# US 10,370,797 B2 · Cellulosic fiber-based substrate, method of production and use as a substrate for adhesive tapes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,797 B2 - Document ID: US10370797B2 - Status: Granted - Kind: B2 - Application number: 15/514,210 - Filed: 2015-09-25 - Published: 2017-10-12 - Granted: 2019-08-06 - Earliest claimed: 2014-09-26 - Assignees: A. Ahlstrom Corporation - Applicants: Ahlstrom Corporation - Inventors: Menno Dufour - Web page: https://patentgrep.com/patent/US10370797B2 ## CPC - D21H 23/24: during paper manufacture - C09J 7/201: {characterised by the release coating composition on the carrier layer} - C09J 7/21: Paper; Textile fabrics - D21H 19/12: applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds - D21H 19/20: comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds - D21H 19/24: comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds - D21H 19/32: obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule - D21H 19/34: comprising cellulose or derivatives thereof - C09J 2203/31: as a masking tape for painting - C09J 2400/283: in the substrate - D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) ## Abstract A cellulosic fiber-based adhesive tape substrate, at least one side of which is coated with an aqueous mixture of: a) at least one organic polymer having pendant groups with at least one vinyl function; b) at least one polysiloxane comprising at least one hydrogenosiloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms; c) at least one hydrosilylation catalyst. ## Claims ### Claim 1 A cellulosic fiber-based adhesive tape substrate, wherein at least one side of the substrate is directly coated with a single layer comprising an aqueous mixture of: a) at least one organic polymer comprising pendant groups with at least one vinyl function, wherin the organic polymer comprises polyvinyl alcohol; b) at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms; and c) at least one hydrosilylation catalyst; wherein the at least one polysiloxane cross-links the polyvinyl alcohol via the at least one vinyl function without or prior to any subsequent coating step. ### Claim 2 (depends on 1) The substrate according to claim 1, wherein at least some of the polyvinyl alcohol is reacted by acetylation and/or hemiacetylation with at least one organic molecule (OM1) comprising at least one aldehyde function and at least one vinyl function, and/or at least some of the polyvinyl alcohol is reacted with at least one organic molecule (OM2) comprising at least one epoxy function and at least one vinyl function. ### Claim 3 (depends on 2) The substrate according to claim 2, wherein: the molecule OM1 is a molecule with the formula HCO—(R2)—CH═CH2, wherein R2 is a linear and/or cyclic hydrocarbon chain, which optionally contains at least one heteroatom (X); and the molecule OM2 is a molecule having the formula H2C—O—CH—(R3)—CH═CH2, wherein R3 is a linear, branched and/or cyclic hydrocarbon chain —(C)x—, which optionally contains at least one heteroatom (X). ### Claim 4 (depends on 1) The substrate according to claim 1, wherein the polysiloxane is selected from the group consisting of polyhydrogenmethylsiloxane (PHMS); poly(hydrogenmethyl-co-dimethyl) siloxane (PHDMS) copolymer; cyclic-polyhydrogenomethylsiloxane; and cyclic poly(hydrogenomethyl-co-dimethyl) siloxane (PHDMS) copolymer. ### Claim 5 (depends on 1) The substrate according to claim 1, wherein: the organic polymer is obtained through the modification of polyvinyl alcohol (PVA) by undecylenic aldehyde, and the polysiloxane is polyhydrogenomethylsiloxane (PHMS). ### Claim 6 (depends on 1) The substrate according to claim 1, wherein the single layer by percent dry weight: between 70 and 98% of the organic polymer, between 1 and 20% of the polysiloxane, between 1 and 20% of the catalyst, and wherein the single layer has a ratio of Si—H of the polysiloxane to vinyl functional groups of the organic polymer of between 1 and 5. ### Claim 7 (depends on 6) The substrate according to claim 6, wherein the single layer comprises by percent dry weight: between 80 and 98% of the organic polymer, between 1 and 11% of the polysiloxane, between 1 and 11% of the catalyst, and wherein a ratio of Si—H of the polysiloxane to vinyl functional groups of the organic polymer of between 1 and 5. ### Claim 8 (depends on 1) The substrate according to claim 1, wherein the composition has a dry basis weight of between 1 and 10 g/m2 relative to a surface area of the substrate. ### Claim 9 (depends on 1) The substrate according to claim 1, wherein the catalyst is platinum based. ### Claim 10 (depends on 1) The substrate according to claim 1, wherein the substrate is crepe paper. ### Claim 11 (depends on 1) A masking tape which comprises the cellulosic-fiber based substrate according to claim 1. ### Claim 12 A cellulosic fiber-based adhesive tape substrate comprising: a coating on a surface thereof, the coating consisting essentially of a cross-linked polyvinylalcohol comprising pendant groups with at least one vinyl function, wherein the polyvinylalcohol is cross-linked by hydrosilylation with at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, and wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms. ### Claim 13 A cellulosic fiber-based adhesive tape substrate comprising: a coating on a surface thereof, the coating consisting essentially of a cross-linked polyvinylalcohol comprising pendant groups with at least one vinyl function and at least one hydrosilylation catalyst, wherein the polyvinylalcohol is cross-linked with at least one polysiloxane comprising at least one hydrogen siloxane monomer —(O—SiR1H)—, and wherein R1 is a linear or branched and/or cyclic hydrocarbon chain optionally containing heteroatoms. ### Claim 14 A method to produce the cellulosic-fiber based substrate comprising: 1) forming a substrate from an aqueous suspension of cellulosic fibers on a paper machine; 2) preparing a composition by mixing in an aqueous medium: a) at least one organic polymer comprising pendant groups with at least one vinyl function, wherein the organic polymer comprising polyvinyl alcohol; b) at least one polysiloxane comprising the at least one hydrogen siloxane monomer —(O—SiR1H)—, wherein R1 is a linear or branched and/or cyclic hydrocarbon chain which may contain heteroatoms; and c) least one hydrosilylation catalyst; 3) coating a single layer of the composition onto at least one side of the substrate, wherein the at least one polysiloxane cross-links the polyvinyl alcohol via the at least one vinyl function without or prior to any subsequent coating steps; and 4) drying the single layer of the composition coated onto the at least one side of the substrate.