Resumen de: CN120712317A
The invention relates to a sealing gas material consisting at least predominantly of a bio-based raw material. There are four major types of materials: 1) sealing a gas bubble sheet, 2) sealing an air pillow, 3) sealing a gas foam sheet, and 4) sealing a gas foam 3D object. These materials may be used for protection, thermal insulation and/or construction. Typically, these materials are prepared by mixing one or more cellulose-based raw materials into an aqueous solution or dispersion forming a structure, and embedding a gas into the solution or dispersion to form a structure having a gas sealed within the material.
Resumen de: KR20250175674A
고분자 복합 재료 및 고분자 복합 필름이 제공된다. 상기 고분자 복합 재료는 고분자 및 베르베린 유도체를 포함하고, 상기 베르베린 유도체는 하기 화학식 1 내지 화학식 4 중에서 적어도 하나의 화학식을 갖는다. 화학식 1 JPEGpat00022.jpg4262 화학식 2 JPEGpat00023.jpg4466 화학식 3 JPEGpat00024.jpg4266 화학식 4 JPEGpat00025.jpg4265
Resumen de: CN120303343A
The composition for a biodegradable film according to one embodiment includes a polyhydroxyalkanoate (PHA) resin and a plasticizer having a melting temperature in a specific range, whereby the composition satisfies a torque applied to a screw at a pressure of 46 bar or less in an extruder during extrusion molding of 70% or less, thus, it is possible to achieve improvements in processability and productivity, and to provide an environmentally friendly biodegradable film and biodegradable product having excellent biodegradability and mechanical properties.
Nº publicación: JP2025540819A 16/12/2025
Solicitante:
金▲発▼科技股▲分▼有限公司
Resumen de: EP4613792A1
Disclosed in the present invention are a biodegradable aliphatic polyester, a preparation method therefor and use thereof. The preparation method for the biodegradable aliphatic polyester of the present invention includes the following steps: dispersing a polyester product obtained by an esterification reaction and a polycondensation reaction in a tetrahydrofuran aqueous solution to carry out contact treatment, and carrying out post-treatment to obtain the biodegradable aliphatic polyester, wherein a duration of the contact treatment is 2 - 20 hours, and a temperature is 20-65°C. The biodegradable aliphatic polyester of the present invention has a whiteness index of ≥20 and an acid number of ≤1.45 mg KOH/g. Through the contact treatment process with the tetrahydrofuran aqueous solution, the low acid number is maintained while the color of the aliphatic polyester is improved, and meanwhile, the aliphatic polyester does not undergo performance degradation.