Resins

Polyurethane products first made their appearance in the market place in the late 1930’s .These were afteran intensive investigation by Dr Otto Bayer who was looking for synthetic fiber to replace nylon. Once the basic technology was understood, new applications for foams (1941) and elastomers (1943) were developed. In the early 1950’s, commercial applications appeared.
The variety of raw materials as well as the range of different manufacturing techniques enabled pioneers to make a seemingly endless of tailor – made products with different physical properties. These include soft foams, rigid structural and insulation foams, soft and hard elastomers and coatings.
Processing techniques include casting, spraying, foaming, reaction injection molding injection molding extrusion and painting.

Basic chemistry

Polyurethane is a name that is given to resin that contains urethane groups. The urethane groups in the molecule give the end product certain unique properties.
A urethane group is formed when an Isocyanides and hydroxyl chemical react together.
The component containing the hydroxyl group is referred to as the polyol component and the component containing the ISO cyanate groups is referred to as the ISO cyanate (ISO) component. There are a large number of raw materials available and this means polyurethanes are of the one of the most versatile product on the market.
Most polyurethane consists of large molecules made by reacting various combination of following these basic materials together:

1. Diisocynate : e g TDI , MDI,PPDI
2. Polyol: e.g. Long chain polyether ,polyester or polycaprolactone
3. Crosslinker : Such as glycol or diamine

Note: Prepolymers are resin where the diisocyanate and polyol have been pre-reacted under carefully controlled condition. To make useful polyurethane, very high moleculeweight (macromolecules) must be achieved. This means that the OH: NCO9polyol: ISO) ratio must be correct and component and two components must be mixed thoroughly. (The component react if are in contact with each other)

HI-PACK Plasticizing Polyurethane Resin

HI-PACK plasticizing polyurethane resins are intended for nitrocellulose based inks and coatings systems. An extensive range of aromatic based HI-PACK products are available in a choice of hardness and plasticizing effects, which can be applied to both, rigid and flexible substrates. The grades listed in this document represent the most commonly used products with a choice of nonvolatile content, viscosity and solvent release characteristics. All conventional HI-PACK products are supplied as isocyanate

HI-FILM Film forming range of Polyurethane Resins.

Pot Life : Pot life of mixed Cross Linking Resin is about 6 Months.

Self Life : Shelf life of Cross Linking Resin / unopened / undamaged packing under Normal s storage condition is 1 year.

Dilution : Dilution is recommended by using recommended Solvent.

Coextruded oriented polypropylene

HI-FILM polymer contains both polyether and polyester, high molecular weight structures. HI-FILM comprises a range of solvent based film forming urethanes, which can be used on a wide variety of substrates where a demanding performance calls for high quality inks. HI-FILMS polymers have been formulated to lower the non volatile content for cost effectiveness. Special grades have been developed for vinyl substrates in combination with vinyl co-polymers. All conventional HI-FILM products are:

HI-FILM Aliphatic Film forming range of Polyurethane Resins.

Resin in this category are 100% aliphatic and prepared by chain extension of pre-polymer and diamine, nitrocellulose compatible and ethanol dilutable in all proportion.

Introduction

HI PACK 115 is solvent born non-reactive, thermoplastic polyurethane resin. This is used as an adhesion promoting and flexibilising resin for other film forming ink binders. The resin is used to formulate solvent based flexo and gravure inks for packaging films, especially, Poly, Polyester, BOPP, Polyolefin films. Inks based on this resin are recommended for surface printing as well as laminating applications.

1. Type
2. Appearance
3. Total solids (% w/w)
4. Viscosity In Brookfield
   Viscometer (25°C)
5. Volatiles
6. Flash point °C (C.C.)
7. Density (20°C) (kg/l)
8. Acid Value

1. Non-Reactive Polyurethane
2. Transparent Solution
3. 70
4. 1700-1900
5. 27% ethyl acetate + 03% NPA
6. 5
7. 1.004
8. 0.5 -1 (Max)

Application

• Flexo & gravure inks with excellent press behavior for printing common flexible packaging films like polyolefins, PET, aluminum foils & metalized films.
• Blending with hard resins may be required to eliminate tackiness. The use of nitrocellulose should be in appropriate ratio to ensure the lamination adhesion, low solvent retention.
• At the time of Printing on PET films adhesion promoter is not required.
• Recommended adhesion promoter while printing on Polyolefin & BOPP Films.

