The potential of natural materials and science

Company Profile

For nature and mankind to coexist.

Supporting the enhancement of sustainable
lifestyles through science—

We are a leading company that upholds anenvironment-responsive-type business model.

1Yasuhara Chemical has pursued the potential of terpene
technology, which uses the blessings of nature—turpentine oiland orange oil—as raw materials to develop safe, high-quality
products. Terpene is produced through the biosynthesis processthat takes place within a plant, and is found abundantly innature. In order to ensure a plentiful and stable supply of thisindustrial material, large volumes of turpentine oil from pinetrees and orange oil from orange peels are collected. Today, withthe entire world involved in preventing further global warming,the industrial world has great expectations for terpene, arenewable material that is derived from plants and results in lesscarbon dioxide emission than petroleum-based products. Unlike
petroleum, which will possibly become depleted in the future,terpene is a vitally important raw material derived from plants,
which are repeatedly renewed through the blessings of the Sun.
Yasuhara Chemical was the first company in Japan to establish
an industrial production system for terpene resins through its
unique technology. As the top chemical products manufacturerof terpene resins, we develop and supply products used in various
fields, such as adhesive tapes, adhesives, fragrances, and polymer
modifiers. The originality of our products has gained a highevaluation both domestically and overseas.

As a creative company that fuses the blessingsof nature with scientific technology, we seek toexpand the fields that will improve industries andlifestyles.
The production activities of Yasuhara Chemical are founded on
this basic principle of a renewable and sustainable social cycle (apermanently renewable social cycle), in which we continuously
strive for a sustainable future.

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Our track record of trustMore than sixty years of pine oil production. Looking back, we see a continuing path made up ofcountless connections and trust.

Company History

Chopping pine root

Early day of Takagi Plant

Founding Members(Founder Hiromu Yasuhara / second from left)

1946
1947

1949
1959
1960
1961
1962
1966

1967
1969
1972
1977

1980
1981
1984
1988
1989
1995
1996
1997
1999
2000
2005
2007
2008
2010
2014
2016
2017
2018
2020
2022
2023

Founder Hiromu Yasuhara discovers pine oil production
Yasuhara Oil Refining Plant established (Konu-cho, Konu-gun, Hiroshima
Prefecture, now known as Miyoshi City)
Production of terpene, rosin, pine tar started
Mesaki Plant newly operated (a turpentine oil refining plant)
Yasuhara Yushi Kogyo Co., Ltd. established (headquarters at Mesaki-cho, Fuchu
City, Hiroshima Prefecture)
Sendai Plant newly operated (a paper sizing agent plant)
Takagi Plant newly operated (turpentine oil refining plant)
Tokyo branch Office opened
Hot melt adhesive (HIRODINE) production starts at Mesaki Plant(Affiliated company Hirodine Kogyo)
Hirodine Kogyo Co., Ltd. established
Hot melt adhesive business transferred from Yasuhara Yushi Kogyo
Head office relocation renewal of head office building in Takagi-cho, Fuchu
City, Hiroshima Prefecture
Osaka Sales Office opened
Research and development facility established in Takagi Plant
Takagi Plant in YS Plant (terpene resin manufacturing equipment) constructed(Affiliated company YS)
YS Co., Ltd. established (trade division of Yasuhara Yushi Kogyo and Hirodine Kogyo)(Affiliated company YS)
Company name changed to Hirodine Co., Ltd.
(Affiliated company Hirodine Kogyo)
Soryo Plant newly operated(Hot melt adhesive manufacturing plant)
Niihama Plant newly operated (turpentine resin refining plant)
Sendai Plant relocated to Minato-cyo, Sendai City, Kagoshima Prefecture
Company name changed to YASUHARA CHEMICAL Co., Ltd.
Listed on Hiroshima Stock Exchange (merged into Tokyo Stock Exchange in 2000)
Listed on 2nd Section of Osaka Securities Exchange (Delisted in 2003)
Merger with Hirodine Kogyo Co., Ltd.
Ukai Plant constructed (hot melt adhesive and laminated film plant at Ukai-cho,
Fuchu City, Hiroshima Prefecture)
Listed on 2nd Section of Tokyo Stock Exchange
Merger with Hirodine Co., Ltd.
Fukuyama Plant constructed (a special monomer manufacturing plant at Minooki-cho, Fukuyama City,
Hiroshima Prefecture
Mesaki Plant closed
Construction of research and development facility completed at Fukuyama Plant
Technical and welfare buildings completed at the Fukuyama Plant
Tokyo Office relocated to Chuo-ku, Tokyo
Takagi Plant was integrated into the Fukuyama Plant, and the Takagi Plant was renamed to the Takagi
Works of the Fukuyama Plant
Sendai Plant Closed.
Osaka Branch office relocated to Miyahara, Yodogawa-ku, Osaka City
Fukuyama Plant Takagi Work Site closed
Moved to Standard Market of the Tokyo Stock Exchange
Integration of Osaka Branch Office into Tokyo Branch office.
Integration of Soryo Plant into Ukai Plant

