Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1983-04-25
1986-07-22
Ivy, C. Warren
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524748, 524778, 524795, 524857, 524863, 524767, 106 3824, C09D 500
Patent
active
046020608
ABSTRACT:
A two-stage system can provide a water-soluble releasing interface which permits a plurality of cycles of the mold between applications with such reaction-injection molding materials as reinforced urethane. The two-coat release system provides on the mold surface a base coat, including a polymer release agent with groups capable of bonding to the mold surface (e.g., a carboxy-terminated silicone) and a bonding or cross-linking agent (e.g., tetraisopropyltitanate), which reacts with and cross links the polymer and provides bonding with the mold surface and for soap-like materials, and a top coat, which is a water-soluble soap-like material (e.g., a water-soluble metallic salt of long-chain fatty acid). Such a system can be particularly adapted for use with urethane RIM materials.
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Clark Sheldon L.
Pajaujis Frank P.
Frekote, Inc.
Ivy C. Warren
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