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Polyisobutylene CAS 9003-27-4

Molecular Formula: C4H8

Formula Weight: 56.10632

ZSpharmac: Polyisobutylene Supplier

Product Name: Polyisobutylene
CAS No: 9003-27-4
Purity: 99%

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Basic Info

Product Name:Polyisobutylene
Other Names:2-Methylpropenepolymer
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Cosmetic Raw Materials
Appearance: Colorless Liquid
EINECS No.:618-360-8
Provide:Polyisobutylene MSDS;
Polyisobutylene COA

What is Polyisobutylene?

Polyisobutylene (PIB) is an anemic, odor free, risk-free scoop thick or semi-solid substance, which has terrific chemical buildings such as warmth resistance, oxygen resistance, ozone resistance, environment resistance, ultraviolet resistance, acid and also alkali resistance. Polyisobutylene is an anemic, unsmelling, risk-free isobutylene homopolymer. Due to numerous prep job comes close to along with treatment conditions, the molecular weight of polyisobutene differs in a large range. When the molecular weight of a lot of the things gets to 10,000 ~ 200,000, it will change from a thick liquid to a semi-solid, and also after that to a rubber-like elastomer. Polyisobutylene is immune to acid, antacids, salt, water, ozone along with aging, and additionally has impressive air tightness along with electrical insulation.

Polyisobutylene Property

Melting point 54-56 °C
Boiling point 300 °C
density 0.92 g/mL at 25 °C (lit.)
refractive index n20/D 1.51
form slab/chunk


Polyisobutylene Uses

1. Sealant: polyisobutylene has exceptional air resistance, maturing resistance, weather resistance as well as additionally water vapor impermeability, which is exceptionally proper for the manufacturing of various sealers and also hollow glass sealants, which can improve the flexibility as well as leaks in the structure of its points.

2. Rubber change: Polyisobutylene has outstanding aging resistance as well as likewise plasticity, and in addition can be used for rubber adjustment. Currently, it is thoroughly utilized in the production locations of high-voltage shielding self-adhesive tape, rubber protecting strip, and so on 3. Paraffin wax: After polyisobutylene is combined with paraffin wax or microcrystalline wax, it will certainly boost its tensile structures as well as likewise improve its product brittleness, particularly for the item packaging of frozen foods, which can make it have greater soft qualities in addition to additionally resistance acidic.

4. Ink: Polyisobutylene is added to the ink to work as a thickener as well as similarly dispersant. This sort of ink is utilized for printing paste ink, polyethylene revolving xeroxing, along with ink. In printing ink, polyisobutylene acts as a thickener to stop ink fractured.

5. Lubing oil: It has really crucial usages in the fields of lubricating oil additives, post-processing of polymer items, drug in addition to furthermore cosmetics, artificial additive, etc. Amongst them, reduced family member molecular weight PIB can be utilized to develop ashless dispersants in addition to adhesives, sealers, pharmaceutical as well as furthermore aesthetic lotions, etc.

Polyisobutylene with a fairly decreased molecular weight is mainly utilized as lubricating oil ingredients, pesticides, electrical cord safeguarding oils, protecting putty, adhesives, plasticizers, conditioners, pigment dispersants, ink tackifiers, metal corrosion avoidances, all-natural natural leather Impregnation agent, highway keeping in mind paint, and more; poly(iso)butylene with fairly high molecular weight is mainly made use of as lubricating oil index improver, glue, self-adhesive, pressure-sensitive adhesive, guarding product, chewing gum tissue base item, water-proof membrane layer, Shock-absorbing materials, energy-absorbing items, safety and security products, and more. Among them, costs polyisobutylene (polyisobutylene with a vinylidene dual bond at the incurable setup, referred to as HRPIB) describes polyisobutylene products with an ordinary molecular weight of 500-5000 as well as also an incurable hydroxyl product above 60%. This polyisobutylene has a high Level of sensitivity, can introduce suitable groups using a moderately very easy procedure, can be taken advantage of as a resources for the prep work of ashless dispersants along with additionally cleansing agents for lubing oils along with gas!

Classification of Polyisobutylene

Different molecular weights: low, medium and high molecular weight polyisobutylene

High and low mole fractions of terminal vinyl groups: high reactive polyisobutene and low reactive polyisobutylene

Different degrees of hygiene: food-grade polyisobutylene and technical-grade polyisobutylene

Different polymerization processes: bulk polyisobutene and solvent polyisobutene

The sources of raw materials are different: pure isobutene polyisobutene and mixed carbon tetrapolyisobutene catalysts are different, aluminum-based polyisobutene and boron-based polyisobutene.

There are two commercially available polymers not commonly referred to as polyisobutylene. One is butyl rubber, which is a copolymer of isobutylene and 1%-3% isoprene. Butyl rubber competes with polyisobutylene in adhesives, sealants, fillers, etc. The other is polybutene-1. The performance of polybutene-1 is very similar to that of polyisobutene at low molecular weight, but the performance difference is obvious at medium and high molecular weight. 1 Rubber-based adhesives and sealants.

