Resin composition for tackifier or adhesive and preparation method thereof

Patent metadata

Field	Value
Publication number	US-12415941-B2
Application number	US-202017765393-A
Country	US
Kind code	B2
Filing date	Mar 19, 2020
Priority date	Oct 2, 2019
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

Provided are a resin composition for a tackifier or an adhesive and a preparation method thereof. Provided is a resin composition for a tackifier or an adhesive, which includes a hydrogenated petroleum resin with a controlled hydrogenation rate to have excellent compatibility with polyolefin and to exhibit high transparency while having improved quality including adhesive property.

First claim

What is claimed is:

1. A resin composition for a tackifier or an adhesive, the resin composition comprising:
a hydrogenated petroleum resin obtained by performing thermal polymerization and hydrogenation of a monomer composition including dicyclopentadiene and C9 monomer; and
a metallocene polyolefin,
wherein the metallocene polyolefin is a polyethylene (PE)-based polyolefin,
wherein the hydrogenated petroleum resin includes the C9 monomer in an amount of 5 to 40 wt %, based on the total weight of the dicyclopentadiene and the C9 monomer, and the metallocene polyolefin is a metallocene polyethylene (PE)-based polyolefin,
wherein the hydrogenated petroleum resin has a hydrogenation rate of 90% to 100%, as measured by the following Equation 1:
Hydrogenation rate (%)=Number of moles of saturated aliphatic single bonds from aromatic double bonds in hydrogenated petroleum resin after hydrogenation/Number of moles of total aromatic double bonds in petroleum resin before hydrogenation*100.  [Equation 1]

2. The resin composition for a tackifier or an adhesive of claim 1 , wherein the C9 monomer includes styrene, alpha methyl styrene, vinyl toluene, indene, or alkylated derivatives thereof.

3. The resin composition for a tackifier or an adhesive of claim 1 , wherein the hydrogenated petroleum resin and the metallocene polyolefin are included at a weight ratio of 60:40 to 40:60.

4. A method of preparing a resin composition for a tackifier or an adhesive, the method comprising the steps of:
preparing a polymerized petroleum resin by performing thermal polymerization of a monomer composition including dicyclopentadiene and C9 monomer;
preparing a hydrogenated petroleum resin having a hydrogenation rate of 90% to 100%, as measured by the following Equation 1, by performing hydrogenation of the polymerized petroleum resin; and
mixing the hydrogenated petroleum resin and a metallocene polyolefin,
wherein the metallocene polyolefin is a polyethylene (PE)-based polyolefin,
wherein the hydrogenated petroleum resin includes the C9 monomer in an amount of 5 to 40 wt %, based on the total weight of the dicyclopentadiene and the C9 monomer, and the metallocene polyolefin is a metallocene polyethylene (PE)-based polyolefin:
Hydrogenation rate (%)=Number of moles of saturated aliphatic single bonds from aromatic double bonds in hydrogenated petroleum resin after hydrogenation/Number of moles of total aromatic double bonds in petroleum resin before hydrogenation*100.  [Equation 1]

5. The method of preparing a resin composition for a tackifier or an adhesive of claim 4 , wherein the C9 monomer includes styrene, alpha methyl styrene, vinyl toluene, indene, or alkylated derivatives thereof.

6. The method of preparing a resin composition for a tackifier or an adhesive of claim 4 , wherein the step of performing thermal polymerization includes a first polymerization stage of performing a polymerization process of the monomer composition under stirring; and a second polymerization stage of performing a polymerization process of the reaction product of the first stage polymerization without stirring.

7. The method of preparing a resin composition for a tackifier or an adhesive of claim 6 , wherein the first polymerization stage is performed in a continuous stirred tank reactor (CSTR), and
the second polymerization stage is performed in a plug flow reactor (PFR).

8. A hot melt tackifier or adhesive comprising the resin composition for a tackifier or an adhesive of claim 1 .

Assignees

• Hanwha Solutions Corp

Inventors

• Kang Hyeon Uk
• Byun Do Hyun
• Zhang Ying
• Seong Pilje

Classifications

• C08F212/08

  Styrene · CPC title

• C09J125/08 Primary

  Copolymers of styrene (C09J129/08, C09J135/06, C09J155/02 take precedence) · CPC title

• C08L23/04

  Homopolymers or copolymers of ethene · CPC title

• C09J2425/00

  Presence of styrenic polymer · CPC title

• C09J2423/00

  Presence of polyolefin · CPC title