A weekly look at new products, innovations

Editor's Note: Each week, Rubber & Plastics News will take a look at some of the rubber industry's new products and innovations on www.rubbernews.com. Does your company have a new product or new innovation? To be considered for inclusion in this recurring feature, email [email protected].

Shin-Etsu Silicones of America, a U.S. subsidiary of Shin-Etsu Chemical Co. Ltd., has unveiled its NBN-30-ID cosmetic silicone modified film former materials.

The novel polymer was created by the introduction of a silicone group into a polynorbornene, Shin-Etsu Silicones said, which is a very rigid polymer. The end result enables the development of a diverse range of cosmetic formulations that offer excellent resistance to oil and water for a wide-range of cosmetics applications including: foundations, eye shadows, mascaras, lipsticks, skin lotions, creams, sunscreens and hair care products, the company said.

Shin-Etsu said the products offer cosmetic composition benefits including:

• Tough Film: Forms hard and tough film.

• Low Tackiness: When dried, provides film with smooth feeling and low tackiness.

• Flexibility: Provides highly flexible film while keeping hardness.

• Spinnability: Great spinnability. Enables development of cosmetics with good adhesion capability to eyelashes and others.

• Oil Repellency: Excellent oil repellency. Contributes long-lasting effect.

For more information, contact [email protected].

APS Elastomers has developed a hard thermoplastic polyurethane that it said is easier to extrude. The new series of TPUs offers the extrudability of softer grades providing tubing manufacturers the advantages of hard TPUs without their production drawbacks, the company said.

The specially formulated TPU enables a thinner wall for tubing, APS Elastomers said, which requires less material; allowing significant cost savings for tubing manufacturers.

The ability to use harder grades of TPUs increases productivity and cost efficiency; affording processors and original equipment manufacturers additional design options. Additionally, the TPUs offer higher burst pressures while retaining the advantages of softer TPUs, said the company. Ranging in Shore hardness from 50D to 74D, the TPU improves extrusion output without loss of melt viscosity or crystallization in the die or on the screw, it said.

For more information on TPUs TPEs, TPVs, as well as standard and custom grades, contact APS Elastomers at [email protected].

Master Bond Inc. has released MasterSil 152, a two-component, condensation curing system, developed for potting and encapsulation where an addition cured silicone cannot be used.

This system fully cures at room temperature in 24-48 hours, Master Bond said, and has low exotherm. MasterSil 152 features low shrinkage upon curing and has a 10 to 1 mix ratio by weight and delivers a long working life of six to eight hours after mixing, the company said.

MasterSil 152 combines low viscosity and electrical insulation properties with the ability to cure in sections exceeding one inch in thickness, Master Bond said, making it well suited for potting and encapsulation. Widely used in electronic and optical components, it is optically clear and can transmit light well from 220-2,500 microns. It has an index of refraction of 1.45.

As is typical for silicones, MasterSil 152 is highly flexible and can withstand thermal cycling and shock. It is highly resistant to water and is serviceable over the broad temperature range of -65°F to +400°F. This potting and encapsulation compound has a six-month shelf life at room temperature in its original, unopened containers, the company claimed. It is available in one-half pint, pint, quart, gallon and five-gallon container kits.

More about Master Bond's low viscosity formulations is available at www.masterbond.com/properties/low-viscosity-adhesives-sealants-and-coatings.