Tackifier for butadiene rubber

Abstract

An adhesive comprising polybutadiene rubber and a first C9 hydrocarbon tackifier having an aliphatic:aromatic ratio or aliphatic:(unsaturated and aromatic) ratio of 0.1 to 34 as measured by test method 1, and an Mw of less than 3000 Daltons as measured by test method 2, wherein the adhesive comprises 100 parts by weight of polybutadiene rubber and 50 to 150 phr of the first C9 hydrocarbon tackifier. A method for manufacturing such an adhesive, and an article comprising such an adhesive.

Claims

1. It is an adhesive, Polybutadiene rubber and A first C9 hydrocarbon tackifier having an aliphatic:aromatic ratio or aliphatic:(unsaturated and aromatic) ratio measured by test method 1 of 0.1 to 34, and a Mw measured by test method 2 of less than 3000 Daltons, Includes, The adhesive comprises 100 parts by weight of the polybutadiene rubber and 50 to 150 phr of the first C9 hydrocarbon tackifier.

2. The adhesive according to claim 1, wherein the aliphatic:aromatic ratio or the aliphatic:(unsaturated and aromatic) ratio is 0.5 to 20, optionally 1 to 20, optionally 1.5 to 20, optionally 2.5 to 18, or optionally 10 to 15.

3. The adhesive according to claim 1 or 2, wherein the first C9 hydrocarbon-based tackifier has a softening point of 90°C to 150°C, optionally 100°C to 150°C, optionally 115°C to 150°C, optionally 125°C to 150°C, optionally 130°C to 150°C, optionally 135°C to 150°C, optionally 140°C to 150°C, or optionally 145°C to 150°C.

4. Furthermore, 148 phr or less, in some cases 145 phr or less, in some cases 140 phr or less, in some cases 130 phr or less, in some cases 120 phr or less, in some cases 110 phr or less, in some cases 100 phr or less, in some cases 80 phr or less, in some cases 60 phr or less, in some cases 50 phr or less, in some cases 40 phr or less, in some cases 30 phr or less, in some cases 20 phr or less, in some cases 15 phr or less, in some cases 10 phr or less, in some cases 5 phr The adhesive according to any one of claims 1 to 3, comprising a second tackifier in an amount of hr or less, optionally 4 phr or less, optionally 3 phr or less, optionally 2 phr or less, optionally 1 phr or less, or optionally 0.5 phr or less, wherein the second tackifier is different from the first C9 hydrocarbon-based tackifier, and the sum of the second tackifier and the first C9 hydrocarbon-based tackifier is 50 to 150 phr based on 100 parts of the polybutadiene rubber.

5. Furthermore, the adhesive according to claim 4, comprising two or more tackifiers, wherein the additional tackifiers are different from the first C9 hydrocarbon-based tackifier and the second tackifier.

6. The adhesive according to any one of claims 1 to 5, further comprising an additive selected from the group consisting of antioxidants, pigments, oils, liquid tackifiers, and combinations thereof.

7. The adhesive according to any one of claims 1 to 6, wherein the adhesive constitutes a pressure-sensitive adhesive.

8. The adhesive according to any one of claims 1 to 7, wherein the polybutadiene rubber comprises 0 to 9% by weight of 1,2-butadiene, 0 to 40% by weight of trans-1,4-butadiene, and 60 to 100% by weight of cis-1,4-butadiene.

9. An article comprising the adhesive described in any one of claims 1 to 8.

10. The article according to claim 9, wherein the article is a pavement marking tape.

Images