the formula －OSO2R5, wherein R5 is perfluoroalkyl containing 1 to 12 carbon atoms or part of a fluorinated group wherein the carbon atoms alpha and beta to the sulfonate group are together bonded to at least four fluorine atoms, or tetrafluoroborate, and the remainder of Z is oxo or one or more monovalent anions; s is 1 when m is silver; s is 2 when M is strontium, barium, cobalt, rhodium, iridium, palladium, chromium, zinc, cadmium or mercury; s is 3 when M is scandium, yttrium, a rare earth metal, arsenic, antimony, bismuth, gold, iron, ruthenium, osmium, aluminum, gallium, indium or thulium; s is 4 when M is titanium, zirconium, hafnium, molybdenum, germanium, tin or lead; s is 5 when M is rhenium, vanadium, niobium or tantalum; s is 6 when M is tungsten; Q is a neutral ligand; t is 0 or an integer of 1 to 6; each A is independently an organic radical having x free valencies; each x is independently 1, 2, 3, 4, 5 or 6; and provided that: A is bound to isocyanate groups through a carbon atom; and each oxo present as part of Z is considered to account for two of s.
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이 특허를 인용한 특허 (13)
Drysdale Neville Everton, Copolymerization of tetrahydrofurans and cyclic anhydrides.
Goldfinger, Marc B.; Sunkara, Hari B., Polyether ester elastomer comprising polytrimethylene ether ester soft segment and tetramethylene ester hard segment.
Goldfinger, Marc B.; Sunkara, Hari B., Polyether ester elastomer comprising polytrimethylene ether ester soft segment and trimethylene ester hard segment.
Drysdale Neville Everton ; Bockrath Richard Edmund ; Herron Norman ; Citron Joel David, Polymerization of, and depolymerization to, cyclic ethers using selected metal compound catalysts.
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