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Connections with the world

We have also built a high degree of trustwith the rest of the world.
We import raw materials such as turpentine oil and oranges from China and South America. We process
them into highly value-added products and distribute them both domestically and throughout the world.
Products created through high technical skills are highly regarded overseas as well.

ImportUnited States of America, República Federativa do Brasil,
Republic of Chile, People's Republic of China, New Zealand

ExportUnited States of America, Canada, European Union,
People's Republic of China, Republic of Korea, Taiwan,
Malaysia, Republic of Singapore, Commonwealth of Australia

4Plants, Business Office, Office

Expanding our production facilities
Business network
Ukai Plant

Fukuyama Plant

Product item:
Hot melt adhesive
Lamination film

Product item:
Chemical products

Head Office

ShimaneHiroshima

Okayama
Ukai Plant
Fuchu-city

Head Office
Fukuyama-city
Hiroshima-city

Fukuyama Plant
Research anddevelopment building

Map details

Niihama Plant
Product item:
Terpene resin
Chemical products5Research and development building

To address the issues and needs of our customers.

That is the foundation of research and development.
The foundation of our research and development is the perspective of ourcustomers.
Our research and development starts with our understanding the products of ourbusiness partners and sharing their values.
The focus of research and development at Yasuhara Chemical is our creativetechnology, which enhances added value by drawing out the properties of raw
materials. Terpene, derived from a natural material, is environmentally-friendly andfunctions fundamentally as a renewable material. By optimizing this fundamental
function and applying our creative technology to address our customers’ issues
and social needs, we have succeeded in creating completely new products. We try
to be better partners by supplying truly highly value-added products. Our researchand development strive for this, the result of which is the high credibility we havedeveloped.
In 2010, with the objective of further enhancing the “Safety,” “Communication,”and “Creativity” of our research and development, a new research anddevelopment building was put into operation as part of our commitment tofocusing on cutting-edge issues and technology development.

Evaluation

Needs

planning

issues

Product

testingdevelopment

Tokyo Branch OfficeCore technology of Yasuhara Chemical
Precise distillation

Isomerization
Organic synthesis
Electronic materialIntermediary pharmaceutical material

Address issues related toenvironmental fields

Application study of
bioactive substances

Polymerization technology
Terpene resins

Processing

Refining materials
High degree of purification

Terpene derivatives

Laminating business

Composition and evaluation
Development of applications
Hot melt business

Practical application ofelectronic and opticalmaterials

Hydrogenated reaction

High degree of analysis

Hydrogenated terpene phenolic resins synthesis

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Quality control

Product information
Pine
Orange

The fusion of natural raw materials and scientifictechnology generates a wide variety of products.

Terpene resin

TerpeneUsing our core technology,
the terpene types are
separated and used asindustrial raw materials.

Our key product, terpene resin, is known as a tackifying resin. Whenterpene resin is combined with various polymer materials such as natural
rubber or styrene elastomer, adhesive properties are drawn out as aresult of the plasticizing action. It is indispensable in the manufacture ofadhesives and tackifiers.
In addition to terpene resin, which is produced using only the renewablematerial terpene monomer, our line-up ranges from low softening point
to high softening point products such as aromatic modified terpene resin
and terpene phenolic resin, which display excellent compatibility withhigh polarity polymer materials such as acryl by copolymerization withpetroleum-based components.
Furthermore, hydrogenated terpene phenolic resins, with their excellent
color hues, thermal stability, and weather resistance are highly regarded
in many industries as 'natural' tackifiers for their adhesive components
and as modifying agents for various polymers.

