US2013310612A1PendingUtilityA1
Liquid resol-type phenolic resin
Est. expiryJan 14, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:Yuji Suzuki
C07C 39/21C08G 12/06C08G 73/024C08G 8/10C08G 8/08C08G 73/00
55
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Claims
Abstract
A liquid resol-type phenolic resin obtained by reacting a phenol (A), and a secondary and/or tertiary alkylamine compound (B) in the presence of a basic catalyst. The nitrogen content relative to the total weight of the liquid resol-type phenolic resin is preferably from 3 to 30% by weight. Further, the secondary and/or tertiary alkylamine compound (B) is preferably hexamethylenetetramine. Moreover, the molar ratio between the phenol (A) and the secondary and/or tertiary alkylamine compound (B) preferably satisfies (B)/(A)=0.13 to 0.35.
Claims
exact text as granted — not AI-modified1 . A liquid resol-type phenolic resin obtained by reacting a phenol (A), and a secondary and/or tertiary alkylamine compound (B) in presence of a basic catalyst.
2 . The liquid resol-type phenolic resin according to claim 1 , wherein a nitrogen content relative to a total weight of the liquid resol-type phenolic resin is from 3 to 30% by weight.
3 . The liquid resol-type phenolic resin according to claim 1 , wherein the secondary and/or tertiary alkylamine compound (B) is hexamethylenetetramine.
4 . The liquid resol-type phenolic resin according to claim 1 , wherein the phenol (A) and the secondary and/or tertiary alkylamine compound (B) are reacted in a molar ratio that satisfies (B)/(A)=0.13 to 0.35.
5 . The liquid resol-type phenolic resin according to claim 1 , which is used for impregnation.Join the waitlist — get patent alerts
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