Ground rubber elastomeric composite useful in surfacings and the

Details Ground rubber elastomeric composite useful in surfacings and the Ground rubber elastomeric composite useful in surfacings and the

1976-02-20

1978-09-05

Dixon, Jr., William R.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

428327, 428403, 428407, 428425, 428 85, 156242, 156331, 428320, B32B 326, B32B 516, C09J 318

Patent

active

041121767

ABSTRACT:
There is provided a polyurethane ground rubber composite and a new method for formation and preparation thereof. The composite is suitable for use in laminated and other surfacing or as a surfacing and has excellent flexibility, resiliency, weatherability, and elastomeric qualities; and comprises particulate vulcanized rubber substantially coated on each particle with about 3 to about 8 microns, and in some instances about 3 to about 10 microns, of a cross-linked binder derived from an essentially solvent-free polymeric isocyanate prepolymer having a number average molecular weight of 800-4000, the cross-linking of the isocyanate prepolymer being accomplished by controlled reaction with water using an equivalent ratio of NCO/OH of 0.14/1 to 0.83/1 to form urea and buiret linkages, and providing a void content of 25-60 volume percent, so that the carbon dioxide generated by the water/isocyanate reaction can readily diffuse through the film and so that the vented carbon dioxide does not cause foaming of the composite; and methods of controlling the forming of the composite, the layering of the composite, and/or mixing it in situ.

REFERENCES:
patent: 2778810 (1957-01-01), Muller et al.
patent: 2929800 (1960-03-01), Hill, Jr.
patent: 3272098 (1966-09-01), Buchholtz et al.
patent: 3597297 (1971-08-01), Buchholtz et al.
patent: 3801421 (1974-04-01), Allen et al.
patent: 3936576 (1976-02-01), Kay
patent: 3968089 (1976-07-01), Cuscurida

Affiliated with

Also associated with

Rating

Ground rubber elastomeric composite useful in surfacings and the does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ground rubber elastomeric composite useful in surfacings and the, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ground rubber elastomeric composite useful in surfacings and the will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2097467