NON-YELLOWING TAPE ARTICLE

• Main Author: GOBRAN, RAMSIS
• Format: Patent
• Language: English; French; German
• Published: 05.08.1998
• Edition: 6
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; USE OF MATERIALS AS ADHESIVES

A non-yellowing pressure-sensitive adhesive tape with a polyolefin film layer and a fibrous web layer. A propylene film layer has an an antioxidant package of: (i) 0.004 to 0.04 weight percent of Irganox TM 1010; (ii) 0.03 to 0.2 weight percent of a solid phosphite antioxidant; (iii) 0.05 to 0.4 weight percent of a thioester; and (iv) 0.05 to 0.4 weight percent of an inorganic acid scavenger; The tackified synthetic rubber pressure-sensitive adhesive layer comprises 100 parts of a polystyrene-polydiene block copolymer, and 20 to 300 parts of a compatible tackifying agent and an antioxidant package, based on 100 parts of the polystyrene-polydiene block copolymer, comprising: (i) 0.1 to 0.6 parts Irganox TM 1010; (ii) 0.1 to 0.6 parts Irganox TM 565; (iii) 0.0 to 0.6 parts of a phosphite antioxidant.