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公开(公告)号：US11066550B2
公开(公告)日：2021-07-20
申请号：US16571970
申请日：2019-09-16
申请人： STEPAN COMPANY
摘要： Polyether-epoxide polymer compositions are disclosed. The compositions comprise a reaction product of a polyepoxide compound and a polyol composition comprising a polyether polyol. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.5:1 to 3:1. The polyether-epoxide composition has a Tg within the range of −40° C. to 60° C. The polyether polyol has a hydroxyl value within the range of 150 to 800 mg KOH/g and an average hydroxyl functionality within the range of 3.5 to 8.0. In some aspects, the polyol composition further comprises a polyester polyol. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the polyether-epoxide compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on polyamines or polyisocyanates.
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公开(公告)号：US11059933B2
公开(公告)日：2021-07-13
申请号：US16556396
申请日：2019-08-30
申请人： STEPAN COMPANY
摘要： Isocyanate-modified polyester-epoxide polymer (i-PEEP) compositions are disclosed. The i-PEEP compositions comprise a reaction product of a polyepoxide compound, a polyisocyanate, and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.2 to 2. The i-PEEP index as defined herein is within the range of 100 to 200. The i-PEEP composition has a Tg within the range of −30° C. to 35° C. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the i-PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on the polyamines typically used to cure epoxy systems.
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公开(公告)号：US11970571B2
公开(公告)日：2024-04-30
申请号：US17510637
申请日：2021-10-26
申请人： STEPAN COMPANY
IPC分类号： C08G59/06 , C08G59/24 , C08G59/42 , C08G59/62 , C08G59/68 , C08G59/72 , C08G65/331 , C08L67/02 , C08L71/08 , G10K11/162
CPC分类号： C08G59/063 , C08G59/245 , C08G59/686 , C08G59/72 , C08L67/02 , C08L71/08 , C08G2170/00 , C08G2350/00
摘要： Noise, vibration, or harshness (NVH) properties of an industrial or consumer product are reduced by incorporating therein an effective amount of a polyether- or polyester-epoxide polymer (PEEP) composition. The PEEP compositions are one-component or two-component reaction products of a polyepoxide compound and a polyol composition. The PEEP compositions have a glass-transition temperature within the range of −50° C. to 50° C. and a loss factor of at least 0.5 by ASTM D5992 over a temperature range of at least 15 Celsius degrees at one or more frequencies within the range of 0.1 to 10,000 Hz. The PEEP compositions provide NVH damping over a broad temperature range, have improved flexibility compared with conventional epoxy technologies, avoid amine and isocyanate reactants, and can be tailored to meet target specifications.
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公开(公告)号：US11667821B2
公开(公告)日：2023-06-06
申请号：US17348199
申请日：2021-06-15
申请人： STEPAN COMPANY
IPC分类号： C09J163/04 , C08G59/42 , C08G59/62 , C09J163/00
CPC分类号： C09J163/04
摘要： One-component (1K) adhesive compositions (“PEEP” compositions) and a process for making them are disclosed. A polyepoxide is reacted with a polyether polyol composition, a polyester polyol composition, or both in the presence of a heat-activated Lewis acid catalyst at a temperature within the range of 100° C. to 220° C. for a time effective to cure the adhesive. The compositions are storage-stable under ambient conditions. Compared with conventional epoxy compositions, the 1K PEEP compositions offer improved room temperature lap shear strength, better resilience, and higher elongation. The 1K PEEP systems deliver a desirable balance of physical and mechanical properties while avoiding polyisocyanates and polyamine crosslinkers.
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公开(公告)号：US10882946B2
公开(公告)日：2021-01-05
申请号：US16327086
申请日：2017-08-08
申请人： STEPAN COMPANY
摘要： 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.
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