Pressure sensitive adhesive tape and silicone-free release coating used therein
AssigneeAdhesives Research, Inc.
InventorsRanjit Malik, Julie Clonan
Life of this patent
Estimating the term…
Abstract
A pressure sensitive adhesive tape is provided having a silicone-free release layer, said tape comprising (1) at least one backing layer; (2) at least one pressure sensitive adhesive layer, and (3) at least one silicone-free release layer, said release layer comprising a crosslinked poly(alkylene oxide), said poly(alkylene oxide) being defined by the formula X1—(O—R)n—OX2 where X1 and X2 are terminal groups at least one of which permits crosslinking of said poly(alkylene oxide), n ranges from 1 to 200,000, R is a straight or branched alkylene group having the formula (CR1R2)m where m is an integer from 1 to 10 and R1 and R2 may independently be hydrogen and C1-3 alkyl.
Claims16
A release film comprising:
- (1) a backing layer;
- and
- (2) at least one silicone-free release layer, said release layer comprising a crosslinked poly(alkylene oxide), said poly(alkylene oxide) being defined by the formula X1—(O—R)n—OX2 where n ranges from 1 to 200,000, R is a straight or branched alkylene group defined by the formula (CR1CR2)m where m is an integer from 1 to 10 and R1 and R2 may independently be hydrogen and C1-3 alkyl, and X1 and X2 are terminal groups both of which permit crosslinking of said poly(alkylene oxide) between said X1 and X2 groups and/or with a crosslinking compound.
An adhesive tape comprising:
- (1) at least one backing layer;
- (2) at least one pressure sensitive adhesive layer on said backing layer;
- and
- (3) at least one silicone-free release layer, said release layer comprising a crosslinked poly(alkylene oxide), said poly(alkylene oxide) being defined by the formula X1—(O—R)n—OX2 where n ranges from 1 to 200,000, R is a straight or branched alkylene group defined by the formula (CR1CR2)m where m is an integer from 1 to 10 and R1 and R2 may independently be hydrogen and C1-3 alkyl, and X1 and X2 are terminal groups both of which permit crosslinking of said poly(alkylene oxide) between said X1 and X2 groups and/or with a crosslinking compound.
Dependencies are inferred from the claim text.