Polyurethane composition containing a property-enhancing agent

Details Polyurethane composition containing a property-enhancing agent Polyurethane composition containing a property-enhancing agent

2006-11-21

2006-11-21

Sergent, Rabon (Department: 1711)

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C104S307000, C521S137000, C521S155000, C521S170000, C524S059000, C524S064000, C524S066000, C525S123000, C525S129000, C525S453000, C525S455000, C525S457000, C525S458000

Reexamination Certificate

active

07138437

ABSTRACT:
A composition comprising at least a part A and a part B is disclosed. The part A comprises at least one polyol and the part B comprises at least one isocyanate. At least one part further comprises at least one of the following: a strength enhancer having a softening point of from about 120° F. to about 400° F.; a non-reactive hydrophobic enhancer; and/or an impact absorption enhancer. These enhancers provide, among optional other benefits, enhanced pull strength. Additionally, a mass can be prepared by a method of combining part A with part B and applying the mixture to a void. The compositions may also be used in the repair of surface defects or for the reinforcement of structural members such as spike holes left after spike removal from railroad ties during road bed maintenance or repair.

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