Modified adhesive composition which undergoes color changes upon application

• US 4,954,544 A
• Filed: 03/03/1989
• Issued: 09/04/1990
• Est. Priority Date: 03/23/1989
• Status: Expired due to Term

• Current Assignee: Conros Corporation (Newell Brands Inc.)
• Original Assignee: Conros Corporation (Newell Brands Inc.)
• Inventors: Chandaria, Ashok K.
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): DELMENDO, ROMULO H
• Application Number:
  US07/319,112
• Time in Patent Office: 550 Days
• Field of Search: 524/107, 524/111, 524/215, 524/367, 524/548, 524/211, 156/64, 73/150 A, 427/9, 427/10
• US Class Current: 524/111
• CPC Class Codes: C08K 5/1535 Five-membered rings
• CPC Class Codes: C08L 2666/28 Non-macromolecular organic substances
• CPC Class Codes: C08L 39/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C09J 139/06 Homopolymers or copolymers of N-vinyl-pyrrolidones
• CPC Class Codes: C09J 9/005 Glue sticks

Abstract

Adhesive compositions are provided containing additives which improve application characteristics and which undergo a color change upon application to a substrate. The adhesive composition is preferably in stick-form disposed in an applicator such as a reclosable tube dispenser.

Claims

1. An adhesive composition, which upon application to a substrate, undergoes a change from colored to colorless, said composition comprised of:

(a) polyvinylpyrrolidone in an aqueous organic medium with a soap forming gelling agent, p1 (b) a colored indicator additive which upon exposure to air becomes colorless, and which has the formula;

##STR2## wherein each R individually represents hydrogen or lower alkyl, (c) a carbamide, and

(d) a non-ionic surfactant.

2. The adhesive composition of claim 1 wherein said indicator is present in an amount of about 0.01 to 5% by weight based on the total weight of said composition.

3. The adhesive composition of claim 2 wherein said carbamide and non-ionic surfactant are present in an amount of about 0.01 to 10% by weight based on the total weight of said composition.

4. The adhesive composition of claim 1 wherein said indicator additive is 3,3-bis(4-hydroxyphenyl)-l-(3H)-isobenzofuranone.

5. The adhesive composition of claim 1 wherein said indicator additive is 3,3-bis[4-hydroxy-2-methyl-5-(l-methylethyl)phenyl]-1-(3H)-isobenzofuranone.

6. The adhesive composition of claim 1 which is in stick form.

7. The adhesive composition of claim 6 which is contained within a reclosable tube dispenser.

8. The adhesive composition of claim 7 wherein said indicator additive is a 3,3-bis(p-hydroxyphenyl)-l-(3H)-isobenzofuranone

9. The adhesive composition of claim 8 wherein said indicator additive is present in an amount of from about 0.01 to about 2 percent by weight of said composition.

10. The adhesive composition of claim 7 wherein said indicator additive is 3,3-bis[4-hydroxy-2-methyl-5-(l-methylethyl)phenyl]-1-(3H)-isobenzofuranone.

11. The adhesive composition of claim 10 wherein said indicator additive is present in an amount of from about 0.01 to about 2 percent by weight of said composition.