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US 11,180,600 B2Granted
Two-part curable urethane composition
AssigneeShowa Denko Materials Co., Ltd.
InventorsKazuhiko Mori, Yuya Hiramoto, Hisao Matsumiya
Life of this patent
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Abstract
A two-part curable urethane composition comprising a main agent (A) and a curing agent (B), wherein the main agent (A) contains a urethane prepolymer (a), an isocyanurate-modified polyisocyanate compound (b), and a silane coupling agent (c) at a specified ratio by mass; and the curing agent (B) contains a polyether polyol (d), a polyether polyol having 4 or more hydroxy groups (e), and an amine catalyst (f) at a specified ratio by mass.
Claims8
A two-part curable urethane composition comprising a main agent (A) and a curing agent (B), wherein
- the main agent (A) contains a urethane prepolymer (a), an isocyanurate-modified polyisocyanate compound (b), and a silane coupling agent (c), and a content of the isocyanurate-modified polyisocyanate compound (b) is 0.5 to 5.0 parts by mass relative to 100 parts by mass of the urethane prepolymer (a) and a content of the silane coupling agent (c) is 0.5 to 5.0 parts by mass relative to 100 parts by mass of the urethane prepolymer (a), and
- the curing agent (B) contains a polyether polyol having two or three hydroxy groups (d), a polyether polyol having 4 or more hydroxy groups (e), and an amine catalyst (f), and a content of the polyether polyol having 4 or more hydroxy groups (e) is 1.0 to 5.0 parts by mass relative to 100 parts by mass of the polyether polyol having two or three hydroxy groups (d) and a content of the amine catalyst (f) is 1.0 to 10.0 parts by mass relative to 100 parts by mass of the polyether polyol (d).
Dependencies are inferred from the claim text.