EP0617066B1
Expired / Lapsed
EP
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Thermosetting urethane elastomer
Assignee: Nippon Polyurethane Industry Co Ltd
•
Filing: 1988-11-09
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Granted: 1998-01-28
•
Expires: 2008-11-09
Abstract
No abstract record available.
Inventors
- 👤 Masahiro Kawasaki
- 👤 Yukio Ohbuchi
- 👤 Yoshiaki Maeda
- 👤 Susumu Sato
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 15:36
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: 4
Claim 1
Independent Claim
79 words
A thermosetting urethane elastomer prepared
from: (a) a prepolymer having from 2 to 20 weight %
terminal isocyanate groups obtained by allowing p-phenylene
diisocyanate to react with a compound having
2 or more active hydrogen atoms and a molecular weight
from 62 to 6,000 other than 1,4-bis (2-hydroxyethoxy)benzene or a polyol having an isocyanurate ring ; and (b) as curing agent, 1,4-his (2-hydroxyethoxy)
benzene and a polyol having an
isocyanurate ring, in a molar ratio of 9.5:0.5 to 1:9.
Claim 2
Dependent Claim
21 words
A thermosetting urethane elastomer according
to claim 1, wherein the prepolymer has from 3 to 10
weight % terminal isocyanate groups.
Claim 3
Dependent Claim
31 words
A thermosetting urethane elastomer according
to claim 1 or claim 2, wherein the ratio of NCO
equivalents in the prepolymer : OH equivalents in the
curing agents is 1:0.8 to 1:0.95.
Claim 4
Dependent Claim
51 words
A thermosetting urethane elastomer according
to any one of claims 1 to 3, wherein the polyol having
an isocyanurate ring is of the general formula (1): in which each of ℓ, m and n has a value from 0 to 1
and 0 ≤ ℓ + m + n ≤ 3.
References Cited (Backward Citations)
No citation records indexed.
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