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Patent

IMPROVED LOW-TEMPERATURE IMPACT RESISTANCE IN PTMEG-BASED POLYURETHANE IMPACT MODIFIERS


Application Date:
Jan 25, 2018
USPTO Patent:
US 15549772
Abstract:

An impact modifier, which is an isocyanate-terminated polymer, the isocyanate groups of which are partially or completely blocked by reaction with a blocking agent, wherein the isocyanate-terminated polymer is a rea...

Inventors:
Christian KRÜGER, Schlieren (CH)
Urs RHEINEGGER, Regensdorf (CH)
International Classification:
C08G 18/48 (20180125); C08G 18/10 (20180125); C08G 65/20 (20180125); C08G 18/75 (20180125); C08G 18/78 (20180125); C08G 18/79 (20180125); C08G 18/72 (20180125)

Claims

What is claimed is:

1. An impact modifier which is an isocyanate-terminated polymer, the isocyanate groups of which have been fully or partly blocked by reaction with a blocking agent, wherein the isocyanate-terminated polymer is a reaction product ofa) one or more polyols comprising polytetramethylene ether glycol in a proportion of at least 95% by...

Description:

TECHNICAL FIELD

The invention relates to impact modifiers for epoxy resin-based adhesives, especially epoxy resin-based structural adhesives.

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