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Cyclic olefin copolymer (COC) is an amorphous polymer made by several polymer manufacturers. COC is a relatively new class of polymers as compared to commodities such as polypropylene and polyethylene. This newer material is used in a wide variety of applications including packaging films, lenses, vials, displays, and medical devices.
An alternative process involving copolymerization with ethylene is used to make cyclic olefin copolymers (COC). These two types of cyclic olefin polymers were historically referred to as COC but are now recognized as distinct classes of polymers formed from different polymerization processes.
For example, an alternating copolymer synthesized by radical polymerization is a sequence-controlled polymer, even if it is also a non-uniform polymer, in which chains have different chain-lengths and slightly different compositions. [2] A biopolymer (for example a protein) with a perfectly-defined primary structure is also a sequence ...
Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.
block copolymer: A copolymer that is a block polymer. In the constituent macromolecules of a block copolymer, adjacent blocks are constitutionally different, ...
Non-linear polymers and copolymers, and polymer assemblies are named using the italicized qualifiers in Table 2. [5] The qualifier, such as branch, is used as a prefix (P) when naming a (co)polymer, or as a connective (C), e.g., comb, between two polymer names.
U.S. military aircraft may have spied on drug cartels during recent flights near Mexican territory, the government said Tuesday. Mexico was aware of two such U.S. military flights in late January ...
Corcoran station, an Amtrak station in California, United States whose station code is COC; Cup of China, a figure skater competition; Cyclic olefin copolymer, the chemical name for a plastic engineering resin; Continuum of Care, a program designed to promote community-wide commitment to the goal of ending homelessness