Patent EP0073835A1 successfully refreshed from Google Patents.
EP0073835A1
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Process for producing polyurethane polymer
Assignee: Tanabe Pharma Corp
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Filing: 1981-12-17
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Granted: —
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Expires: 2001-12-17
Abstract
Abstract A process for producing polyurethane polymer by reacting an at least partly blocked isocyanate compound with an active hydrogen-containing compound using catalytic amounts of a specific organotin compound and a specific amine compound. The resulting polymer significantly lowers a baking temperature and provides a baked film having a smooth surface and good physical properties.
Inventors
- 👤 Koreyoshi Suenobu
- 👤 Masanori Kohara
- 👤 Yasuhiro Hidaka
- 👤 Kazuki 703 Nara Garden Heights Katsuyama
- 👤 Ryoichi Kinishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:44
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/165; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G2150/00; C08G2150/20
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
A method of producing polyurethanes which comprises reacting an at least partially blocked isocyanate compound with an active hydrogen-containing compound in the presence of at least one compound selected from the group consisting of dialkyltin, diaryltin, monoalkyltin and monoaryltin compounds, and at least one amine compound selected from the group consisting of 1,10-phenanthroline, bipyridyl, 4,4'-dimethyl-2,2'-bipyridyl, 2,4,6-tris(dimethylaminomethyl)phenol, a morpholine compound, a piperidine compound and an alkanolamine compound of the formula (R) 3-n N(CH 2 CH 2 OH) n wherein R is a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms, a phenyl group or a group of the formula -(CH 2 ) m NH 2 in which m is an integer of 1 to 8, and n is an integer of 1 to 3 and wherein, when n is an integer of 1, the two Rs may be the same or different.
Claim 2
Independent Claim
145 words
A method of producing polyurethanes which comprises reacting an at least partially blocked isocyanate compound with an active hydrogen-containing compound in the presence of at least one compound selected from the group consisting of dialkyltin, diaryltin, monoalkyltin and monoaryltin compounds, and at least one amine compound selected from the group consisting of 1,10-phenanthroline, bipyridyl, 4,4'-dimethyl-2,2'-bipyridyl, 2,4,6-tris(dimethylaminomethyl)phenol, a morpholine compound, a piperidine compound and an alkanolamine compound of the formula (R) 3-n N(CH 2 CH 2 OH) n wherein R is a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms, a phenyl group or a group of the formula -(CH 2 ) m NH 2 in which m is an integer of 1 to 8, and n is an integer of 1 to 3 and wherein, when n is an integer of 1, the two Rs may be the same or different.
Claim 3
Dependent Claim
23 words
A method according to Claim 1, wherein the dialkyltin compound is selected from the group consisting of dibutyltin oxide, 1,1,3,3-tetrabutyl-1,3-diacetoxydistannoxane and dibutyltin dilaurate.
Claim 4
Dependent Claim
13 words
A method according to Claim 1, wherein the diaryltin compound is diphenyltin oxide.
Claim 5
Dependent Claim
13 words
A method according to Claim 1, wherein the monoalkyltin compound is monobutyltin oxide.
Claim 6
Dependent Claim
13 words
A method according to Claim 1, wherein the monoaryltin compound is monophenyltin oxide.
Claim 7
Dependent Claim
12 words
A method according to Claim 1, wherein the amine compound is 1,10-phenanthroline.
Claim 8
Dependent Claim
12 words
A method according to Claim 1, wherein the amine compound is bipyridyl.
Claim 9
Dependent Claim
12 words
A method according to Claim 1, wherein the amine compound is 4,4'-dimethyl-2,2'-bipyridyl.
Claim 10
Dependent Claim
12 words
A method according to Claim 1, wherein the amine compound is 2,4,6-tris(dimethylaminomethyl)phenol.
Claim 11
Dependent Claim
14 words
A method according to Claim 1, wherein the amine compound is a morpholine compound.
Claim 12
Dependent Claim
14 words
A method according to Claim 1, wherein the amine compound is a piperidine compound.
Claim 13
Dependent Claim
14 words
A method according to Claim 1, wherein the amine compound is an alkanolamine compound.
References Cited (Backward Citations)
No citation records indexed.
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