[Applications]◎Tackifiers, Adhesives ◎Modifier of polyolefins ◎Ink
◎Modifier of various polyolefins ◎Paints ◎Sealants

Chemical products
Turpentine oil extracted from plants is used as a starting material for avariety of synthetic fragrances.
Our gum turpentine and α -pinene essential oils are derived from pinetrees. Derivatives of these products, such as terpineol, myrcene, and alloocimene, are also produced and supplied as raw materials for fragrancesused in toiletries including detergents and soaps, toothpaste, and bathagents. These naturally derived solvents have characteristic properties
not found in petroleum-based solvents, and thus are attractive in manydifferent applications and markets, including the IT industry.
D-limonene, a main component of the essential oil derived from citrus
fruits (orange oil), is used not only in fragrances, air fresheners, andmasking agents, but also as a cleaning component in detergents.

[Applications]◎Fragrances ◎Solvents ◎Electronics◎Vehicle for pastes

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Hot melt adhesive

Lamination film

Our hot melt adhesives improve productivity in various
industries such as food, packaging, automobiles, and

HIROTAC film provides a gloss finish. It is producedby laminating biaxially-oriented polypropylene (OPP)

construction materials by enabling adhesion or sealing of
substrates without the use of solvents. They also contribute

film with our unique adhesive resin. It is a pre-coatedfilm that is designed to enable easy thermal lamination

toward resolving environmental issues such as conservationof energy and increase consumer convenience.
Production of a wide range of hot melt adhesives withviscosities ranging from low to super high from polyolefinbases to special elastomers is available to meet the various
needs of our customers. We also provide novel solutions foradhesives.

for the beautification and protection of surfaces suchas printed paper, synthetic paper, and plastic film. Its
three major characteristics include the following:
1. Easy lamination by heating and pressing HIROTAC toan adherend.
2. Vivid, glossy finish with excellent adhesion.
3. No use of organic solvents for a comfortable andsafe work environment.

[Applications]◎Packaging◎Food package, Easy peelable lid◎Sealing, Rubber based PSA◎Assembly for automotive◎Life supply, Permanent PSA◎Air filter◎Cushioning Material, Plastic corrugate board◎Hand gun application[Applications]◎Gloss finish of printed materials

8Terpene resin
Product nameProduct type
Terpene ResinYS Resin PX, PXN

Aromatic Modified Terpene ResinYS Resin TO

Terpene Phenolic ResinYS Polyster U, T, S, G, N, K and TH

Styrene ResinYS Resin SX

Hydrogenated Terpene Phenolic ResinYS Polyster UH

Hydrogenated Styrene ResinYS Resin SG,SM

Development of applications

YS Resin TO 125

Pressure sensitive tape

PSA for labels

Plastic modification

Hot melt adhesive

Chemical products
Product nameProduct type
Solvents, Raw materials for fragrances

Gum Turpentine N α-Pinene β-Pinene Myrcene
Dihydro Terpineol Terpineol P-Menthane

Low molecular weight polyethylene wax

NeowaxD-Limonene

Vehicles for pastes
Development ofapplications

D-Limonene

NeowaxCitrus fragrance raw materials
Solvents

Traffic paint9

Vehicles for pastes

Multilayer chip capacitors

Hot melt adhesive
Product type

Product name

Hot melt adhesives for packaging

Hirodine 2000 series

Rubber-based
Hot melt PSAs/adhesives

Hirodine 1000 series
Hirodine 5000 series

Hot melt adhesives for air filters

Hirodine 2000 series
Hirodine 8000 series

Hot melt adhesives for cushioning

Hirodine 1000 series
Hirodine 8000 series

Hot melt adhesives for coating

Hirodine 7000 series

Stick-type Hot melt adhesives

Hirodine ST series

Development of applications

Assembly

Packaging

Extrusion lamination

Sealing material

Lamination film
Product name

Development of applications

Hirotac series

Decorations

Yasuhara Chemical is seen even in a place like this.
Used in many aspects of life.

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Quality and Environment

We are engaged in various activities
to achieve a sustainable lifestyleand society.
At Yasuhara Chemical, we wish to contribute to building asustainable and abundant environment by taking the environment
into account in all aspects of our corporate activities, from thepurchase of raw materials to manufacturing, distribution, andsales.
To that end, in 2006 we drew up a Fundamental Policy on
Environment and Safety, and in December of each year, wehold an environment security meeting. The meeting consists ofreporting the results of activities and discussing the key objectives
regarding environmental and safety issues for the next fiscal year.
Key objectives are expressed through numerical targets as muchas possible to enable an objective assessment of achievement rate.
In addition to this target, all our plants also set 3-year mediumterm targets for continuously engaging in activities that improvethe environment.

