Improved, low viscosity, shelf stable, energy-actiivated compositions, equipment, sytems and methods for producing same

Inactive Publication Date: 2013-07-25
HB FULLER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012]In view of the foregoing, the present invention provides compositions, processes, equipment and methods that provide substantial advantages over the prior art

Problems solved by technology

There are several drawbacks with the use of conventional hot melt dispensing systems including handling solids, high energy consumption, polymer decomposition, expensive equipment, safety concerns and the like.
Compositions such as disclosed by Stumphauzer et al. and Jorgenson et al. tend to be thermodynamically unstable, meaning that pressure, shear forces or polymer hysteresis, chemical induced differentials on the composition tend to cause the various components of the composition to separate (e.g., the liquid carrier can separate from the polymer solids).
While th

Method used

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  • Improved, low viscosity, shelf stable, energy-actiivated compositions, equipment, sytems and methods for producing same
  • Improved, low viscosity, shelf stable, energy-actiivated compositions, equipment, sytems and methods for producing same
  • Improved, low viscosity, shelf stable, energy-actiivated compositions, equipment, sytems and methods for producing same

Examples

Experimental program
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Effect test

Example

[0180]Example 4B follows the same process as described for example 4A except for that at 100° F., the EVA is added to the formulation and mixed for 5 minutes. The mixture is then allowed to cool.

Example

[0181]Example 4D follows the same process as described for example 4A except that instead of Silica, Pluronic F-127 surfactant is added to the oil at the start of the process.

Example

[0182]Example 4E follows the same process as described for example 4A except that Irganox B225 is added to the oil silica mixture at the start of the process.

TABLE 7ExemplaryExemplaryExemplaryExemplaryExemplaryIntermediateIntermediateIntermediateIntermediateIntermediateIngredient ID4A4B4C4D4ESoybean Oil41.541.541.541.541.5Polypropylene-116.516.5—216.5Polypropylene-2——16.514.8—Maleated PP-14.14.14.144.1Polyethylene-133333Silica0.50.50.500.5Pluronic F-1270000.20Ateva 1820024.3000Irganox B22500.1000.1% Premix Total65.69065.665.565.7

Exemplary Intermediate Examples 5A-5B

[0183]In another embodiment of the invention the oil was heated to approximately 100° F. at which point the Ateva 2830 EVA is added to the mixing, heated oil. Once the Ateva 2830 EVA is dispersed into the oil, Pluronic F-127 (surfactant) is added followed immediately by the Irganox B225 (antioxidant) and the Sodium Bicarbonate. As the temperature reached 110° F., the mixture is charged with polypropylene. As the temperatu...

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Abstract

The present invention provides low viscosity energy-activated room temperature polymer compositions, equipment, systems and methods for handling, activating and dispensing the thermodynamically unstable, high solids, activatable liquid compositions.

Description

PRIORITY CLAIM[0001]This application claims priority to U.S. App. Ser. No. 61 / 285,816, filed Dec. 11, 2009, U.S. App. Ser No. 61 / 294,679, filed Jan. 13, 2010, and U.S. App. Ser. No. 61 / 309,181, filed Mar. 1, 2010, each of which is hereby incorporated by reference in its entirety.BACKGROUND OF INVENTION[0002]1. Field of Invention[0003]The present invention provides low viscosity energy-activated room temperature polymer compositions, equipment, systems and methods for handling, activating and dispensing the thermodynamically unstable, high solids, activatable liquid compositions.[0004]2. Description of Related Art[0005]Hot melt adhesives are routinely used in various applications where a stable surface-to-surface bond must be formed. Further, hot melt adhesives are used in securing a variety of both similar and dissimilar materials (e.g., cellulosic substrates such as wood, corrugated paper, cardboard, paper, carton stock, and other substrate materials such as plastics, metals, fabri...

Claims

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Application Information

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IPC IPC(8): B65D83/14
CPCC09J123/10B65D83/14C08L23/06C08L51/06C08L91/00C08L2205/03
Inventor JORGENSON, MICHAEL W.KOETH, DANIELLE E.KROTINE, JR., JEFFREY C.
Owner HB FULLER CO
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