# US 2019/0375889 A1 · Foamed composition

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- Number: US 2019/0375889 A1
- Document ID: US20190375889A1
- Status: Published application
- Kind: A1
- Application number: 16/477,332
- Filed: 2018-01-16
- Published: 2019-12-12
- Earliest claimed: 2017-01-20
- Assignees: Dsm IP Assets B.V.
- Applicants: DSM IP Assets B.V.
- Inventors: Peter ROOZEMOND; Lidong ZHENG; Ellen VAN HEMELRIJCK
- Web page: https://patentgrep.com/patent/US20190375889A1

## CPC

- C08G 63/672: Dicarboxylic acids and dihydroxy compounds
- C08J 9/0023: {containing oxygen}
- C08J 9/0038: {containing phosphorus}
- C08J 9/122: {Hydrogen, oxygen, CO2, nitrogen or noble gases}
- C08K 5/0016: {Plasticisers}
- C08K 5/523: with hydroxyaryl compounds
- C08L 67/025: {containing polyether sequences}
- C08G 2110/0058: ≥50 and <150kg/m3
- C08G 2110/0066: ≥ 150kg/m3
- C08G 2410/00: Soles
- C08J 2203/06: CO2, N2 or noble gases
- C08J 2300/26: Elastomers
- C08J 2367/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds; (C08J2367/06 takes precedence)
- C08J 2371/02: Polyalkylene oxides
- C08L 2203/14: used for foams
- C08L 2205/06: having improved processability or containing aids for moulding methods
- C08L 2207/04: Thermoplastic elastomer
- C08L 2207/322: Liquid component is processing oil
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- 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

The invention relates to a foamed composition comprising a thermoplastic copolyester elastomer in an amount of between 70 to 99 wt % and a plasticizer in an amount of between 1 to 30 wt % based on the total amount of the composition and articles comprising the foamed composition, as well as a process for preparing such foamed composition.

## Claims

### Claim 1

Foamed composition comprising a thermoplastic copolyester elastomer in an amount of between 70 to 99 wt %, and a plasticizer in an amount of between 1 to 30 wt % based on the total amount of the composition.

### Claim 2 (depends on 1)

Foamed composition according to claim 1, wherein the thermoplastic copolyester elastomer comprises hard segments built up from polyester repeating units derived from at least one aliphatic diol and at least one aromatic dicarboxylic acid or an ester thereof, and soft segments chosen from the group consisting of aliphatic polyether, aliphatic polyester, aliphatic polycarbonate, dimer fatty acids and dimer fatty diols and combinations thereof.

### Claim 3 (depends on 1)

Foamed composition according to claim 1, wherein the hard segments are chosen from the group consisting of ethylene terephthalate (PET), propylene terephthalate (PPT), butylene terephthalate (PBT), polyethylene bibenzoate, polyethelyene naphatalate (PEN), polybutylene bibenzoate, polybutylene naphatalate, polypropylene bibenzoate and polypropylene naphatalate and combinations thereof and the soft segments are chosen from the group consisting of aliphatic polyether, aliphatic polyester, aliphatic polycarbonate, dimer fatty acids and dimer fatty diols and combinations thereof.

### Claim 4 (depends on 2)

Foamed composition according to claim 2, wherein the hard segment is chosen from PBT or PET and the soft segment is chosen from the group consisting of polybutylene adipate (PBA), poly(ethylene oxide) (PEO), polypropylene oxide (PPO), polytetramethylene oxide (PTMO),), PEO-PPO-PEO and combinations thereof.

### Claim 5 (depends on 1)

Foamed composition according to claim 1, wherein the amount of plasticizer is between 8 and 20 wt % with respect to the total amount of the composition.

### Claim 6 (depends on 1)

Foamed composition according to claim 1, wherein the plasticizer is chosen from the group consisting of (tere)phthalates and esters thereof, dibasic acid esters, mellitates and esters thereof, cyclohexanoate esters, citrate esters, phosphate esters, modified vegetable oil esters, benzonate esters, and petroleum oils and combinations thereof.

### Claim 7 (depends on 1)

Foamed composition according to claim 1, wherein the plasticizer is chosen from the group consisting of Triphenyl phosphate (TPP), tert-Butylphenyl diphenyl phosphate (Mono-t-but-TPP), di-tert-butylphenyl phenyl phosphate (bis-t-but-TPP), Tris(p-tert-butylphenyl) phosphate (tri-t-but-TPP), Resorcinol bis (Diphenyl Phosphate) (RDP), dichloropropyl phosphate, Bisphenol A bis-(Diphenyl Phosphate) (BDP), tricresyl phosphate (TCP), triethyl phosphate, tributyl phosphate (TBP), tri-2-ethylhexyl phosphate, trimethyl phosphate, epoxidized soybean oil (ESO), epoxidized palm oil (EPO), epoxidized linseed oil (ELO), argan oil and combinations thereof.

### Claim 8 (depends on 1)

Foamed composition according to claim 1, wherein the density of the foamed composition is between 0.1 to 0.7 g/cm3.

### Claim 9 (depends on 2)

Foamed composition according to claim 2, wherein the soft segment is chosen from the group consisting of poly(ethylene oxide) (PEO), polypropylene oxide (PPO) and polytetramethylene oxide (PTMO), PEO-PPO-PEO, and combinations thereof and the density of the foamed composition is between 0.10 and 0.30 g/cm3.

### Claim 10 (depends on 1)

Article comprising the foamed composition according to claim 1.

### Claim 11 (depends on 10)

Article according to claim 10, wherein the article is a inner shoe sole or a midsole.

### Claim 12 (depends on 1)

Process for preparing a foamed composition according to claim 1, comprising the following steps:
a. Providing a composition comprising a thermoplastic copolyester elastomer in an amount of between 70 to 99 wt %, and a plasticizer in an amount of between 1 and 30 wt % based on the total amount of the composition;
b. Bringing the composition to a foaming temperature of between (Tm-100) ° C. and Tm, in which Tm is the melting temperature of the hard segment of the thermoplastic copolyester elastomer composition as measured according to ISO 11357-1:1997 by DSC in the second heating curve, with a heating and cooling rate of 10° C. per min, under nitrogen atmosphere;
c. Providing a physical blowing agent under pressure to the composition while maintaining the pressure and allowing the physical blowing agent to substantially dissolve in the composition;
d. Releasing the pressure thereby forming the foamed composition.

### Claim 13 (depends on 12)

Process according to claim 12 wherein the composition comprising thermoplastic copolyester elastomer comprises hard segments chosen from PBT or PET and soft segments chosen from the group consisting of polybutylene adipate (PBA), poly(ethylene oxide) (PEO), polypropylene oxide (PPO), polytetramethylene oxide (PTMO),), PEO-PPO-PEO and combinations thereof and the plasticizer is chosen from group consisting of Triphenyl phosphate (TPP), tert-Butylphenyl diphenyl phosphate (Mono-t-but-TPP), di-tert-butylphenyl phenyl phosphate (bis-t-but-TPP), Tris(p-tert-butylphenyl) phosphate (tri-t-but-TPP), Resorcinol bis (Diphenyl Phosphate) (RDP), dichloropropyl phosphate, Bisphenol A bis-(Diphenyl Phosphate) (BDP), tricresyl phosphate (TCP), triethyl phosphate, tributyl phosphate (TBP), tri-2-ethylhexyl phosphate, trimethyl phosphate, epoxidized soybean oil (ESO), epoxidized palm oil (EPO), epoxidized linseed oil (ELO), argan oil and combinations thereof.