A facile post-modification strategy for carboxylic acid-functionalized UV-responsive pressure-sensitive adhesives

2022 ◽  
Author(s):  
Chiwon Hwang ◽  
Jong-Ho Back ◽  
Dowon Ahn ◽  
Hyun-Jong Paik ◽  
Wonjoo Lee ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Ring Opening ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Ring Opening Reactions ◽  
Post Modification

UV-responsive pressure-sensitive adhesives (PSAs) were achieved through the ring-opening reactions of N-carbonyl aziridine radicals.

Zwitterion Structure and Acylative Ring-Opening Reactions of 2-Amino-thiazoline-4-carboxylic Acid

1962 ◽  
Vol 27 (9) ◽  
pp. 3117-3123 ◽  
Author(s):  
Oscar Gawron ◽  
Joseph Fernando ◽  
John Keil ◽  
T. J. Weismann
Keyword(s):  
Carboxylic Acid ◽  
Ring Opening ◽  
Ring Opening Reactions

Iridium-catalyzed asymmetric ring-opening reactions of azabenzonorbornadiene with carboxylic acid nucleophiles

2013 ◽  
Vol 18 (1) ◽  
pp. 101-110 ◽  
Author(s):  
Yuhua Long ◽  
Wenling Wang ◽  
Dingqiao Yang ◽  
Han Jiang ◽  
Kaixuan Chen ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Ring Opening ◽  
Ring Opening Reactions ◽  
Asymmetric Ring Opening

Acid-Catalyzed Intramolecular Ring-Opening Reactions of Cyclopropanated Oxabenzonorbornadienes with Carboxylic Acid Nucleophiles

Synthesis ◽  
2021 ◽  
Author(s):  
Angel Ho ◽  
Austin Pounder ◽  
Samuel Koh ◽  
Matthew Macleod ◽  
Emily Carlson ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Ring Opening ◽  
Reaction Conditions ◽  
Ring Opening Reactions ◽  
Acidic Conditions ◽  
Acid Catalyzed ◽  
Type 3 ◽  
Intramolecular Ring

The present work demonstrates the ability of carboxylic acid-tethered cyclopropanated oxabenzonorbornadienes (CPOBDs) to undergo ring-opening reactions in mild acidic conditions. The optimized reaction conditions involve the use of pTsOH in DCE at 90 °C. Two regioisomers are formed but the reactions are highly regioselective towards type 3 ring-opened products. It was observed that substitution at the C-5 and aryl positions of CPOBD significantly hinders the ring opening reactions leading to decreased yields of ring-opened product, although high regioselectivity for the Type 3 ring-opened product is still maintained. Herein, we report the first examples of acid-catalyzed intramolecular ring-opening reactions of CPOBD with carboxylic acid nucleophiles.

Type 2 Ring-Opening Reactions of Cyclopropanated 7-Oxabenzonorbornadienes with Carboxylic Acid Nucleophiles

Synthesis ◽  
2016 ◽  
Vol 48 (23) ◽  
pp. 4253-4259 ◽  
Author(s):  
William Tam ◽  
Emily Carlson ◽  
Daniel Hong
Keyword(s):  
Carboxylic Acid ◽  
Ring Opening ◽  
Ring Opening Reactions

Passivation of pressure sensitive adhesive stickies by addition of acrylic fibers to OCC pulp before papermaking

TAPPI Journal ◽  
2016 ◽  
Vol 15 (10) ◽  
pp. 631-639
Author(s):  
MOHAMMAD HADI ARYAIE MONFARED ◽  
HOSSEIN RESALATI ◽  
ALI GHASEMIAN ◽  
MARTIN A. HUBBE
Keyword(s):  
Adverse Effects ◽  
Control Sample ◽  
Pressure Sensitive Adhesive ◽  
Acrylic Fiber ◽  
Burst Strength ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Tear Index ◽  
Breaking Length ◽  
Acrylic Fibers

This study investigated the addition of acrylic fiber to old corrugated container (OCC) pulp as a possible means of overcoming adverse effects of water-based pressure sensitive adhesives during manufacture of paper or paperboard. Such adhesives can constitute a main source of stickies, which hurt the efficiency of the papermaking process and make tacky spots in the product. The highest amount of acrylic fiber added to recycled pulps generally resulted in a 77% reduction in accepted pulp microstickies. The addition of acrylic fibers also increased pulp freeness, tear index, burst strength, and breaking length, though there was a reduction in screen yield. Hence, in addition to controlling the adverse effects of stickies, the addition of acrylic fibers resulted in the improvement of the mechanical properties of paper compared with a control sample.

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