Key Benefits

• Balance of adhesion & alcohol solubility
• Excellent compatibility with alcohol soluble nitrocellulose
• Good adhesion on aluminum foils
• Very Flexible
• Non-blocking films even at high temperatures
• Solvent retention values are very low.

Recommendation for end-use

Packing

Shelf Life

Safety

Introduction

Whilst adhesion of PVB based inks to polypropylene films is good, it can be improved further by the addition of HI-AID 250.The effects of HI-AID producHI PACK 116 is a softer version of HI-Pack 115. This is used as an adhesion promoting and flexibilising resin for other film forming ink binders. The resin is used to formulate solvent based flexo and gravure inks for packaging films, especially, Poly, Polyester, BOPP, Polyolefin films. Inks based on this resin are recommended for surface printing as well as laminating applications.

1. Type
2. Appearance
3. Total solids (% w/w)
4. Viscosity In Brookfield
   Viscometer (25°C)
5. Volatiles
6. Flash point °C (C.C.)
7. Density (20°C) (kg/l)
8. Acid Value

1. Non-Reactive Polyurethane
2. Transparent Solution
3. 70
4. 1700-1900
5. 27% ethyl acetate + 03% NPA
6. 5
7. 1.07
8. 0.5 -1 (Max)

Application

• Flexo & gravure inks with excellent press behavior for printing common flexible packaging films like polyolefins, PET, aluminum foils & metalized films.
• Blending with hard resins may be required to eliminate tackiness. The use of nitrocellulose should be in appropriate ratio to ensure the lamination adhesion, low solvent retention.
• At the time of Printing on PET films adhesion promoter is not required.
• Recommended adhesion promoter while printing on Polyolefin & BOPP Films.

Key Benefits

• Balance of adhesion & alcohol solubility
• Excellent compatibility with alcohol soluble nitrocellulose
• Good adhesion on aluminum foils
• Very Flexible
• Non-blocking films even at high temperatures
• Solvent retention values are very low.

Recommendation for end-use

Packing

Shelf Life

Safety

Introduction

HI-Film 127 is a film forming, non-reactive urethane pre-polymer designed for use in flexo or gravure packaging inks. HI-Film 127 is compatible in all proportions with nitrocellulose, has excellent reducibility with alcohols and ester sand has low odour and high flexibility.

1. Type
2. Appearance
3. Total solids (% w/w)
4. Viscosity In Brookfield
   Viscometer (25°C)
5. Volatiles
6. Flash point °C (C.C.)
7. Density (20°C) (kg/l)
8. Acid Value
9. Amine Value

1. Film Forming Resin
2. Transparent Solution
3. 30
4. 2500-3500
5. 58/% ETAC + 12% NPA
6. N.A.
7. 0.9
8. 0.5 -1 (Max)
9. <1.0

Application

• High performance flexo and gravure inks for printing on common flexible packaging like PET (Chemically Treated), polyolefins, aluminum foils & metalized films.
• Blending with the hard resins may be required to eliminate residual tackiness.
• The use of nitrocellulose must be minimized to ensure adhesion, lamination bond strengths and low solvent retention.
• Flexo & gravure printing inks

Key Benefits

• Film former with low tackiness
• Soluble in alcohol rich mixtures
• Fully compatible with alcohol soluble nitrocellulose
• OH functionality allows pigment wetting
• Solvent retention values are substantially lower than those conventional inks

Recommendation for end-use

Packing

Shelf Life

Safety

Introduction

HI-Film 128 is a film forming, non-reactive urethane prepolymer designed for use in flexo or gravure packaging inks. HI-Film 128 is compatible in all proportions with nitrocellulose, has excellent reducibility with alcohols and ester sand has low odour and high flexibility.

