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Hydrocarbon polymer modifiers with high aromaticity and uses thereof

A technology of hydrocarbon polymer and modifier, applied in the field of hydrocarbon polymer resin, which can solve the problems of reduced cohesive strength and high temperature resistance of adhesives

Pending Publication Date: 2022-05-24
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is well known that combining low-aromatic tackifying resins and / or plasticizing oils with styrenic block copolymer-based hot melt adhesives can result in reduced cohesive strength and high temperature resistance of the adhesive

Method used

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  • Hydrocarbon polymer modifiers with high aromaticity and uses thereof
  • Hydrocarbon polymer modifiers with high aromaticity and uses thereof
  • Hydrocarbon polymer modifiers with high aromaticity and uses thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0121] Preparation of rubber compositions

[0122] The rubber composition is manufactured in a suitable mixer using two successive stages of preparation: a first stage ( sometimes referred to as the "non-production" stage), followed by a second stage (sometimes referred to as the "production" stage) of machining at lower temperatures (usually below 110°C, such as 60°C to 100°C), finishing here A crosslinking or vulcanization system is introduced during stages; these stages have been described, for example, in applications EP-A-0 501 227, EP-A-0 735 088, EP-A-0 810 258, WO 00 / 05300 or WO 00 / 05301 described.

[0123] The first (non-production) stage is carried out in several thermomechanical stages. During the first step, the elastomers, reinforcing fillers and hydrocarbon polymer modifiers (and optionally, coupling agents and / or other The ingredients, with the exception of the crosslinking system, are introduced into a suitable mixer (eg a conventional internal mixer). Afte...

Embodiment 1

[0160] Analysis of Prior Art Hydrocarbon Polymer Additives

[0161] Tg and %HAr of prior art resins with at least one elastomer and prior art hydrocarbon polymer additives were evaluated. The first set of prior art additive samples (PA1, PA2, PA3, PA4, and PA5) each had: (a) from about 40% to about 80% by weight of dicyclopentadiene, cyclopentadiene, based on the total weight of the polymer additive and methylcyclopentadiene derived content: (b) a weight average molecular weight of about 100 g / mole to about 800 g / mole; and (c) a softening point determined according to ASTM D6090 of about 110°C to about 150°C. These dicyclopentadiene resins also include aromatic compounds such as styrene, xylene, alpha-methylstyrene, vinyltoluene and indene, as well as non-aromatic compounds such as linear C4 to C6 fractions or isomers thereof. Dicyclopentadiene-based additive and elastomer combinations have been shown to improve performance characteristics in tires, such as high wet traction ...

Embodiment 2

[0180] Analysis of HPM of the Invention

[0181] HPM samples 5 to 9 were prepared by varying the feed stream in a thermal polymerization unit known to achieve a certain cloud point of the tackifier. After processing in the thermal polymerization unit, the tackifier was nitrogen stripped at 200°C. The properties of the hydrocarbon polymer modifiers are provided in Tables 5A, 5B, 6A and 6B below. The modifiers described herein can be prepared by known methods. See, eg, Kirk-Othmer Encyclopedia of Chemical Technology, 4th Edition, Vol. 13, pp. 717-744. One method is to thermally polymerize petroleum fractions. Polymerization can be batch, semi-batch or continuous. Thermal polymerization is generally carried out at a temperature of 160°C to 320°C, for example at about 260°C to 280°C, for a period of 0.5 to 9 hours, usually 1.0 to 4 hours. Thermal polymerization is usually carried out in the presence or absence of an inert solvent.

[0182] The inert solvent may have a boilin...

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Abstract

Described herein are hydrocarbon polymer modifiers for use in various applications. The hydrocarbon polymer modifier comprises a cyclic component and has a glass transition temperature and Mn defined by the following two equations: (1) Tg > = 95-2.2 * (% H Ar); and (2) Tg > =-53 + (0.265 * Mn) and an aromatic content greater than 6 mol%, where Tg is the glass transition temperature of the modifier expressed in DEG C,% H Ar is the aromatic proton content in the hydrocarbon polymer modifier, Mn represents the number average molecular weight of the hydrocarbon polymer modifier, and x represents the number average molecular weight of the hydrocarbon polymer modifier. And the cyclic component is selected from fractions from a petroleum refining stream and / or C4, C5 or C6 cyclic olefins and mixtures thereof. The hydrocarbon modifiers are particularly suitable for high Tg applications where low molecular weight resins are required.

Description

[0001] priority [0002] This application claims priority to and the benefit of US Provisional Application No. 62 / 878,887, filed July 26, 2019, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] The present invention relates to hydrocarbon polymer resins, and more particularly to novel hydrocarbon polymer modifiers useful in various applications. Background technique [0004] Hydrocarbon resins are used in a variety of applications such as tire components, hoses, straps, footwear components, and vibration isolation equipment. In elastomeric compositions, for example, hydrocarbon resins are used as processing aids and to improve the properties of the elastomeric composition. The selection of ingredients for commercial formulation of elastomeric compositions depends on the balance of desired properties, application, and end use for the particular application. [0005] Typically, the raw ingredients and materials used in rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F32/00C08F232/00C08F132/00C09J11/08C08F212/08C08F232/06C09J145/00
CPCC08F32/00C08F232/00C08F132/00C08F232/06C09J145/00C09J11/08C08F212/08C09D145/00C09J2301/304
Inventor R·特里帕蒂R·P·拉贾D·W·瑟曼O·J·F·格欧吉恩A·K·瓦尔迪兹B·德高德玛丽斯L·考佩F·博内特
Owner EXXONMOBIL CHEM PAT INC