Biodegradable, Pressure-sensitive Adhesive Based on Polyester-Polyurethane
    1.
    发明申请
    Biodegradable, Pressure-sensitive Adhesive Based on Polyester-Polyurethane 审中-公开
    基于聚酯聚氨酯的可生物降解的压敏粘合剂

    公开(公告)号:US20170002238A1

    公开(公告)日:2017-01-05

    申请号:US15100042

    申请日:2014-12-15

    Applicant: TESA SE

    Abstract: Tacky, biodegradable, chemical reaction product formed from • at least one or more aliphatic polyester-polyols having a hydroxyl functionality of between greater than two and less than four each • at least one or more aliphatic polyester-polyols having a hydroxyl functionality of between less than or equal to two and greater than one each • at least one or more each doubly hydroxyl-functionalized chain extenders having a molecular weight of less than or equal to 200 g/mol each, and • at least one or more aliphatic diisocyanates, characterized in that the ratio of the total number of isocyanate groups to the total number of hydroxyl groups in the compounds introduced for the chemical reaction to form the tacky, biodegradable, chemical reaction product is between greater than or equal to 0.4 and less than 1.0, preferably between greater than or equal to 0.6 and less than or equal to 0.9.

    Abstract translation: 由至少一种或多种具有大于2和小于4的羟基官能团的脂族聚酯多元醇形成的粘性,可生物降解的化学反应产物; - 至少一种或多种羟基官能团之间的脂族聚酯多元醇 至少一种或多种每个具有小于或等于200g / mol的分子量的双羟基官能化的增链剂,和至少一种或多种脂族二异氰酸酯,其特征在于: 因为引入用于化学反应以形成粘性,可生物降解的化学反应产物的化合物中的异氰酸酯基总数与总羟基数之比大于或等于0.4且小于1.0,优选 大于或等于0.6且小于或等于0.9。

    USE OF THERMALLY STABLE TERPENE-PHENOL RESINS

    公开(公告)号:US20220098450A1

    公开(公告)日:2022-03-31

    申请号:US17421848

    申请日:2020-01-06

    Applicant: TESA SE

    Abstract: If at least one terpene-phenol resin is used as tackifying resin for pressure-sensitive adhesives based on polar framework polymers, wherein the at least one terpene-phenol resin in gel permeation chromatography analysis shows a multimodal molar mass distribution wherein the low molecular weight peak has its maximum within a range above 260 g/mol, it is possible, even at elevated temperatures, to achieve elevated storage stability of the terpene-phenol resins, apparent from a distinct reduction in increases in softening points over time.

    POLYESTER POLYURETHANE
    4.
    发明申请

    公开(公告)号:US20170121579A1

    公开(公告)日:2017-05-04

    申请号:US15317599

    申请日:2015-06-11

    Applicant: tesa SE

    Abstract: A biodegradable pressure-sensitive adhesive is provided, having good shear strength at relatively high temperatures. This is achieved by chemical crosslinking of a polyurethane prepolymer obtainable by chemical reaction of a) one or more aliphatic polyester polyols A having a hydroxyl functionality of 1.8 up to and including 2 and a number-average molecular weight of greater than/equal to 1000 g/mol; b) one or more compounds B having a hydroxyl functionality of 1.8 up to and including 2 and a molecular weight of less than 1000 g/mol; and c) one or more aliphatic diisocyanates C, where the ratio of the total number of isocyanate groups to the total number of hydroxyl groups in the substances involved in the chemical reaction is greater than/equal to 0.4 and less than 1; and by the formulation of a pressure-sensitive adhesive having one or more polyurethane(s) of this kind as the main constituent.

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