公开(公告)号：US20170121568A1

公开(公告)日：2017-05-04

申请号：US15317703

申请日：2015-06-11

Applicant: TESA SE

Inventor： Maike STREBL ,  Patrick KEREP ,  Tobias BLÖMKER ,  Kerstin KLINGEBERG

IPC: C09J7/02 ,  C09J175/06

CPC classification number: C09J7/22 ,  C08G18/12 ,  C08G18/3203 ,  C08G18/4238 ,  C08G18/425 ,  C08G18/664 ,  C08G18/755 ,  C08G2170/40 ,  C09J7/255 ,  C09J7/38 ,  C09J175/06 ,  C09J2201/122 ,  C09J2467/006 ,  C09J2475/00 ,  C08G18/792

Abstract: The invention relates to an extensively biologically degradable adhesive tape, which in particular has a good and quickly established anchoring between the adhesive and the carrier. The invention relates to an adhesive tape for protecting surfaces, comprising an adhesive H, containing at least 60 wt %, at least one polyurethane P, obtainable from chemical cross-linking of a polyurethane pre-polymer, obtainable from the chemical reaction of d) one or a plurality of aliphatic polyester polyols A having a hydroxy functionality of 1.8 through 2 and a number-averaged molecular weight of equal to/greater than 1,000 g/mole; e) one or a plurality of compounds B having a hydroxy functionality of 1.8 through 2 and a number-averaged molecular weight of less than 1,000 g/mol; f) one or a plurality of aliphatic diisocyanates C; wherein the ratio of the total number of isocyanate groups to the total number of hydroxy groups of the substances involved in the chemical reaction for building the prepolymer is greater than/equal to 0.4 and less than 1; and a biodegradable carrier.

公开(公告)号：US20170362478A1

公开(公告)日：2017-12-21

申请号：US15623916

申请日：2017-06-15

Applicant: TESA SE

Inventor： Tobias BLÖMKER ,  Maike STREBL

IPC: C09J175/04 ,  C08G18/32 ,  C09J7/04 ,  C09J7/02 ,  C08G18/10 ,  C08G18/83 ,  C08G18/73 ,  C08G18/66 ,  C09J5/00 ,  C08G18/22 ,  C08G18/42 ,  C08K5/42

CPC classification number: C09J175/04 ,  C08G18/10 ,  C08G18/12 ,  C08G18/227 ,  C08G18/3206 ,  C08G18/3221 ,  C08G18/4238 ,  C08G18/4277 ,  C08G18/664 ,  C08G18/73 ,  C08G18/792 ,  C08G18/833 ,  C08G2170/40 ,  C08K5/10 ,  C08K5/42 ,  C09J5/00 ,  C09J7/21 ,  C09J7/22 ,  C09J7/255 ,  C09J7/38 ,  C09J175/06 ,  C09J2205/102 ,  C09J2400/263 ,  C09J2400/283 ,  C09J2401/006 ,  C09J2403/006 ,  C09J2467/006 ,  C09J2475/00 ,  C08K5/109

Abstract: A biodegradable pressure-sensitive adhesive which can be readily coated indirectly onto biodegradable carriers, which comprisesat least 60 wt % of at least one polyurethane, and at least one sulfonated carboxylic ester; and a method for producing a biodegradable adhesive tape, which comprises providing a pressure-sensitive adhesive of the invention as a dispersion in at least one organic solvent; coating this dispersion onto a release liner; removing the organic solvent; and transferring the pressure-sensitive adhesive onto a biodegradable carrier.

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

Inventor： Tobias BLÖMKER ,  Uwe SCHÜMANN ,  Manfred SPIES ,  Maike STREBL

IPC: C09J175/06 ,  C08G18/12 ,  C08G18/73 ,  C08G18/42 ,  C08G18/32 ,  C09J7/02 ,  C08G18/75

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.