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Polyurethane foam products with controlled release of agents and additives

By adding super-absorbent polymers and abrasive particles to polyurethane foam and forming a friction layer on the surface, the problem of difficult release of reagents from polyurethane foam in aqueous effluent is solved, achieving slow release of reagents and improved friction, and is suitable for Various applications.

Inactive Publication Date: 2007-03-07
H H BROWN SHOE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, adding reagents to increase its viscosity quickly makes the resulting viscosity too high to be pumpable and does not meet the processing requirements of metering machinery
A major problem with conventional existing polyurethane foams is their water resistance, in addition to limiting the amount of reagents that can be added

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0187] A controlled release polyurethane foam product for dishwashing was prepared by mixing an aqueous phase containing (by weight) the following ingredients with 33.3 g of a hydrophilic urethane prepolymer to obtain a polymeric aqueous mixture :

[0188] Component Weight

[0189] Water 26.5g

[0190] Feldspar abrasive 200 mesh 24.63g

[0191] A1120 Silane Union Carbide 0.2g

[0192] Laurimide DEA Chemron 1.29g

[0193] Sodium Ether Sulphonate 6.66g

[0194] Chemron

[0195] Alpha Olephin Sulphonate 40% Pilot 5.46g

[0196] Pluronic F88 BASF 0.8g

[0197] Germaben 2 Sutton Labs 0.62g

[0198] Citric acid 0.05g

[0199] Pigment 0.10g

[0200] Spice 0.30g

[0201] The aqueous mixture is mixed under high shear conditions in conventional metering equipment and 22 g are placed in an open mold which forms the liquid mass into the prescribed shape. As the polymeric mass begins to rise and fill the mould, a single piece of friction nonwoven fiber is placed on top of the g...

Embodiment 2

[0205] A controlled release polyurethane foam product for dishwashing was prepared by mixing an aqueous mixture containing (by weight) the following ingredients with 33.3 g of a hydrophilic urethane prepolymer to obtain a polymeric aqueous mixture:

[0206]Component Weight

[0207] Water 26.5g

[0208] Feldspar abrasive 200 mesh 24.63g

[0209] A1120 Silane Union Carbide 0.2g

[0210] Laurimide DEA Chemron 1.29g

[0211] Sodium ether sulfonate Chemron 6.66g

[0212] Alpha Olephin Sulphonate 40% Pilot 5.46g

[0213] Pluronic F88 BASF 0.8g

[0214] Germaben 2 Sutton Labs 0.62g

[0215] Citric acid 0.05g

[0216] Pigment 0.10g

[0217] Spice 0.30g

[0218] Superabsorbent HS-80 0.1g

[0219] Stockhausen

[0220] The preparation method was repeated and the test was carried out, using test results showing that the number of washes that could be washed for the test article was doubled. It was concluded that the retention capacity of the hydrophilic combination of superabs...

Embodiment 3

[0222] Using the same components as in Example 2 above, except that the superabsorbent HB Stockhausen powder was replaced by the following components, a controlled-release polyurethane foam product for dishwashing with an abrasive nonwoven fibrous material on at least one surface thereof was prepared .

[0223] Substitute Component Weight Percentage

[0224] Superabsorbent (manufactured on site) 0.5%

[0225] (Containing 4.78wt% Magnesium Electrons Baycoat 20

[0226] H.B. Fuller PD-2072)

[0227] This superabsorbent differs from the H.B. Stockhausen superabsorbent in that it prevents the viscosity of the aqueous mixture from increasing too rapidly, as occurs when the Stockhausen superabsorbent is added to the aqueous mixture as described in Example 2.

[0228] This aqueous mixture was formed into molded foam products and tested in the same manner as described in Example 1. The test results were at least equal to or better than those obtained for the molded foam product of...

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Abstract

Polyurethane foam products with controlled release of agents and additives, if any, are formed from the reaction products of an aqueous formulation of a limited quantity of superabsorbent polymer, an agent or agents from the group of detergents, abrasives, waxes, polishes, drugs, cosmetics, biologicals, volatiles, odor absorbing and controlling compositions and water soluble chemicals, optionally selective additives, and water with a predetermined ratio of hydrophilic urethane prepolymer to provide a polymerizing mixture. The agents and additives, if any, are incorporated directly into the matrix of the formed foam product to increase the number of times that the formed foam products can be used. The products and methods include a formed foam product with an abrasive material uniformly dispersed therein and / or formed on at least one exterior face of the products. Sized granular formed foam product can be comminuted to provide filters materials and animal litter.

Description

field of invention [0001] The present invention relates generally to hydrophilic polyurethane foam composites for use in various industrial, commercial, household, personal care, cleaning and other products, and more particularly to pads, sheets of materials consisting of hydrophilic polyurethane foam materials, molded shapes or granules, the hydrophilic polyurethane foam contains a limited amount of superabsorbent polymers to control the use of agents such as detergents, soaps (soaps), waxes, polishes, Release of drugs, cosmetics, biologicals, volatiles and chemicals. For other applications and uses, abrasives may optionally be added or applied to at least one surface of the formed product. Background technique [0002] As described in U.S. Patent 5,976,847, when the aqueous formulation of the present invention (aqueous formulation) comprising superabsorbent polymers, reagents, and an appropriate amount of water is mixed with a hydrophilic urethane prepolymer (hydrophilic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L15/00C08G18/10C08J9/00A01K1/015A61K8/00A61K8/02A61Q19/10C08G101/00C11D3/37C11D17/04
CPCC11D3/3726C11D17/042A01K1/0152A01K1/0155C11D17/00
Owner H H BROWN SHOE TECH