Processes and compositions to enhance the tensile strength of re

Details Processes and compositions to enhance the tensile strength of re Processes and compositions to enhance the tensile strength of re

1990-10-12

1992-02-18

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523145, 524188, 106490, C08K 906, C08K 336

Patent

active

050895400

ABSTRACT:
The present invention provides methods for treating reclaimed sand obtained from dismantled foundry molds and cores which contain residue from a cured binder of an ester-cured alkaline phenolic resin. Treatment of the reclaimed sand with a silane solution containing one or more amines, particularly an aqueous solution containing a silane and one or more amines, enhances the tensile strengths of foundry molds and cores produced therefrom relative to those obtained with untreated reclaimed sand. Methods for producing foundry cores and molds which incorporate such a treatment process are also provided by this invention, as are raw batch formulations.

REFERENCES:
patent: 3635743 (1972-01-01), Smith
patent: 3847848 (1974-11-01), Beers et al.
patent: 4118540 (1978-10-01), Amort et al.
patent: 4468359 (1984-08-01), Lemon et al.
patent: 4474904 (1984-10-01), Lemon et al.
patent: 4780489 (1988-10-01), Dunnavant et al.
patent: 4789693 (1988-12-01), Jhaveri et al.
Iyer et al., "Reclamation of Phenolic Ester Cured No Bake Sands", in American Foundry Society Transactions (1989).
Union Carbide Bulletin, "Union Carbide Silanes as Additives for Foundry Resins", (Apr. 1968) pp. 1-5.
Stevenson and Railton, "Alphaset Sand Reclamation".
S.C.R.A.T.A. Article, "Experience of Reclaiming Alphaset Bonded Sand", (1985).
Kline, "Silane Coupling Agents as Integral Blends in Resin Filler System", Plastics (Jul. 1963) pp. 125-177.

Affiliated with

Also associated with

Rating

Processes and compositions to enhance the tensile strength of re does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Processes and compositions to enhance the tensile strength of re, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processes and compositions to enhance the tensile strength of re will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1824023