PHENOLIC RESIN FOR SHELL MOLDING, PROCESS FOR PRODUCING THE SAME, RESIN COATED SAND FOR SHELL MOLDING, AND SHELL MOLD FORMED OF THE SAME
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
May 13, 2011
filing date -
Dec 12, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A phenolic resin for shell molding is provided which generates less tar during casting and has low thermal expansion properties and high flexibility. Further, a process for producing the phenolic resin, RCS obtained by using the phenolic resin, and a shell mold obtained by using such RCS are provided.A phenolic resin having advantageous characteristics is obtained by reacting phenols and naphthols with aldehydes in the presence of at least one of divalent metal salt and oxalic acid which acts as catalyst.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully