ONE-COMPONENT ADHESIVE COMPOSITIONS
    2.
    发明申请

    公开(公告)号:WO2020131729A1

    公开(公告)日:2020-06-25

    申请号:PCT/US2019/066592

    申请日:2019-12-16

    Applicant: STEPAN COMPANY

    Abstract: One-component (1 K) 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 1 K PEEP compositions offer improved room temperature lap shear strength, better resilience, and higher elongation. The 1 K PEEP systems deliver a desirable balance of physical and mechanical properties while avoiding polyisocyanates and polyamine crosslinkers.

    IMIDE-CONTAINING POLYESTER POLYOLS AND INTUMESCENT RIGID FOAMS

    公开(公告)号:WO2021092100A1

    公开(公告)日:2021-05-14

    申请号:PCT/US2020/059000

    申请日:2020-11-05

    Applicant: STEPAN COMPANY

    Abstract: Rigid polyurethane or polyisocyanurate foams, polyester polyols used to produce them, and methods for formulating the foams are disclosed. The foams comprise a reaction product of a polyisocyanate, a polyester polyol, water, a surfactant, a catalyst and optional ingredients. The polyester polyols comprise a phthalimide-containing polyacid, a phthalimide-containing polyol, or a combination thereof. Rigid foams produced from the polyester polyols exhibit higher thermal stability and/or greater intumescence when compared with foams made from other polyester polyols. The phthalimide-containing polyester polyols should allow formulators to improve the flammability performance of rigid foams with reduced levels of flame retardants and/or lower index and should facilitate the production of thinner insulation panels.

    LOW-VOC POLYURETHANE ADHESIVE
    5.
    发明申请

    公开(公告)号:WO2018191150A1

    公开(公告)日:2018-10-18

    申请号:PCT/US2018/026680

    申请日:2018-04-09

    Applicant: STEPAN COMPANY

    Abstract: A low-VOC, two-component polyurethane adhesive is provided. The polyurethane adhesive has an A-side that includes an isocyanate and a non-reactive plasticizer, and a B side that includes an aliphatic polyester polyol, a non-polyester polyol, and a urethane catalyst. The A-side and the B-side are reacted at a volume ratio of 1:1 and formulated at an NCO/OH index within the range of 0.90 to 1.10. The polyurethane adhesive is solvent-free and is particularly suitable for adhering a polymeric membrane to a substrate.

    PREPOLYMER CONTAINING A LIQUID HARDNESS AGENT FOR OPEN CELL FOAMS
    8.
    发明申请
    PREPOLYMER CONTAINING A LIQUID HARDNESS AGENT FOR OPEN CELL FOAMS 审中-公开
    含有液体硬化剂的预聚物用于开放细胞膜

    公开(公告)号:WO2007047661A2

    公开(公告)日:2007-04-26

    申请号:PCT/US2006/040528

    申请日:2006-10-17

    Abstract: The present technology provides at least one prepolymer comprising a polyisocyanate and a ring-containing isocyanate reactive component as a load-bearing capacity improvement agent in flexible polyurethane foam manufacture. The ring-containing component eliminates and/or reduces the need for a copolymer polyol containing suspended solids in the manufacture of flexible foam products. This can reduce production costs, reactivity variations, filter plugging, color variations, foam shrinkage/tightness, foam irregularity, and foam malodor while maintaining an adequate load-bearing capacity.

    Abstract translation: 本技术提供至少一种包含多异氰酸酯和含环的异氰酸酯反应性组分的预聚物作为柔性聚氨酯泡沫制造中的承载能力改进剂。 在制造柔性泡沫产品时,含环组分消除和/或减少了含有悬浮固体的共聚物多元醇的需要。 这可以在保持足够的承载能力的同时降低生产成本,反应性变化,过滤器堵塞,颜色变化,泡沫收缩/紧密度,泡沫不规则性和泡沫恶臭。

Patent Agency Ranking