Basic knowledge of rigid polyurethane: Cyclopentane, water resistance (polyether type)
Explanation of the differences between polyether-based and polyester-based materials! Introduction to the basics of rigid polyurethane.
I will introduce the differences between polyether-based and polyester-based materials. The molecular structures of polyester-based urethane and polyether-based urethane are different. Polyether-based urethane contains -O- within its bonding molecules, and in principle, this molecular structure is not affected by H2O (water). In other words, it is a material that is strong against water. An example of this is its use in bathtub covers. On the other hand, polyester-based urethane contains -COO- within its bonding molecules, and this molecular structure tends to react with H2O (water) and decompose into -COOH (acid) and -OH (alcohol). Therefore, polyester-based urethane is generally said to have inferior water resistance. *There are also polyester-based materials with high water resistance. *For more details, please refer to the PDF materials or feel free to contact us.
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【Specifications】 ■Material: Resin, Urethane, Thermosetting Resin ■Lot: 100 to 1,000 pieces *For more details, please refer to the PDF document or feel free to contact us.
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【Industry】 ■Automotive (Mass Production) ■Construction and Civil Engineering Materials ■Medical Devices *For more details, please refer to the PDF document or feel free to contact us.
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[2026/9/18 (Fri) 10:30-16:30] Notice of Participation in the Composite Materials and Carbon Fair 2026
【Exhibition】 Exhibition Information: Composite Materials & Carbon Fair 2026 Osaka Industry Creation Center, 3rd & 4th Floors *Reception on 4th Floor 1-4-5 Honmachi, Chuo-ku, Osaka 541-0053 【Date and Time】 September 18, 2026 (Friday) 13:30 - 16:30 【Transportation】 Get off at Osaka Metro "Sakaisuji-Honmachi Station" Approximately 5 minutes on foot from Exit 1 of the Chuo Line and Exit 12 of the Sakaisuji Line 【Exhibition Content Description】 Integrated molding of polyurethane for insulation, adhesion, and weight reduction 【Exhibits】 Rigid polyurethane molded products High-end insulated bath covers Cooling boxes Vacuum insulated panel encapsulated panels Insulated resin tanks
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Notice of the Adhesive and Bonding Technology Exhibition 2025 on December 12, 2025 (Friday) from 10:30 to 16:30.
**Exhibition** Exhibition Information: Adhesive and Bonding Technology Exhibition 2024 Osaka Industry Creation Center, 3F・4F *Reception on 4F 〒541-0053 1-4-5 Honmachi, Chuo Ward, Osaka City **Date and Time** December 12, 2025 (Friday) 13:30 - 16:30 **Transportation** Get off at Osaka Metro "Sakaisuji-Honmachi Station" Central Line Exit 1, Sakaisuji Line Exit 12, each about a 5-minute walk **Exhibition Content Description** Integrated molding of insulation, bonding, and lightweight polyurethane **Exhibits** Rigid polyurethane molded products High-quality insulated bath covers Cooler boxes Vacuum insulation material encapsulated panels Insulated resin tanks
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Tada Plastic Industry Co., Ltd. is a specialized manufacturer of injection molding, polyurethane foam molding, and micropumps. We turn ideas into reality with technology, providing reliable quality, cost, and delivery times to our customers. Please feel free to consult us if you have any requests.