Synergistic amine chain-extenders in polyurea spray elastomers

Details Synergistic amine chain-extenders in polyurea spray elastomers Synergistic amine chain-extenders in polyurea spray elastomers

2006-07-18

2006-07-18

Gorr, Rachel (Department: 1711)

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

C528S068000, C528S078000

Reexamination Certificate

active

07078475

ABSTRACT:
Disclosed are derivatives of isophorone diamine exhibiting a synergistic relationship with other commonly employed chain extenders offering enhanced efficacy with regard to slowing of the polyurea elastomer cure profile, and processes employing their use. According to the invention, extensions of the gel-free and tack-free times are more readily achieved at lower loading levels for these chain extender blends than are afforded through the sole use of the individual molecules.

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