The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2022
Filed:
May. 14, 2019
Covestro Deutschland Ag, Leverkusen, DE;
Dong Bo Zhao, Shanghai, CN;
Weicheng Wu, Shanghai, CN;
Zoe Deng, Shanghai, CN;
Demi Tang, Shanghai, CN;
Liqiang Li, Shanghai, CN;
COVESTRO DEUTSCHLAND AG, Leverkusen, DE;
Abstract
The present invention relates to a composition for preparing flexible foams and the application thereof. The composition comprises the following components: a. an isocyanate mixture comprising: a1) an aliphatic and/or alicyclic isocyanate monomer, and a2) an aliphatic and/or alicyclic; isocyanate trimer, wherein the mass ratio of said monomer to said trimer is in a range of 3:1-200:1; b. a polymer polyol mixture comprising: b1) a first polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of 5-20 wt. %, b2) a second polyether polyol having a number average molecular weight of not less than 3000 g/mol with an ethylene oxide content of more than 60 wt. %, wherein the mass ratio of said first polyether polyol to said second polyether polyol is in a range of 4:1-100:1; c. an isocyanate-reactive group comprising compound having a number average molecular weight of 32-400 g/mol; d. a catalyst; e. a foaming agent; and f. optionally, an additive; wherein said composition has an isocyanate index of 70-120.