Particle-Reinforced Thermoplastic Polyurethane

Title: COMPOSITION AND ARTICLE COMPRISING THERMOPLASTIC POLYURETHANE AND PARTICULATE ENGINEERING POLYMER

 Number/Link: WO2015/031292

Applicant/Assignee: SABIC

Publication date: 5-03-2015

Gist”: TPU is reinforced with ultrafine particles made from engineering thermoplastics having a melting point of over 200°C.

Why it is interesting: Particulate polyarylsulfone, polyimide, poly(phenylene sulfide) or polyamide, with a melting point or glass transition higher than 200°C and average particle size between 5 and 200 μm, is melt-blended with TPU at a temperature below 200°C and in an amount of 10-30% (w/w).  Alternatively the particles could be mixed (“slurried”) with the polyol and/or isocyanate used to produce the TPU.  The resulting composite is said to have increased hardness, tensile strength and heat resistance.
Sabic is becoming quite active in polyurethane innovation and is apparently looking for synergies with its engineering thermoplastics business.

Poly (1,4-phenylene sulfide) (PPS)

Poly (1,4-phenylene sulfide) (PPS)

TPU from PPE Diols

Title: THERMOPLASTIC POLYURETHANE AND ASSOCIATED METHOD AND ARTICLE

 Number/Link: WO2014/209934

Applicant/Assignee: Sabic

Publication date: 31-12-2014

Gist”: Thermoplastic Polyurethanes based on polyphenylene ether diols

Why it is interesting: This invention relates to thermoplastic polyurethanes prepared from hydroxyl ended polyphenylene ethers (PPE) and diisocyanates.  Optionally the PPE diols can be blended with ‘conventional’ polyether or polyester diols and chain extenders.  The resulting TPUs are reported to have increased chemical resistance and hydrophobicity. In the examples copolymers of 2,6-dimethylphenol and 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane with molecular weight between about 1000 and 3000 are reacted (in solvent)with MDI or TDI using DBTDL as a catalyst. The resulting thermoplastic materials had a Tg of about 160 to 170°C.  While these could be interesting engineering thermoplastics, I guess they would be difficult to produce and difficult to process.

PPE diol used in the invention. Q5 and Q6 preferably methyl.

PPE diol used in the invention. Q5 and Q6 preferably methyl.

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