RELEASE AGENT COMPOSITION FOR MOLDING POLYURETHANE FOAM AND METHOD FOR PRODUCING FLEXIBLE POLYURETHANE FOAM

• Main Author: NASA TOSHIHISA
• Format: Patent
• Language: English; Japanese
• Published: 02.02.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a release agent composition having excellent durability, which has excellent releasability against a flexible polyurethane foam molded body and can be continuously molded.SOLUTION: The release agent composition contains: (A) straight-chain polydiorganosiloxane having silanol groups at both terminals and having a viscosity of 3,000 to 50,000 Pa s; (B) a crosslinking catalyst selected from organic titanium compounds and organic zirconium compounds; and (C) a naphthene-based solvent or an isoparaffinic solvent having a flash point of 40°C or more and a boiling point of 100 to 230°C, a content of the (A) straight-chain polydiorganosiloxane is 0.1 to 30 mass%, and a mass ratio ((B)/(A)) of contents of the (B) crosslinking catalyst and the (A) straight-chain polydiorganosiloxane is 1/10 to 1/1.SELECTED DRAWING: None 【課題】軟質ポリウレタンフォーム成形体に対して優れた離型性を有し、かつ連続成形を可能にする耐久性に優れた離型剤組成物を提供する。【解決手段】この離型剤組成物は、（Ａ）粘度が３，０００〜５０，０００Ｐａ・ｓである両末端にシラノール基を有する直鎖状のポリジオルガノシロキサンと、（Ｂ）有機チタン化合物と有機ジルコニウム化合物から選ばれる架橋触媒と、（Ｃ）引火点が４０℃以上で沸点が１００〜２３０℃のナフテン系溶媒またはイソパラフィン系溶媒を含有し、（Ａ）直鎖状ポリジオルガノシロキサンの含有量が０．１〜３０質量％であり、かつ（Ｂ）架橋触媒と（Ａ）直鎖状ポリジオルガノシロキサンとの含有量の質量比（（Ｂ）／（Ａ））が１／１０〜１／１である。【選択図】なし