US5695781 * 1995年3月1日 1997年12月9日 Hallmark Pharmaceuticals, Inc. Sustained release formulation containing three different types of polymersUS5695781 1995年3月1日 1997年12月9日 Hallmark Pharmaceuticals, Inc. Sustained release formulation containing three different types of polymers...
SUSTAINED RELEASE FORMULATION CONTAINING THREE DIFFERENT TYPES OF POLYMERSnot available for EP0871435of corresponding document: WO9626717 Verapamil depot drug formulations include the pharmaceutical itself and a three component release rate controlling matrix composition. The three components of the matrix ...
The capability of hydrophobic association polymer(HAPAM) to displace oil is different from that of hydrolyzed polyacrylamide(HPAM) because they have different rheological properties.The viscoelasticity of five polymers was measured using Physica MCR301 rheometer and was compared.The five polymers include ...
aPolymers can be classified in several different ways:according to their structures,the types of reactions by which they are prepared, their physical properties,or their technological uses. 聚合物可以被分类用几别的方法:根据他们的结构、他们准备反应的种类,他们的有形资产,或者他们的技术用途。[translate...
What Are the Different Types of Plastics and Their Uses? Plastics are synthetic materials made from polymers that are extensively used in various industries because of their versatile properties such as durability, flexibility, and low cost of production. There are different types of plastics ...
Plastics and Polymers The use of plastics materials has increased dramatically throughout the world over the past 50 years, and now stands at roughly 100 billion pounds. Polymers Commercial plastics are known as resins in North America, and are made of polymers. These polymers have been compounded...
Acrylonitrile Butadiene Styrene (ABS) is an impact-resistant thermoplastic perfect for use in lightweight, yet rigid parts. The combination of polymers used to make this plastic gives it its stiffness and strength. ABS plastics also have superb resistance to corrosive chemicals such as diluted acids...
The polymerization of PLA also consumes 25 to 55 % less energy than other conventional petroleum-based polymers. Mechanical Properties: PLA has good room temperature strength and stiffness, but is not suitable for sudden impact loads. Food Safe: PLA is non-toxic and is generally recognized as ...
It consists of two conductive electrodes positioned parallel to each other and separated by an insulator, usually one of several polymers, ceramic materials, metal oxides, air or occasionally a vacuum. The value of such a capacitor, essentially it’s “spring constant” for the mechanically–...
Many modern pedestrian-only bridges are made out of modern material, while some tourist pedestrian bridges feature more exoteric designs that even include transparent polymers in the decking, enabling users unrestricted view to the area below the bridge. While the majority of modern pedestrian bridges...