Method of preparing resin coated foundry sand using unsaturated

Details Method of preparing resin coated foundry sand using unsaturated Method of preparing resin coated foundry sand using unsaturated

1981-12-10

1983-08-02

Jacobs, Lewis T.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264236, 427221, 428407, 523148, 523521, C08L 6706

Patent

active

043965717

ABSTRACT:
In preparing a resin coated sand for use in sand mold casting processes by a hot-melt process using an unsaturated polyester which is solid at room temperature as the coating material, a solution of an organic peroxide as a polymerization initiator for the unsaturated polyester is introduced into the mixture of heated foundary sand and the unsaturated polyester while the polyester is in the state of liquid coating on the sand particles, and stirring is continued to uniformly mix the solution with the unsaturated polyester and evaporate and dissipate the solvent before solidification of the polyester coating as the result of cooling of the mixture. The polyester coating contains no liquid cross-linking agent, so that the resin coated sand is untacky and high in fluidity at room temperature and, therefore, can be filled into a die cavity to shape a sand mold or core with sufficiently high bulk density.

REFERENCES:
patent: 3179990 (1965-04-01), Preeman
patent: 4246165 (1981-01-01), Fujii et al.

Affiliated with

Also associated with

Rating

Method of preparing resin coated foundry sand using unsaturated does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing resin coated foundry sand using unsaturated , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing resin coated foundry sand using unsaturated will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-483462