( Fundamental Policy on Environment and Safety)
1. Contribute to society by providing products that promote
environmental protection (conservation of resources, recycling,elimination of substances harmful to health) in all industrial
fields by developing safe products that reduce the burden on
the environment through the effective utilization of natural
substances.
2. Every effort shall be made to protect the environment by
reducing the environmental burden across the entire life cyclefrom product development to disposal.
3. Ensure the safety of our employees and the local community bycontinuing to operate accident-free and hazard-free.
4. Ensure the safety of materials and products to protect thehealth of our employees, distributors and customers fromhazardous substances.

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Yasuhara Chemical’s
Quality management system ISO 9001
Our company acquired ISO 9001, the first principle of which is the continuous provisionof high-quality products and services. We are proactively engaged in quality management
based on ISO9001 to achieve a higher level of trust and customer satisfaction.
Continuous improvement flow through quality management system
Flow ofinformation
Responsibilityof the business
owner

Customerrequirements

Operational
management of
raw materials

Flow ofMeasurements, information
analysis andimprovements

Realization of
products

Input

Customersatisfaction

OutputEnvironment management system ISO 14001
We believe that reducing the environmental burden is critical for sustainable
development. To that end, we have applied the environment management systemthroughout the company to conserve energy, prevent global warming, and curtailindustrial wastes. Specifically, every year, various issues such as energy conservation
measures, CO 2 emission reduction, emission and transfer volume of substances subject to
PRTR, and consigned volume of industrial waste disposal are presented in numerical data
in a report on the environment.

Acquired ISO certification
Ukai Plant…

ISO9001 ISO14001

Fukuyama Plant…

ISO9001

Niihama Plant…

ISO9001 ISO14001

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Company name

YASUHARA CHEMICAL Co., Ltd.

Foundation

April, 1947

Establishment

February 24, 1959

Representative

Representative Director President Teiji Yasuhara

Paid-in capital

1,789,560,000 yen

Securities code

4957 (Standard Market of the Tokyo Stock Exchange)

Fiscal Year

March 31

Number of employees

230 (as of March 2024)

Address

1071 Takagi-cho, Fuchu-city, Hiroshima 726-0013 Japan+ 81-847-45-3530

Switchboard number
Switchboard fax number+ 81-847-44-6070+ 81-847-45-8639

Direct connect fax for sales+ 81-847-44-6080

Homepage address

https://w w w.yschem.co.jp/

Direct connect telephone for sales

Business Office, OfficePlants[Tokyo Branch Office]5th floor Mitsui Sumitomo Kaijyo Tepco Bldg., 1-6-1, Kyobashi,
Chuo-ku, Tokyo 104-0031 Japan[Ukai Plant]
800-111, Ukai-cho, Fuchu-city, Hiroshima 726-0002 Japan

Sales Department
TEL:+81-3-5159-3411 FAX:+81-3-5159-3422
Procurement Department
TEL:+81-3-5159-3870 FAX:+81-3-5159-3880[Fukuyama Plant]
117, Minooki-cho, Fukuyama-city, Hiroshima 721-0956 Japan[Niihama Plant]
1-7-7, Kuroshima, Niihama-city, Ehime 792-0892 Japan13

Delivering renewable material
in a value-added form.

Since its establishment, our company has supplied terpene as asafe and high-quality product derived not from fossil fuel but
from nature.
Fossil fuel will not only be depleted eventually, but it poses
severe problems that lead to destruction of the environment.
This is no longer an era of mass production of low-priced goods.
Mankind is starting to reassess the state of societies based on
fossil fuel. In the midst of this, attention is turning to terpene
as a renewable material. What the next generation seeks are
sustainable industrial activities that rely on renewable materials.
This is what Yasuhara Chemical has been pursuing for many
years.
We have also placed great value on the concept of “going
hand in hand together.” We take pride in having built trustwith our customers by providing what the customer truly seeks
and superior products through our research-and-development
efforts based on an understanding of our customers’ products and sharing their values. These highly value-added
products that were generated from such interactions with our customers have gained global acceptance.
This is the long-awaited shift in the social paradigm that we would like to have in order to propel us forward
together with a shared vision of how to realize a sustainable and bountiful future.
Representative Director President

Teiji Yasuhara14’
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