Invention Grant
- Patent Title: Phenol-formaldehyde novolac resin having low concentration of free phenol
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Application No.: US14295847Application Date: 2014-06-04
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Publication No.: US09458350B2Publication Date: 2016-10-04
- Inventor: Richard A. Rediger , Edward Lucas
- Applicant: Georgia-Pacific Chemicals LLC
- Applicant Address: US GA Atlanta
- Assignee: Georgia-Pacific Chemicals LLC
- Current Assignee: Georgia-Pacific Chemicals LLC
- Current Assignee Address: US GA Atlanta
- Agent Ram W. Sabnis
- Main IPC: C09D161/00
- IPC: C09D161/00 ; C09D161/06 ; B22C1/22 ; C08G8/10 ; C08L59/00 ; C09D159/00
Abstract:
A phenol-formaldehyde novolac resin having a low concentration of free phenol prepared by distilling residual phenol from a molten novolac resin and replacing at least a portion of the phenol with a solvent having a volatility equal to or less than phenol. Such modified novolac resins are suitable for the production of resin coated molding sands for shell molding and sand cores, as well as for the production of resin coated proppants for use in oil and gas recovery operations.
Public/Granted literature
- US20140287238A1 PHENOL-FORMALDEHYDE NOVOLAC RESIN HAVING LOW CONCENTRATION OF FREE PHENOL Public/Granted day:2014-09-25
Information query
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