公开(公告)号：US10882946B2

公开(公告)日：2021-01-05

申请号：US16327086

申请日：2017-08-08

Applicant: STEPAN COMPANY

Inventor： Warren A. Kaplan ,  Jennifer S. Westfall

IPC: C08G59/42 ,  C09J167/02 ,  C08G63/91 ,  C08G59/62 ,  C08G59/06 ,  C08G59/72 ,  C08G63/20

Abstract: Polyester-epoxide polymer (PEEP) compositions are disclosed. The PEEP compositions comprise a reaction product of a polyepoxide compound (eq. wt. 125 to 250 g/eq.) and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.8 to 3.5. The PEEP composition has a Tg within the range of −40° C. to 60° C. Elevated temperature-cure and low temperature-cure processes for making the PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for adhesives, coatings, elastomers, and other valuable products is assembled from readily available starting materials without reliance on polyisocyanates or polyamines. The PEEP compositions have increased elongation and lower Tg when compared with traditional epoxy products.

公开(公告)号：US20190071533A1

公开(公告)日：2019-03-07

申请号：US16179690

申请日：2018-11-02

Applicant: Stepan Company

Inventor： Sarah Wolek ,  Warren A. Kaplan ,  Laura Schreiner ,  Chunhua Yao ,  David J. Norberg

IPC: C08G18/42 ,  C08L75/04 ,  C08G18/54 ,  C08G18/16 ,  C08G18/18 ,  C08G63/46 ,  C08G63/183 ,  C08G63/181 ,  C08G18/76 ,  C08G18/72 ,  C08G18/09 ,  C08G18/48 ,  C08G18/40 ,  C08G18/22 ,  C08G101/00

Abstract: An aromatic polyester polyol having a nominal functionality of at least about 2 is produced from the esterification reaction of a phthalate-based composition containing less than 50 mol % of ortho-phthalic acid or phthalic anhydride, with a hydroxyl material containing at least 20 mol % of at least one branched aliphatic diol, and optionally transesterified with at least one hydrophobic material. The polyester polyol has improved shelf-life stability as demonstrated by the polyester polyol remaining clear and homogeneous for at least 6 months when stored at room temperature. The polyester polyol, when incorporated into a polyol foam-forming resin composition in an amount of at least 40 wt %, results in polyurethane and polyisocyanurate foams that exhibit low smoke and weight loss upon burning conditions.