Pressure sensitive adhesive composition and products
AssigneeMinnesota Mining and Manufacturing Company
InventorRichard J. Pokorny
Life of this patent
Estimating the term…
Abstract
A pressure sensitive adhesive composition is provided having about 100 parts by weight of a crosslinkable elastomer, from 20-100 parts by weight of a tackifying resin, at least 0.1 part by weight of a higher aliphatic mercaptan, up to 30 parts by weight of a heat curable phenolic resin, and up to about 10 parts by weight of a catalyst for the phenolic resin.
Claims27
A pressure sensitive adhesive composition comprising:
- (a) about 100 parts by weight of a crosslinkable polymerized elastomer;
- (b) at least about 20 parts by weight of a tackifying resin;
- (c) at least about 0.1 part by weight of a higher alkyl mercaptan;
- (d) optionally up to about 30 parts by weight of a heat curable phenolic resin;
- and
- (e) optionally up to about 10 parts by weight of a catalyst for said phenolic resin,
- wherein after a tape comprising a film of said pressure sensitive adhesive composition is adhered to a substrate and removed, there is little or no adhesive transfer to the substrate.
A pressure sensitive adhesive tape comprising a film of a pressure sensitive adhesive composition which comprises:
- (a) about 100 parts by weight of a crosslinkable polymerized elastomer;
- (b) at least about 20 parts by weight of a tackifying resin;
- (c) at least about 0.1 part by weight of a higher alkyl mercaptan;
- (d) optionally up to about 30 parts by weight of a heat curable phenolic resin;
- and
- (e) optionally up to about 10 parts by weight of a catalyst for said phenolic resin,
- wherein after said tape is adhered to a substrate and removed, there is little or no adhesive transfer to the substrate.
A substrate having an adhesive tape thereon, wherein the adhesive tape comprises a film of a pressure sensitive adhesive composition wherein the pressure sensitive adhesive comprises:
- (a) about 100 parts by weight of a crosslinkable polymerized aldehyde-reactive elastomer;
- (b) at least about 20 parts by weight of a tackifying resin;
- (c) at least about 0.1 part by weight of a higher alkyl mercaptan;
- (d) optionally up to about 30 parts by weight of a heat curable phenolic resin;
- and
- (e) optionally up to about 10 parts by weight of a catalyst for said phenolic resin,
- wherein after said adhesive tape is removed from said substrate, there is little or no adhesive transfer to the substrate.
A die-cut masking assembly comprising:
- (a) at least one sheet of a paint masking material of a predetermined design or configuration having at least a portion of at least one surface on which a pressure sensitive adhesive composition is adhered;
- wherein the pressure sensitive adhesive composition comprises:
- (a) about 100 parts by weight of a crosslinkable polymerized elastomer;
- (b) at least about 20 parts by weight of a tackifying resin;
- (c) at least about 0.1 part by weight of a higher alkyl mercaptan;
- (d) optionally up to about 30 parts by weight of a heat curable phenolic resin;
- and
- (e) optionally up to about 10 parts by weight of a catalyst for said phenolic resin,
- wherein after said sheet of paint masking material is adhered to a substrate and removed, there is little or no adhesive transfer to the substrate,
- (b) a release liner to which the pressure sensitive adhesive composition is releasably adhered.
Dependencies are inferred from the claim text.