# US 5,350,627 A · Coated webs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,350,627 A - Document ID: US5350627A - Status: Granted - Kind: A - Application number: 08/075,115 - Filed: 1993-06-11 - Granted: 1994-09-27 - Earliest claimed: 1993-06-11 - Assignees: Camelot Technologies, Inc. - Inventors: Speros P. Nemphos; Gregory B. Kharas - Web page: https://patentgrep.com/patent/US5350627A ## CPC - D04H 1/64: the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions - D04H 1/587: characterised by the bonding agents used - Y10S 428/913: Material designed to be responsive to temperature, light, moisture - Y10T 442/2025: Coating produced by extrusion - Y10T 442/277: Coated or impregnated cellulosic fiber fabric - D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B) - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Biodegradable polymers may be used as binders for impregnating or coating fibrous webs. The resulting web is degradable and also the fibers within the web may be more easily recycled. ## Claims ### Claim 1 A web of a cellulosic fiber in which at least a portion of the cellulose fibers are contacted with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5. ### Claim 2 (depends on 1) The web according to claim 1, wherein the portion of the web contacted with said binder is at least one surface of the web. ### Claim 3 (depends on 2) The web according to claim 2, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 4 (depends on 2) The web according to claim 2, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 5 (depends on 2) The web according to claim 2, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 6 (depends on 1) The web according to claim 1 wherein the portion of the web contacted with said binder comprises at least one surface of the web and at least a portion of the interior of the web. ### Claim 7 (depends on 6) The web according to claim 6, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 8 (depends on 6) The web according to claim 6, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 9 (depends on 6) The web according to claim 6, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 10 A process for coating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5 which comprises coating said web with a solution comprising from 5 to 25 weight % of said binder in an organic solvent. ### Claim 11 (depends on 10) The process according to claim 10, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 12 (depends on 10) The process according to claim 10, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 1, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 13 (depends on 10) The process according to claim 10, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 14 A process for coating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5 which comprises coating said web with an aqueous dispersion comprising from 20 to 70 weight % of said binder. ### Claim 15 (depends on 14) The process according to claim 14, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 16 (depends on 14) The process according to claim 14, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 17 (depends on 14) The process according to claim 14, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 18 A process for impregnating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5 which comprises coating said web with a solution comprising from 5 to 25 weight % of said binder in an organic solvent. ### Claim 19 (depends on 18) The process according to claim 18, wherein said binder comprises a homopolymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 20 (depends on 18) The process according to claim 18, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 21 (depends on 18) The process according to claim 18, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 22 A process for impregnating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from I to 5 which comprises coating said web with an aqueous dispersion comprising from 20 to 70 weight % of said binder. ### Claim 23 (depends on 22) The process according to claim 22, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 24 (depends on 22) The process according to claim 22, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 25 (depends on 22) The process according to claim 22, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 26 A process for coating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5 which comprises laminating to said web a film of said binder. ### Claim 27 (depends on 26) The process according to claim 26, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 28 (depends on 26) The process according to claim 26, wherein said binder comprises a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula I wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 29 (depends on 26) The process according to claim 26, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms. ### Claim 30 A process for coating a cellulosic web with binder comprising one or more polymers having a molecular weight of greater than 30,000 comprising the residues of one or more monomers of the Formula: --OCR.sub.1 R.sub.2 (CR.sub.3 R.sub.4).sub.n CO-- I wherein in Formula I R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are independently selected from the group consisting of a hydrogen atom and a C.sub.1-4 alkyl radical and n is 0 or an integer from 1 to 5 which comprises extrusion coating said web with said binder. ### Claim 31 (depends on 30) The process according to claim 30, wherein said binder comprises a polymer of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical. ### Claim 32 (depends on 30) The process according to claim 30, wherein said binder is a copolymer or blend comprising from 70 to 10 weight % of monomer residues of Formula wherein n is 0, and one of one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 90 weight % of monomer residues of Formula I wherein n is 1. ### Claim 33 (depends on 31) The process according to claim 31, wherein said binder comprises a copolymer comprising from 70 to 30 weight % of monomer residues of Formula I wherein n is 0, and one of R.sub.1 and R.sub.2 is a hydrogen atom and the other is a methyl radical and from 30 to 70 weight % of monomer residues of Formula I wherein n is 0, and both R.sub.1 and R.sub.2 are hydrogen atoms.