by: Shah, Pankaj;

Moisture-curing adhesives

An improved urethane reactive hot-melt adhesive is provided that improves the green strength of bonded joints is provided. Also provided are an improved method of bonding articles together with such an adhesive and improved composite articles bonded together with such an adhesive.






I claim:

1. A composition useful as an adhesive comprising

(a) 1% to 50% by weight based on the weight of said composition of cristobalite silica, and

(b) 50% to 99% by weight based on said composition of moisture curable prepolymer,

wherein said moisture curable prepolymer comprises at least one urethane prepolymer comprising the reaction product of at least one polyol and at least one polyfunctional isocyanate.

2. The composition of claim 1 wherein the amount of said cristobalite silica is 9% to 16% by weight based on said composition.

3. The composition of claim 1 wherein said cristobalite silica is a powder with mean particle size of from 1 to 3 micrometers and maximum particle size of 25 micrometers.

4. The composition of claim 1 wherein said cristobalite silica is a powder with mean particle size of from 1 to 3 micrometers and maximum particle size of 25 micrometers and wherein the amount of said cristobalite silica is 9% to 1% by weight based on the weight of said composition.

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Overdenture attachment system

Shielded cable cutting device

Bis(alkyleneoxybenzophenone) ultraviolet light absorbers

Power operated toothbrush

Droppable airborne buoy

Swine feeding apparatus

Sewing machine

Counter circuit having load function

Power muscle stimulator

Iodine adsorbent

Compressible packages for infusible substances

Synchronous coupling

Polymerization of olefin

Infusion instrument

Primer compositions

Angularly adjustable snowboard binding mount

Extended moment arm anti-spin device

Calibration of magnetic tape drive

Clip

Rapid exit herringbone stall

Steam generator arrangement

Acoustic hit indicator

Composite frame member

Method of making field emitters

Cuvette rail

Endoscopic microsurgical instruments

Luggage

Nozzle inner radius inspection system

Compact electric asymmetry brake

Window lifting and lowering apparatus

Air-fuel ratio controller

Cleaning apparatus for disk-shaped workpieces

Method for producing resist structures

Foreign matter detecting device

Desulfurizing fossil fuels

Automotive air conditioner

Dipyrromethene metal chelate compounds

Handle bag of plastic film

Hydraulically operated engine valve system

Dental post system

Tubular grafts from purified submucosa

Compound machining apparatus

Bandanna for pets

Device for use in diagnosis

Memory access optimizing method

Internal combustion engines

Signal reproducing circuit

Locking device

Article comprising microcavity light sources

Energy efficient domestic refrigeration system

Trailer hitch alignment device

Inorganic binders employing waste glass

Process for preparing catalysts

Thermally-induced hydrolysis of acetal

Wrap-back test system and method

Flexible textile spindle assembly

Hammer drills for making boreholes

Structure of angular rate sensor

Wind energy conversion device

Automatic insulating tape wrapping apparatus

Surveillance system and method

Panel-form loudspeaker

Vacuum assembly for wire unwrapper

Mouse support

High voltage cut-off semiconductor device