Composite Particles, Inc.

Air Products and Chemicals, Inc.

W. L. Gore & Associates, Inc.

Gore Enterprise Holdings, Inc.

Other

Williams, Mark a.

Ruprecht, David R.

Bauman, Bernard D.

Marsh, Paul D.

Mark Alan Williams

Bernard D Bauman

Jeffrey A Klein

David R Ruprecht

Edwin L McInnis

Paul D Marsh

Matthew A Johnson

Rajendra K Mehta

Kristy L Vonk

Reza Bagheri

Michael J Napolitano

Robert P Scharff

Bernard Daniel Bauman

Rajendra Kumar Mehta

Edwin Lee Mcinnis

Robert Paul Scharff

The present invention provides waterproof, breathable non-textile seamed articles which exhibit high levels of durability and allow wearers a high level of flexibility and article strength. This invention is of particular interest for use in dexterous hand coverings and conformable foot coverings.

Windproof waterproof breathable seamed articles

A protective sealing system with a barrier seal between two articles of apparel is provided. The system has at least two elastomeric cuffs securable to a sealing support oriented between wearer of garment and both the first cuff and the second elastomeric cuff to expand said cuffs providing a double barrier seal.

Interface system for garment barrier

Multiple-layered articles are provided which do not suffer from interlayer slippage upon application of a normal force and which are flexible and particularly well suited for use as dexterous hand coverings.

Slip resistant multi-layered articles

A one-piece manifold for use in a sprinkler valve assembly includes an intake pipe having a water inlet and a plurality of ports adapted for fluid connection to inlets of a plurality of respective sprinkler valve assemblies. An outlet is attached to the intake, such as by cross-beams, and includes a plurality of elbow segments which are non-fluidly connected to one another. Each elbow segment defines an intake port adapted to be fluidly connected to an outlet of the respective valve assemblies. An exhaust port is adapted to be fluidly connected to a sprinkler or irrigation line. Preferably, the manifolds are connectable to one another in series to accommodate any number of sprinkler lines.

Sprinkler valve manifold

A plastic article having a number of surfaces with at least one surface being modified by contacting that surface with a reactive gas atmosphere containing F.sub.2, Cl.sub.2, O.sub.2, Ozone, SO.sub.3, oxidative acids, or mixtures thereof, at a temperature and gas partial pressure sufficient to increase the surface energy of the at least one surface being modified to at least 40 dynes/cm at a temperature of 20.degree. C., to enhance bonding of non-slip polymer coatings to the modified surface, to which coatings elastomeric or rigid particles may be admixed for imparting a surface profile and increasing the coefficient of friction between the coated surface and the counter-surface.

Higher modulus compositions incorporating particulate rubber

Rubber particles, to be used as fillers or extenders for various composite polymer systems, are chlorinated by a gas-solid phase reaction with a chlorine-containing gas. A composite polymer containing the chlorinated rubber fillers or extenders exhibits a higher flexural modulus than if prepared using an unchlorinated rubber filler or extender. Chlorination of the rubber particles is carried out by contacting the finely divided rubber particles with a chlorine-containing gas comprising at least about 5 volume percent chlorine. Advantageously, the chlorine can be diluted with air, nitrogen or other essentially inert gases and may contain minor amounts of fluorine. Improved performance is obtained with nitrogen dilution of the chlorine gas over air dilution. Improved polymer composite systems having higher flexural modulus result from the use of the chlorinated rubber particles as fillers instead of unchlorinated rubber particles.

A process for making shaped articles by injecting a thermoplastic or thermoset polymer into a mold cavity in which is maintained a reactive atmosphere containing between 0.1 mole % and 50 mole % F.sub.2 and at least 20 ppm O.sub.2 while the polymer is being injected into the mold, such that any portion of the polymer contacts the reactive atmosphere for a time not greater than 0.5 sec.

Injection molding process with reactive gas treatment

The present invention is a method for improving the barrier properties of thermoplastic substrates. A surface of the thermoplastic substrate is contacted with a reactive gas stream having an F.sub.2 concentration greater than or equivalent to 0.0001 atm. partial pressure of F.sub.2 per atm. total pressure and sufficient oxygen such that the F.sub.2 /O.sub.2 ratio is less than or equal to about 100, with the remainder being additional reactive and/or non-reactive components. A barrier coating material is applied to the treated surface of the substrate and subsequently undergoes a curing step to form the final product.

Method for increasing barrier properties of thermoplastic substrates

The present invention is a process for making shaped articles by injecting a thermoplastic or thermoset polymer into a mold cavity in which is maintained at atmosphere containing between 0.1 mole % and 50 mole % F.sub.2 and at least 20 ppm O.sub.2 while said polymer is being injected into the mold. The process results in shaped articles having altered physical and chemical characteristics. A weld line formed where two interfaces of the polymer are joined in the mold cavity serves as a clean break point when pressure is applied to an article formed by the process. The atmosphere in the mold cavity may contain SO.sub.3.

Growing community of inventors

Landenberg, PA, United States of America

Mark Alan Williams