EP0316150A2
Expired / Lapsed
EP
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Thermosetting urethane elastomer
Assignee: Nippon Polyurethane Industry Co Ltd
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Filing: 1988-11-09
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Granted: —
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Expires: 2008-11-09
Abstract
Abstract A thermosetting urethane elastomer is prepared from: (a) a prepolymer having isocyanate groups at terminal ends obtained by allowing p-phenylene diisocyanate to react with a compound having 2 or more active hydrogens, and (b) curing agents of 1,4-bis(2-hydroxyethoxy)benzene and trimethylolpropane or 1,4-bis(2-hydroxyethoxy)benzene and a polyol having isocyanurate ring.
Inventors
- 👤 Masahiro Kawasaki
- 👤 Yukio Ohbuchi
- 👤 Yoshiaki Maeda
- 👤 Susumu Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 17:52
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/08; C08G18/0895; C08G18/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
47 words
A thermosetting urethane elastomer prepared from: (a) a prepolymer having isocyanate groups at terminal ends obtained by allowing p-phenylene diisocyanate to react with a compound having 2 or more active hydrogens, and (b) curing agents of 1,4-bis(2-hydroxyethoxy)benzene and trimethylolpropane or 1,4-bis(2-hydroxyethoxy)benzene and a polyol having isocyanurate ring.
Claim 2
Dependent Claim
47 words
A thermosetting urethane elastomer prepared from: (a) a prepolymer having isocyanate groups at terminal ends obtained by allowing p-phenylene diisocyanate to react with a compound having 2 or more active hydrogens, and (b) curing agents of 1,4-bis(2-hydroxyethoxy)benzene and trimethylolpropane or 1,4-bis(2-hydroxyethoxy)benzene and a polyol having isocyanurate ring.
Claim 3
Dependent Claim
35 words
A thermosetting urethane elastomer according to claim 1, wherein the polyol having isocyanurate ring is represented by the formula (1): where ℓ, m, n=0 - ℓ, 0 ≦ ℓ + m + n ≦ 3.
Claim 4
Dependent Claim
23 words
A thermosetting urethane elastomer according to claim 1, wherein the content of isocyanate groups in the prepolymer is 2 to 20% by weight.
Claim 5
Dependent Claim
23 words
A thermosetting urethane elastomer according to claim 1, wherein the content of isocyanate groups in the prepolymer is 3 to 10% by weight.
Claim 6
Dependent Claim
30 words
A thermosetting urethane elastomer according to claim 1, wherein the NCO equivalent in the prepolymer : OH equivalent in the curing agents is 1 : 0.8 to 1 : 0.95.
Claim 7
Dependent Claim
20 words
A thermosetting urethane elastomer according to claim 1, wherein the mole ratio of 1,4-bis(2-hydroxyethoxy)benzene to trimethylolpropane is 9.5:0.5 to 1:9.
Claim 8
Dependent Claim
24 words
A thermosetting urethane elastomer according to claim 1, wherein the mole ratio of 1,4-bis(2-hydroxyethoxy)benzene to the polyol containing isocyanurate ring is 9.5:0.5 to 1:9.
References Cited (Backward Citations)
No citation records indexed.
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