# US 10,119,050 B2 · Adhesive sealing composition

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- Number: US 10,119,050 B2
- Document ID: US10119050B2
- Status: Granted
- Kind: B2
- Application number: 15/317,272
- Filed: 2015-06-09
- Published: 2017-05-18
- Granted: 2018-11-06
- Earliest claimed: 2014-06-26
- Assignees: Arkema France
- Applicants: Arkema France
- Inventors: Clio Cocquet; Betty Laurent; Samuel Devisme
- Web page: https://patentgrep.com/patent/US10119050B2

## CPC

- C09J 123/0869: {Acids or derivatives thereof}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/082: comprising vinyl resins; comprising acrylic resins
- B32B 15/085: comprising polyolefins
- B32B 15/09: comprising polyesters
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 27/08: of synthetic resin
- B32B 27/10: of paper or cardboard
- B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers}
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/308: {comprising acrylic (co)polymers}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/34: comprising polyamides
- B32B 27/36: comprising polyesters
- B32B 37/153: {at least one layer is extruded and immediately laminated while in semi-molten state}
- C08K 5/0008: {Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59}
- C08K 5/20: Carboxylic acid amides
- C08L 23/0869: with unsaturated acids, e.g. [meth]acrylic acid; with unsaturated esters, e.g. [meth]acrylic acid esters
- C08L 33/08: Homopolymers or copolymers of acrylic acid esters
- C09J 11/06: organic
- B32B 2311/24: Aluminium
- B32B 2323/10: Polypropylene
- B32B 2325/00: Polymers of vinyl-aromatic compounds, e.g. polystyrene
- B32B 2333/08: Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate
- B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- C09J 123/10: Homopolymers or copolymers of propene
- 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)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

An adhesive composition that can be used in an extrusion-coating process for application to a support or in an extrusion-laminating process in order to bond several supports of different or identical nature to one another, over a wide temperature range, including: from 91% to 98% by weight of the composition, of a copolymer of ethylene and of alkyl acrylate; at least one tackifying resin; processing aids, wherein the tackifying resin represents between 1.5% and 5.5% of the weight of the composition and the processing aids represent between 0.5% and 3.5% of the weight of the composition and the anti-blocking agent represents, in the processing aids, at least 60% by weight of the aids. Also, a film of the composition and a multilayer structure that includes this film.

## Claims

### Claim 1

An adhesive composition, configured for use in an extrusion-coating process for application to a support or in an extrusion-lamination process for adhesively bonding together several supports which are or are not different in nature, the adhesive composition comprising:
from 91% to 98% by weight of a copolymer of ethylene and of alkyl acrylate;
at least one tackifying resin;
processing additives comprising at least one antiblock agent and one slip agent,
wherein the tackifying resin represents between 1.5% and 5% of the weight of the composition, wherein said additives represent between 0.5% and 3.5% of the weight of the composition, and wherein the antiblock agent represents, in the processing additives, at least 60% by weight of said processing additives.

### Claim 2 (depends on 1)

The composition as claimed in claim 1, wherein the tackifying resin represents between 3% and 4% of the weight of the composition.

### Claim 3 (depends on 1)

The composition as claimed in claim 1, wherein the acrylate content in the copolymer of ethylene and of alkyl acrylate is between 15% and 30% of the weight of said copolymer.

### Claim 4 (depends on 1)

The composition as claimed in claim 1, wherein the copolymer of ethylene and of alkyl acrylate consists of a copolymer of ethylene and of methyl acrylate.

### Claim 5 (depends on 1)

The composition as claimed in claim 1, wherein the MFI of the copolymer is between 5 g/10 min and 15 g/10 min at 190° C., 2.13 kg.

### Claim 6 (depends on 1)

The composition as claimed in claim 1, wherein the processing additives are present at between 1.5% and 2.5% by weight of said composition.

### Claim 7 (depends on 1)

The composition as claimed in claim 1, wherein the processing additives consist solely of at least one antiblock agent and at least one slip agent, the antiblock agent representing at least 70% by weight of said additives.

### Claim 8 (depends on 1)

The composition as claimed in claim 1, wherein the composition consists of the copolymer, the tackifying resin and said processing additives.

### Claim 9 (depends on 1)

A sealing film consisting of a composition as claimed in claim 1, wherein the sealing film has a thickness between 10 and 20 micrometers (μm).

### Claim 10 (depends on 9)

A multilayer structure comprising at least two films, one of which is as claimed in claim 9, wherein the second film is chosen from aluminum, paper or board, cellophane, films based on polyethylene, polypropylene, polyamide, polyester, polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) or polyacrylonitrile (PAN) resins, these films being or not being oriented, being or not being metallized and being or not being treated physically or chemically, and films coated with a thin inorganic barrier layer.