# US 2020/0399511 A1 · New additive to improve adhesive compositions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399511 A1 - Document ID: US20200399511A1 - Status: Published application - Kind: A1 - Application number: 16/962,166 - Filed: 2019-01-15 - Published: 2020-12-24 - Earliest claimed: 2018-01-15 - Assignees: C-IP S.A. - Applicants: C-IP S.A. - Inventors: Philippe Ceulemans; Olivier Ceulemans - Web page: https://patentgrep.com/patent/US20200399511A1 ## CPC - C09J 11/00: Features of adhesives not provided for in group C09J9/00, e.g. additives - C09J 133/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 29/005: {next to another layer of paper or cardboard layer} - B32B 29/08: Corrugated paper or cardboard - B32B 37/12: characterised by using adhesives - C09J 7/21: Paper; Textile fabrics - C09J 11/04: inorganic - C09J 11/06: organic - C09J 103/02: Starch; Degradation products thereof, e.g. dextrin - C09J 129/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids - C08K 3/34: Silicon-containing compounds - C08K 13/02: Organic and inorganic ingredients - C09J 11/08: Macromolecular additives - C09J 2301/408: additives as essential feature of the adhesive layer - C09J 2403/00: Presence of starch - C09J 2433/00: Presence of (meth)acrylic polymer - 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) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) ## Abstract Disclosed are an additive composition for an adhesive composition as well as an adhesive composition itself that is based on starch, dextrin or polyvinyl alcohol as the adhesive component. The additive composition includes a cross-linked carbomer and a metasilicate of an alkali metal or an alkaline earth metal in a ratio between 0.50 and 5.00, and with the metasilicate being present in a concentration of at least 1.70% wt in the additive composition in the form of a dry powder mixture. Further disclosed are kits in parts as well as a method for the production of these products, as well as uses for these products. ## Claims ### Claim 1 An additive composition for an adhesive composition, the additive composition being in a form selected from an aqueous composition, a dry powder mixture and a kit in parts, and the additive composition comprising a cross-linked carbomer and a metasilicate of a metal selected from an alkali metal, an alkaline earth metal, and combinations thereof, wherein the carbomer and the metasilicate are present in the additive composition in a weight ratio of carbomer over metasilicate which is higher than 0.50 and at most 2.50, and wherein, if the additive composition is in the form of a dry powder mixture, the metasilicate is present in the dry powder mixture in a concentration of at least 1.70% wt. ### Claim 2 (depends on 1) The composition according to claim 1 wherein the metasilicate has a molar ratio of silica (SiO2) to metal oxide (MexO), in which x may be equal to 1 or 2, in the range of 2.17:1 to 3.87:1. ### Claim 3 (depends on 1) The composition according to claim 1 wherein the alkali metal metasilicate is selected from the group consisting of sodium metasilicate, potassium metasilicate and lithium metasilicate. ### Claim 4 (depends on 1) The composition according to claim 1 wherein the carbomer is a water soluble polymer which is derived from an unsaturated acid. ### Claim 5 (depends on 1) The composition according to claim 1 wherein the carbomer is in a form selected from a powder, a gel, and a solution. ### Claim 6 (depends on 1) The composition according to claim 1 wherein the metasilicate is in a form selected from a powder, a crystal, a gel, and a solution. ### Claim 7 (depends on 5) The composition according to claim 5 wherein the carbomer and the metasilicate are in the form of a powder. ### Claim 8 (canceled) ### Claim 9 (depends on 1) The composition according to claim 1 in any one of the prescribed forms excluding the dry powder mixture, wherein the metasilicate is present in a concentration in the range of at least 0.01% wt and optionally at most 75% wt. ### Claim 10 (depends on 1) The composition according to claim 1 further comprising a compound selected from a boron containing compound and a boron containing compound alternative selected from a zirconium containing compound, a hafnium containing compound and an aluminium containing compound. ### Claim 11 (depends on 9) The composition according to claim 9 being an aqueous suspension of the boron containing compound, the additive further comprising an additional dispersant which is selected from the group consisting of carboxymethyl cellulose (CMC), cellulose gum, gum arabic and xanthan gum. ### Claim at position 12 12-16. (canceled) ### Claim 17 (depends on 1) An adhesive composition being in a form selected from an aqueous composition, a dry powder mixture and a kit in parts, the adhesive composition comprising at least one adhesive component selected from starch, dextrin and polyvinyl alcohol, the composition further comprising an amount of the additive composition according to claim 1. ### Claim at position 14 18-34. (canceled) ### Claim 35 (depends on 1) A method of improving performance of an adhesive composition, comprising adding the additive composition according to claim 1 to the adhesive composition. ### Claim 36 (depends on 35) The method according to claim 35 wherein the adhesive composition comprises at least one of starch, dextrin, and polyvinyl alcohol. ### Claim 37 (depends on 17) A method of using the adhesive composition according to claim 17 to form an adhesive bond with a substrate to produce an article comprising the substrate and the adhesive bond. ### Claim 38 (canceled) ### Claim 39 (depends on 17) A method for producing an article comprising the step of applying the adhesive composition according to claim 17 to a substrate selected from a sheet of fibres, cloth, paper, cardboard and corrugated cardboard.