Polyisobutylene can be used in adhesive and sealant formulations. Its consumption accounts for about 13%-15% of the total global consumption. Polyisobutylene is especially suitable for environments that are sensitive to moisture and require insolubility in water. Usually low molecular weight polyisobutylene is used as a tackifier or plasticizer, while medium and high molecular weight polyisobutylene is used to adjust elasticity, extensibility, cohesion and air tightness; polyisobutylene products have better aging resistance than rubber-based products, and the stickiness lasts , can be used on surfaces that other polymers cannot adhere to. Polyisobutylene PB1300

Properties of Polyisobutylene

01 Qualities of polyisobutylene
Polyisobutylene is a colorless, odor-free, non-toxic isobutylene homopolymer. As a result of different preparation techniques and procedure problems, the molecular weight of polyisobutene differs in a vast array. When the molecular weight of many items reaches 10,000-200,000, it will certainly change from a viscous fluid to a sticky semi-solid, and afterwards to a rubber-like elastomer. Polyisobutylene is resistant to acid, antacids, salt, water, ozone and aging, and also has exceptional air rigidity and also electric insulation. It has great compatibility with wax, asphalt, polyethylene, etc

02 Features of high molecular weight polyisobutylene

High molecular weight polyisobutylene is a regular saturated linear polymer, its head team is -CH3, and its tail group is -CH2-C= CH2 or -CH= C-CH3. It has great warmth resistance, light resistance and ozone aging resistance, as well as has perfect chemical security. At space temperature, it is stable against water down antacids and also focused acid, antacid and also salt. Polymer polyisobutylene still has excellent water resistance and airtightness at higher temperature levels, as well as its dielectric properties are fairly exceptional. High molecular weight polyisobutylene is generally in the solid state.

03 Features of reduced molecular weight polyisobutylene

Reduced molecular weight polyisobutene (referred to as oligoisobutene) is a colorless, odor free, safe thick object, which is used in the fields of oil ingredients, adhesives, eating gum tissue ingredients, as well as mixing with other high polymers. The application of oligomeric isobutylene primarily depends upon its thickness behavior, thermal stability as well as electric insulation in many fields. Oligomeric isobutylene has great warm resistance, oxygen resistance, ozone resistance, ultraviolet resistance, acid resistance, alkali resistance and various other properties., Its development coefficient is small, it does not have damaging substances in the dielectric, and also it has outstanding electrical insulation.

Oligomeric isobutylene is a Newtonian liquid with a high viscosity index. It is suitable for thickness modification of oil products, 100% pyrolyzed without residual ash at high temperature, and also can be made use of as ash-free additive. Oligomeric isobutylene has great compatibility with polymer products, excellent compatibility with general non-polar compounds, and also has low-temperature dispersibility and high-temperature detergency. Reduced molecular weight polyisobutylene is normally viscous fluid or semi-solid.

04 Characteristics of ordinary reduced molecular weight polyisobutylene

The performance features of normal low-molecular-weight polyisobutylene are: the material of methylvinylidene team at the end of the chain in the particle is reasonably low. Even if of its reduced content, only “chlorination route” as well as “catalytic thermal addition path” can be made use of in the preparation of lubricating oil ashless dispersant, resulting in “chlorination route” although it can considerably enhance polyisobutylene (PIB) and also maleic acid The conversion rate of acid anhydride (MA) reaction is high, but the chlorine web content in the end product is high, which is much less as well as much less prominent with customers; while the “catalytic thermal enhancement route” has lengthy reaction time, low conversion price as well as corresponding increase in cost as a result of the presence of different levels and also other issues are restricted.

05 Features of polyisobutylene

Polyisobutylene is a colorless, unsmelling, non-toxic isobutylene homopolymer. As a result of various preparation methods and procedure conditions, the molecular weight of polyisobutene differs in a wide variety. When the molecular weight of many items reaches 10,000-200,000, it will certainly transform from a viscous liquid to a sticky semi-solid, and after that to a rubber-like elastomer. Polyisobutylene is resistant to acid, antacids, salt, water, ozone as well as aging, as well as has superb air tightness as well as electric insulation. It has excellent compatibility with wax, asphalt, polyethylene, etc.

About Products:
If you need Polyisobutylene as a cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price.
As an experienced Polyisobutylene manufacturer and supplier, ZSpharmac will provide Polyisobutylene raw materials to customers all over the world for a long time.
Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

Help China Chemicals to benefit the happiness of human life
Become the most trusted chemical supplier in the world
Striver – oriented, enrich employees, customer first, deep service, seek development
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Cosmetic raw materials
  • Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.


Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.


After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.


Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.



You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.


1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

Get Polyisobutylene Quotation