Catalysts and binder systems for manufacturing sandshapes

Details Catalysts and binder systems for manufacturing sandshapes Catalysts and binder systems for manufacturing sandshapes

1981-07-13

1983-05-10

Jacobs, Lewis T.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

528143, C08F13402, C08G 1404, C08G 1408

Patent

active

043830986

ABSTRACT:
A catalyst material is described, particularly useful in making core sand from which resin bound sand shapes are made. The preferred catalyst is a material comprising at least one salt made from a weak base and an acid from the group comprising lower aliphatic and aromatic hydrocarbon sulfonic acids. The curable resin binder is preferably a furfuryl alcohol polymer or other furan-based material. The resin is preferably present in an amount of about 0.5% to about 5% based on the weight of sand, while the catalyst is present in an amount of about 5% to 40% by weight of the resin material. The catalyzed composition provides an excellent combination of working or bench life, rapid curing on a delayed action basis and favorable shape-imparting and holding properties in the formed sand shapes. Specifically preferred compositions include aluminum and copper phenol and toluene sulfonic acid salts.

REFERENCES:
patent: 3347676 (1967-10-01), Cripps
patent: 3597386 (1971-08-01), Brabander
patent: 3842019 (1974-10-01), Kropp
patent: 4113700 (1978-09-01), Culbertson
patent: 4317763 (1982-03-01), Menting

Affiliated with

Also associated with

Rating

Catalysts and binder systems for manufacturing sandshapes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalysts and binder systems for manufacturing sandshapes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalysts and binder systems for manufacturing sandshapes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-526992