FLEXIBLE POLYURETHANE FOAM AND METHOD FOR ITS PRODUCTION

• Main Authors: AKAGI ETSUKO, KIMURA YUUJI, KURIBAYASHI KATSUJI, WADA HIROSHI, SASAKI TAKAYUKI, HARADA HISAKAZU
• Format: Patent
• Language: English; Korean
• Published: 09.06.2003
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PURPOSE: Provided are a flexible polyurethane foam and a method for producing the same by using a polyol having a high molecular weight and low hydroxyl value in an open state. CONSTITUTION: The method comprises reacting a polyol with a polyisocyanate compound in the presence of a catalyst, a blowing agent and a foam stabilizer, wherein as the polyol, a polyol having a hydroxyl value of at most 15 mgKOH/g is used. The polyol has an unsaturation value of at most 0.05 meq/g, is a polyol produced by means of a double metal cyanide complex catalyst, and contains fine polymer particles. In the method, as the foam stabilizer, a silicone type foam stabilizer having a silicone content of from 10 to 50 mass%, is used. Also, in the method, as the polyisocyanate compound, at least one member selected from the group consisting of tolylene diisocyanate, diphenylmethane diisocyanate, polymethylenepolyphenyl polyisocyanate, a tolylene diisocyanate modified product, a diphenylmethane diisocyanate modified product, and a polymethylenepolyphenyl polyisocyanate modified product, is used. 수산기가가 15 mgKOH/g 이하인 폴리올을 사용하는 것을 특징으로 하며, 촉매, 발포제, 폼 안정제의 존재하에 폴리올과 폴리이소시아네이트 화합물을 반응시키는 것을 포함하는, 개방 상태에서 연질 폴리우레탄 폼의 제조 방법을 제공한다.