Fibrous substrates adhered with substituted cellulose ester adhesives and methods relating thereto

A technology of cellulose esters, cellulose polymers, the advantages will be obvious to those skilled in the art, fibrous substrates, such as low-quality areas, can solve less satisfactory adhesion properties, etc. question

Inactive Publication Date: 2015-03-11
CELANESE ACETATE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, alternative options such as polyurethane-based adhesives often have less than satisfactory bonding properties, which results in, for example, low-quality carpet

Method used

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  • Fibrous substrates adhered with substituted cellulose ester adhesives and methods relating thereto
  • Fibrous substrates adhered with substituted cellulose ester adhesives and methods relating thereto
  • Fibrous substrates adhered with substituted cellulose ester adhesives and methods relating thereto

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Example 1. Three substituted cellulose esters and two cellulose esters were produced and analyzed. The cellulose is treated with acetic acid and then mixed with a cooled solution of acetic acid, acetic anhydride and sulfuric acid. The temperature of the resulting mixture was increased and allowed to react for approximately 20 minutes. At this point, the cellulose ester composition is hydrolyzed. To produce substituted cellulose esters, the mixture is hydrolyzed in the presence of additional sulfuric acid. Table 1 below provides the conditions under which the five samples were produced.

[0060] Table 1

[0061]

[0062] This example is believed to demonstrate that substituted cellulose esters (in particular, substituted cellulose acetate ), which are advantageous in the commercial scale production of substituted cellulose esters.

Embodiment 2

[0063] Example 2. Several adhesive compositions (Adhesives 1-5) with different solvents and substituted cellulose acetate compositions were tested for their adhesive performance in multiple wood laminates. In addition, with commercially available ELMER'S GLUE (A poly(vinyl acetate)-based adhesive available from Elmer's Products, Inc.) Two wood laminates were produced and analyzed. Table 2 provides the wood laminate composition, and Table 3 provides the (Model 3366) as a measure of the adhesive performance of various adhesive compositions.

[0064] By visual inspection, the substituted cellulose acetate adhesive of this example is optically clear and has a high gloss, which may be desirable in some commercial applications.

[0065] To form the laminate, two small pieces of wood or two sheets of cardboard were bonded together with Adhesives 1-5 (Table 2) or ELMER’S GLUE A 10% aqueous solution (as indicated) was glued together and allowed to dry. The resulting laminates w...

Embodiment 3

[0072] Example 3. Various additives were added to three binder compositions comprising substituted cellulose acetates according to at least some embodiments described herein. use (Model 3366) The lap shear test tested the resulting compositions for their adhesive properties on wood substrates (1 / 4" pine strips, 1.5" wide). A summary of the results is shown in Tables 4 and 5 below.

[0073] Binder 6 comprised substituted cellulose acetate with approximately 620 mg / kg sulfur. To binder 6 was added varying amounts of ammonium zirconium carbonate. Table 4 provides the lap shear test results for various compositions.

[0074] Table 4

[0075]

[0076] *Average of 6 repetitions

[0077] **Lap shear for 1.5”x1” bonded area

[0078]Binders 7 and 8 comprised substituted cellulose acetate with approximately 520 mg / kg sulfur and approximately 557 mg / kg sulfur, respectively. Additives were added to binders 7 and 8 in varying amounts.

[0079] Table 5 provides the results of t...

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Abstract

Fibrous substrates may be adhered to other substrates utilizing substituted cellulose ester adhesives that comprises a cellulose polymer backbone having an organic ester substituent and an inorganic ester substituent that comprises an inorganic, nonmetal atom selected from the group consisting of sulfur, phosphorus, boron, and chlorine.

Description

Background of the invention [0001] The present invention relates to fibrous substrates bonded to other substrates using substituted cellulose ester adhesives, and articles and methods related thereto. [0002] One of the most common adhesives used in conjunction with fibrous substrates, such as carpet backing, are urea and melamine formaldehyde resins due to their strong bond to many fibrous substrates. However, it is believed that over time these adhesives can release formaldehyde into the surrounding environment, which is undesirable because formaldehyde is a known carcinogen, has a pungent odor, and has been shown to Low doses can cause asthma attacks. [0003] Therefore, formaldehyde-free adhesives are of great interest. However, alternatives such as polyurethane-based adhesives often have less than satisfactory adhesive properties, which results in eg low quality carpets. Therefore, formaldehyde-free adhesives that exhibit comparable or better adhesive properties to ur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B23/10B32B23/14B32B23/20B32B7/12C08L1/10C08J7/00
CPCC09J5/00B32B7/12B32B23/10B32B23/14B32B23/20C09J101/10C08L1/10B32B5/08C08B3/22C08B7/00C09J101/20B32B2262/065B32B2262/0276B32B2262/0261B32B2262/0253B32B2262/105B32B2262/106B32B2262/08B32B2262/067B32B2262/101B32B2307/7163B32B2307/716B32B5/00B32B5/02B32B5/022B32B5/22B32B5/24B32B7/00B32B7/04B32B9/02B32B9/04B32B21/00B32B23/00B32B27/00B32B27/06B32B27/12B32B27/18B32B27/28B32B27/36B32B29/00B32B1/00B32B1/04B32B3/00B32B3/02B32B3/04B32B3/06B32B2262/00B32B2262/02B32B2262/0223B32B2262/0246B32B2262/06B32B2262/062B32B2307/50B32B2307/554B32B2437/00B32B2439/00B32B2439/70B32B2439/80B32B2471/00B32B2471/02B32B2471/04B32B2479/00B32B2607/02Y10T428/31982C09J101/02C09J11/08C09J101/00C08J7/00C09J101/08
Inventor M·库姆斯T·加勒特C·普鲁内斯蒂M·雅各布Y.李(朱莉)X·涂
Owner CELANESE ACETATE LLC
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