Mould material binding agent system which cold-hardens with form

Details Mould material binding agent system which cold-hardens with form Mould material binding agent system which cold-hardens with form

1985-02-07

1985-12-10

Welsh, Maurice J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524730, 524796, 528 28, 528 48, C08L 7504

Patent

active

045580740

ABSTRACT:
This invention relates to a mould material binding agent system for the production of foundry mould parts. This binding agent system contains as components a solution of a phenol-containing polyol having at least two OH groups in the molecule and a polyisocyanate, optionally also in the form of a solution, having at least two NCO groups in the molecule, which react with one another to a cold-hardening binding agent with formation of polyurethane. According to the invention there is also added to the polyisocyanate component a chlorosilane, which for example may comprise one or more compounds of the group trimethyl chlorosilane, dimethyl dichlorosilane, methyl trichlorosilane, tetrachlorosilane, diethyl chlorosilane, vinyl trichlorosilane and diphenyl dichlorosilane. The added quantity is preferably 0.01-2% by wt. relative to the polyisocyanate component.
By the invention a simply and economically producible binding agent is created, which combines high initial strength values of the mould parts with good sand life values of the mould material mixture.

REFERENCES:
patent: 3388102 (1968-06-01), Brizgys
patent: 3734936 (1973-05-01), Brown et al.
patent: 3965057 (1976-06-01), Ammons et al.

Affiliated with

Also associated with

Rating

Mould material binding agent system which cold-hardens with form does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Mould material binding agent system which cold-hardens with form, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mould material binding agent system which cold-hardens with form will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-59248