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Patent Agency Ranking
1.发明申请MULTI-ARM HYDROPHILIC URETHANE POLYMERS, METHODS OF MAKING THEM, AND COMPOSITIONS AND PROCESSES EMPLOYING THEM 有权多臂水解尿素聚合物，其制备方法，以及使用它们的组合物和方法公开(公告)号：US20140038874A1
公开(公告)日：2014-02-06
申请号：US14045843
申请日：2013-10-04
Applicant: Stepan Company
IPC: C11D7/32
CPC classification number: C11D7/3263 , C08G18/3206 , C08G18/4833 , C08G18/758 , C08G81/00 , C11D3/3726
Abstract: Hydrophilic, multi-arm urethane polymers are described that are dispersible and/or soluble in water, and provide wetting, foaming and cleaning benefits for aqueous cleaning products, including hard surface cleaners, machine dishwash, and liquid hand dishwash compositions.
Abstract translation: 描述了可分散和/或可溶于水的亲水性多臂聚氨酯聚合物，并为水性清洁产品（包括硬表面清洁剂，机洗碗碟）和液体洗手液组合物提供润湿，发泡和清洁益处。
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公开(公告)号：US20240141225A1
公开(公告)日：2024-05-02
申请号：US18396909
申请日：2023-12-27
Applicant: Stepan Company
Inventor： Douglas Kip Hillshafer , Sarah Wolek
CPC classification number: C09K8/725 , C09K8/68 , C09K8/885 , C09K2208/18
Abstract: A hydraulic fracturing method for recovering oil from a low-temperature subterranean oil formation is disclosed. Before, during, or after inducing hydraulic fracturing within the formation, a particulate, degradable polyester diverting agent is introduced into the formation in an amount effective to improve oil production from the formation. The diverting agent is allowed to degrade, and oil is recovered. The diverting agent has a melting point greater than the average temperature of the formation and is selected from: (i) ethylene glycol succinates; (ii) acid-terminated ethylene glycol succinates; (iii) acid-terminated polyglycolic acids; (iv) acid-terminated polylactic acids; and (v) mixtures of any of (i) through (iv) with a half acid ester.
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公开(公告)号：US12291673B2
公开(公告)日：2025-05-06
申请号：US18396909
申请日：2023-12-27
Applicant: Stepan Company
Inventor： Douglas Kip Hillshafer , Sarah Wolek
Abstract: A hydraulic fracturing method for recovering oil from a low-temperature subterranean oil formation is disclosed. Before, during, or after inducing hydraulic fracturing within the formation, a particulate, degradable polyester diverting agent is introduced into the formation in an amount effective to improve oil production from the formation. The diverting agent is allowed to degrade, and oil is recovered. The diverting agent has a melting point greater than the average temperature of the formation and is selected from: (i) ethylene glycol succinates; (ii) acid-terminated ethylene glycol succinates; (iii) acid-terminated polyglycolic acids; (iv) acid-terminated polylactic acids; and (v) mixtures of any of (i) through (iv) with a half acid ester.
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公开(公告)号：US11898096B2
公开(公告)日：2024-02-13
申请号：US17617729
申请日：2020-06-15
Applicant: STEPAN COMPANY
Inventor： Douglas Kip Hillshafer , Sarah Wolek
CPC classification number: C09K8/725 , C09K8/68 , C09K8/885 , C09K2208/18
Abstract: A hydraulic fracturing method for recovering oil from a low-temperature subterranean oil formation is disclosed. Before, during, or after inducing hydraulic fracturing within the formation, a particulate, degradable polyester diverting agent is introduced into the formation in an amount effective to improve oil production from the formation. The diverting agent is allowed to degrade, and oil is recovered. The diverting agent has a melting point greater than the average temperature of the formation and is selected from: (i) ethylene glycol succinates; (ii) acid-terminated ethylene glycol succinates; (iii) acid-terminated polyglycolic acids; (iv) acid-terminated polylactic acids; (v) mixtures of any of (i) through (iv) with a half acid ester; and (vi) mixtures of polylactic acids or polyglycolic acids with a half acid ester. These easily synthesized classes of particulate polyester diverting agents degrade more effectively than polylactides under the conditions present in low-temperature wells and should help to enhance well productivity.
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5.发明授权Multi-arm hydrophilic urethane polymers, methods of making them, and compositions and processes employing them 有权多臂亲水性聚氨酯聚合物，其制备方法，以及使用它们的组合物和方法公开(公告)号：US09284518B2
公开(公告)日：2016-03-15
申请号：US14045843
申请日：2013-10-04
Applicant: Stepan Company
IPC: C08L53/00 , C08L75/00 , C08L75/04 , C11D7/32 , C08G81/00 , C08G18/48 , C08G18/75 , C08G18/32 , C11D3/37
CPC classification number: C11D7/3263 , C08G18/3206 , C08G18/4833 , C08G18/758 , C08G81/00 , C11D3/3726
Abstract: Hydrophilic, multi-arm urethane polymers are described that are dispersible and/or soluble in water, and provide wetting, foaming and cleaning benefits for aqueous cleaning products, including hard surface cleaners, machine dishwash, and liquid hand dishwash compositions.
Abstract translation: 描述了可分散和/或可溶于水的亲水性多臂聚氨酯聚合物，并为水性清洁产品（包括硬表面清洁剂，机洗碗碟）和液体洗手液组合物提供润湿，发泡和清洁益处。
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