欧美亚国产精品网站在线观看_日韩中文字幕视频_91青青青青国产在线观看_欧美亚洲国产大片在线播放_網友分享久久免费国产视频心得_成人区精品一区二区_欧美黄色三级_国产日韩末满十八禁止观看_久热香蕉在线爽青青_亚洲熟妇无码AV在线播放

The polyether polyol CHE-3050F is prepared by using a compound containing an active hydrogen group as an initiator and carrying out ring-opening polymerization reaction with propylene oxide under the action of a catalyst. The product is a BHT-free product and has a wide application range which used in block foam, waterproof coatings, mattresses, furniture, packaging materials and other fields, suitable for the production of medium and high density foam.

The polyether polyol CHE-5603 is prepared by the ring-opening polymerization of a compound containing an active hydrogen group as an initiator and propylene oxide in the presence of a catalyst. The product is a general polyether without BHT and has a wide application range which is mainly used in block foam, mattress, furniture, packaging materials, suitable for the production of high, medium and low density foam, especially suitable for flame composite sponge, can increase the tear and tensile strength.

The polyether polyol CHE-5602 is prepared by the ring-opening polymerization of a compound containing an active hydrogen group as an initiator with ethylene oxide and propylene oxide in the presence of a catalyst, and has a molecular weight of about 3000 which is a BHT-free universal polyether and mainly used in block foam, mattress, furniture and packaging materials. In addition, it is suitable for the production of high, medium and low density foam.