# US 10,369,773 B2 · Dry fibrous material for subsequent resin infusion

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,369,773 B2
- Document ID: US10369773B2
- Status: Granted
- Kind: B2
- Application number: 15/818,259
- Filed: 2017-11-20
- Published: 2018-03-15
- Granted: 2019-08-06
- Earliest claimed: 2011-12-20
- Assignees: Cytec Industries Inc.
- Applicants: Cytec Industries Inc.; Cytec Engineered Materials Inc.
- Inventors: Dominique Ponsolle; Carmelo Luca Restuccia; William Jacobs; Robert Blackburn; Carmelo LoFaro; Richard Price; Marc Doyle; Mitchell Smith; Abdel Abusafieh
- Web page: https://patentgrep.com/patent/US10369773B2

## CPC

- B32B 37/16: with all layers existing as coherent layers before laminating
- B29B 15/12: of reinforcements of indefinite length
- B32B 3/266: {characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12}
- B32B 5/022: {Non-woven fabric}
- B32B 5/024: {Woven fabric}
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 38/04: Punching, slitting or perforating
- B32B 38/08: Impregnating
- B32B 38/164: {Drying}
- C08G 18/168: {Organic compounds}
- C08G 18/4833: {Polyethers containing oxyethylene units}
- C08G 18/4879: {containing aromatic groups}
- C08G 18/755: {and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate}
- C08G 18/833: {by nitrogen containing compounds (by azo compounds C08G18/85)}
- C08K 3/20: Oxides; Hydroxides {(graphene oxides C08K3/042)}
- C08K 5/34922: {Melamine; Derivatives thereof}
- C08K 5/42: Sulfonic acids; Derivatives thereof
- D04H 3/04: in rectilinear paths, e.g. crossing at right angles
- D04H 3/12: with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
- B29C 2793/0036: Slitting
- B29C 2793/0081: before shaping
- B32B 2038/045: {Slitting}
- B32B 2255/02: on fibrous or filamentary layer
- B32B 2255/26: Polymeric coating
- B32B 2262/106: Carbon fibres, e.g. graphite fibres
- B32B 2274/00: Thermoplastic elastomer material
- B32B 2305/20: in the form of a non-woven mat
- B32B 2363/00: Epoxy resins
- B32B 2371/00: Polyethers, e.g. PEEK, i.e. polyether-etherketone; PEK, i.e. polyetherketone
- B32B 2375/00: Polyureas; Polyurethanes
- Y10T 428/24314: Slit or elongated
- Y10T 428/2481: including layer of mechanically interengaged strands, strand-portions or strand-like strips
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Disclosed herein is a dry, self-supporting fibrous material, the fibers of which have been treated with a binder composition. The fibrous material can be slit into tapes or tows that are suitable for use in an Automated Tape Laying (ATL) or Automated Fiber Placement (AFP) process. This fibrous material is suitable for forming preforms which are configured to receive a matrix resin by resin infusion in the manufacturing of structural composite parts.

## Claims

### Claim 1

A fibrous tape having a width of 24 inches or less, comprising:
a ply of structural fibers laminated to a nonwoven veil comprising randomly-arranged carbon fibers;
a first binder composition distributed onto the structural fibers and the nonwoven veil, said binder composition comprising (i) one or more polymers selected from polyhydroxyethers, polyurethanes, a mixture thereof, a copolymer or a reaction product of polyhydroxyether and polyurethane, and (ii) a methoxyalkyl melamine aminoplast cross-linker,
wherein the ply of structural fibers comprises unidirectional carbon fibers, and the fibrous tape is permeable to liquid resin.

### Claim 2 (depends on 1)

The fibrous tape of claim 1, wherein the ply of structural fibers is not bonded to another layer other than the nonwoven veil.

### Claim 3 (depends on 2)

The fibrous tape of claim 2, further comprising a second epoxy-based binder, which comprises one or more multifunctional epoxy resins and a thermoplastic polymer.

### Claim 4 (depends on 1)

The fibrous tape of claim 1, wherein said tape has a width of 1.5 inches or less.

### Claim 5 (depends on 1)

A method comprising laying up a plurality of the fibrous tape of claim 1 in an automated process to form a preform that is permeable to a liquid resin.