1. Type
2. Appearance
3. Total solids (% w/w)
4. Viscosity In Brookfield
   Viscometer (25°C)
5. Volatiles
6. Flash point °C (C.C.)
7. Density (20°C) (kg/l)
8. Acid Value
9. Amine Value

1. Film Forming Resin
2. Transparent Solution
3. 30
4. 1000-1200
5. 46% ETAC+4%NPA+20% MEK
6. N.A.
7. 0.9
8. 0.5 -1 (Max)
9. <1.0

Application

• High performance flexo and gravure inks for printing on common flexible packaging like PET (Chemically Treated), polyolefins, aluminum foils & metalized films.
• Offer excellent adhesion to a wide range of flexible films.
• The use of nitrocellulose must be minimized to ensure adhesion, lamination bond strengths and low solvent retention.

Key Benefits

• Film former with low tackiness
• Soluble in alcohol rich mixtures
• Fully compatible with alcohol soluble nitrocellulose
• Excellent press behavior for printing on flexible packaging films like polyester, polyolefin, aluminum foil and metallized films.
• When properly formulated inks show excellent adhesion and lamination bond strengths to various flexible packaging films.
• Solvent retention values are substantially lower than those conventional inks

Recommendation for end-use

Packing

Shelf Life

Safety

Introduction

HI-Film 129 is a film forming, non-reactive urethane pre-polymer designed for use in flexo or gravure packaging inks. HI-Film 129 is a aliphatic polyether modified polyurethane resin. Hi-Pack 129 is has a good reducibility with alcohols and is completely soluble in esters. Ink produced from Hi-Pack 129 have low odour and produce hard films.

1. Type
2. Appearance
3. Total solids (% w/w)
4. Viscosity In Brookfield
   Viscometer (25°C)
5. Volatiles
6. Flash point °C (C.C.)
7. Density (20°C) (kg/l)
8. Acid Value
9. Amine Value

1. Film Forming Resin
2. Transparent Solution
3. 30
4. 600-800
5. 67/% ETAC + 03%NPA
6. N.A.
7. 0.9
8. 0.5 -1 (Max)
9. <1.0

Application

• Hi-Pack 129 is intended for use in inks for flexible packaging.
• Blending with hard resins may be required to eliminate residual tackiness.
• The use of nitrocellulose must be minimized to ensure adhesion, lamination bond strengths and low solvent retention.
• Offer excellent adhesion to a wide range of flexible films.

Key Benefits

• Fully aliphatic polyurethane
• Film forming with low tackiness
• Soluble in alcohol rich mixtures
• Fully compatible with alcohol soluble nitrocellulose
• Excellent press behavior for printing on flexible packaging films like polyester, polyolefin, aluminum foil and metallized films.
• When properly formulated inks show excellent adhesion and lamination bond strengths to various flexible packaging films.
• Solvent retention values are substantially lower than those conventional inks

Recommendation for end-use

Packing

Shelf Life

Safety

A. PRECAUTION

1. General

Liquid non-reactive polyurethane resins are themselves classified as nonhazardous but, because all contain flammable, relevant solvents, relevant handling precaution must be observed.

2.Skin Protection - Avoid contact with skin; wear impervious gloves at all times.

3.Eye protection- Avoid contact with eyes; wear eye protection at all times.

4.Respiratory Protection
Wear approved suitable vapor mask where vapor may be generated.

5.Protection From fire
In the event of fire suitable extinguishers are water carbon dioxide or dry chemical powder. Combustion of the resins may yield toxic-products therefore fire fighters should wear suitable protective clothing including breathing apparatus.

6.Environmental Consideration
Not normally dangerous for the environment.

B. FIRST AID

1. Skin Contact
Remove all contaminated clothing; wash with plenty of soap and water

2.Eye Contact
Irrigate with eye wash solution or clean water holding the eye lids apart for at least 10 minutes. Obtain medical attention

3.Inhalation
Remove patient from exposure .Obtain medical attention

4.Ingestion
Drink plenty of water or milk. Do not induce vomiting .Obtain medical attention if ill effect occurs.

C. STORAGE

1.Solvent containing, store away from sources of ignition.

2.Keep containers tightly closed and dry

D. SPILLAGE

Ensure suitable personal protection during removal of spillages on to sand earth or any suitable absorbent material, and place closed containers for disposal

E. DISPOSAL

Do not allow into drains, water courses or where ground/surface waters may be affected. Disposal should be in accordance with regulations made under the special Waste Regulation and Environmental Protection Acts or appropriate local / national regulations