公开(公告)号：US20230167243A1

公开(公告)日：2023-06-01

申请号：US17995867

申请日：2021-04-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Rajdeep S. Kalgutkar ,  David T. Amos ,  Ignatius A. Kadoma ,  Joseph A. Severance ,  Jilliann M. Nelson ,  Annabelle Watts ,  Jonathan J. Anderson ,  Kimberly C.M. Schultz

IPC: C08G73/12 ,  C08G73/10 ,  C09J7/38 ,  C09J7/10 ,  C09J11/08

CPC classification number: C08G73/122 ,  C08G73/1042 ,  C09J7/38 ,  C09J7/10 ,  C09J11/08 ,  C09J2301/414 ,  C09J2301/408 ,  C09J2479/08 ,  C09J2493/00 ,  C09J2477/00

Abstract: Branched amorphous polyamide (co)polymers having a backbone formed by reacting a reaction mixture including at least 25 mol % of a di-amine selected from a secondary di-amine, a branched di-amine, or a combination thereof; and an aliphatic acid blend including a branched aliphatic dimer acid and a branched aliphatic trimer acid. The molar equivalent ratio of the di¬ amine to the aliphatic acid blend is 0.9-1.1. Preferably, the branched amorphous polyamide (co)polymer is not telechelic. The branched amorphous polyamide (co)polymer preferably exhibits one or more of a shear modulus of from 10,000 to 500,000 Pa at 70° C., a complex viscosity of greater than 1,000,000 mPa*s at 70° C., a glass transition temperature of less than 25° C., or a number average molecular weight of greater than 10,000 Da. Biodegradable and/or compostable adhesive articles including the branched amorphous polyamide (co)polymer also are disclosed.

公开(公告)号：US20220243100A1

公开(公告)日：2022-08-04

申请号：US17595545

申请日：2020-05-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ross J. DeVolder ,  Ramasubramani Kuduva Raman Thanumoorthy ,  Jonathan J. Anderson ,  Sierra V. Trainor

IPC: C09J7/38 ,  C09J7/24 ,  B32B27/30 ,  B32B27/18 ,  B32B27/32 ,  B32B27/08

Abstract: Constructions which may be useful as stretch-release tapes comprise: a first pressure sensitive adhesive (PSA) layer; a support layer; and a second pressure sensitive adhesive (PSA) layer; wherein the support layer comprises: 55-95 wt % of an olefinic copolymer of ethylene and alpha-olefin(s) comprising 3-12 carbons; and 5-45 wt % of a first tackifier. Alternately, the support layer comprises: 55-100 wt % of an olefinic copolymer of ethylene and alpha-octene; and 0-45 wt % of a first tackifier. Alternately, the support layer comprises a first tackifier; the first PSA layer comprises a second tackifier; and the second PSA layer comprises a third tackifier; where the first, second, and third tackifiers are the same tackifier. In some embodiments, first and second PSA layers comprise 30-70 wt % of a styrenic copolymer and 30-70 wt % of a tackifier.

公开(公告)号：US20180346774A1

公开(公告)日：2018-12-06

申请号：US15761629

申请日：2016-01-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zhong Chen ,  Yongshang Lu ,  Jingjing Ma ,  Jonathan J. Anderson

IPC: C09J175/06 ,  C09J7/38

CPC classification number: C09J175/06 ,  C08G18/4211 ,  C08G18/6659 ,  C08G18/73 ,  C08G18/765 ,  C08G18/7671 ,  C08G2170/40

Abstract: A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of an aliphatic polyisocyanate component, a polyol component, and a functional acid containing compound. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm3)1/2.