Allbirds shoes are designed without logos, labels or special detailing. They’re constructed from ZQ-certified merino wool (meaning sheep are raised sustainably and humanely according to strict standards). The wool is specially knitted into a superfine weave — each fiber is about 20 percent the width of a human hair — so it’s not scratchy.
Washable insoles also are formed from merino wool fabric, and soles are green polyurethane made from castor bean oil. The idea is to create something not only sustainable but breathable, durable, comfortable and all-purpose.
Arkema has planned to invest 300 million euros for expansion of its bio sourced nylon 11 production in Asia. By establishing this plant, the company would increase the global production of bio sourced nylon 11 by 50%.
The new plant, which will produce both the amino 11 monomer and its polymer, is expected to come on stream in late 2021. The products to be produced would find applications in electronics, 3D printing and automotive industries.
Allbirds, a New Zealand based footwear company has launched woolen running shoes for both men and women. The shoes have an upper wool layer; a castor oil based polyurethane insole and rubber foam sole.
The wool comes from New Zealand and is turned into fabric in Italy, while the shoes are assembled in South Korea.
In 2014, Mats Inc. partnered with Windmöller Flooring Products to deliver an entirely new class of product. That collection is wineo® PURline, an innovative collection of botanol flooring produced with 90% rapidly renewable and natural raw materials.
Wineo PURline is botanol, a plant-based material that’s both odorless and emission-free. Its ingredients—canola oil from rappa seed, castor oil from castor seed, and chalk—are molecularly transformed to create an eco-friendly polyurethane that serves as a durable nonporous floor covering.
Global bio-based polyurethane market is expected to grow at a CAGR of 6.75% during 2016-2020. Among many natural oils, castor oil is primarily used for producing natural oil polyols due to the availability of ready hydroxyl group unlike other oils that require the introduction of hydroxyl group by other procedures.
Apart from adipic acid, bio-based succinic acid and 1,4 butanediol can be combined with the required isocyanates to produce polyurethanes with up to 70% bio content.
Mitsui Chemicals & SKC Polyurethanes Co. Ltd. (MCNS) a 50:50 joint venture of Japan’s Mitsui Chemicals and South Korea’s SKC will establish a polyurethane system house, MCNS Polyurethanes India Pvt Ltd, in Andhra Pradesh with an initial investment of $ 7.3 million (about Rs 49 crore).
The facility to be located at Nellore district will manufacture polyurethane system products and have a capacity of 13,000 tonnes per annum.
Scientists from Columbia performed an experiment to develop a kinetic model for high CO2 pressure carbonation of epoxidized castor oil which can be used for production of thermoset polymers and non-isocyanate polyurethanes.
Results showed that because of the polyfunctional character of the product, it could find applications as a monomer and as a synthetic building block for other bio-based chemicals.
Researchers from India prepared castor oil polyurethane from pre-polymer oftoluene diisocyanate (TDI) and castor oil with dibutyl tin dilaurate (DBTDL) catalyst. Water was used as blowing agent. The rate of forming was increased by increasing catalyst and water content. On other hand the cell size of the PU decreased with increasing amount of the catalyst and water content.
Characterization studies were performed to analyse the properties of synthesized foam.
Scientists from China synthesized hybrid polyurethanes with double-decker silsesquioxane (DDSQ) using castor oil and isophorone diisocyanate (IPDI) as feedstock. Double-decker octaphenyl silsesquioxanetetraol (DDSQ) was prepared and characterized by spectroscopy.
Results showed that with the inclusion of DDSQ, the hydrophobicity of the hybrid material was significantly improved.
Cellulose fibre reinforced composites are considered suitable alternative to plastic products due to the environmental problems caused by the latter. However, pure cellulose fibres have a high hydrophilicity. Moreover, the polar character of these fibres causes their low compatibility with partially or totally hydrophobic polymer matrices.
Owing to the poor wettability and adsorbability towards polymers, the surface modification of the fibres surface is essential, in order to improve the fiber/polymer compatibility and their interfacial adhesion. Hence researchers from France conducted a study to improve the properties of cellulose fibres by modifying the cellulose fibres with trialkoxysilane from castor oil.
Characteristic studies were carried out for the modified cellulose-castor oil polyurethane composites. Results showed that compared with the crude cellulose fibres, the organosilane treatment reduced the hydrophilicity of the natural fibres and increased the fiber/matrix compatibility.