Disclosed herein are paraffin suppressant compositions, and methods of making and using them. The compositions comprise a paraffin inhibitor, a hydrocarbon-soluble hydrotrope equivalent, and optionally one or more additional paraffin dispersants. When added to hydrocarbon media such as crude oils to form crude oil compositions, the suppressant compositions inhibit the precipitation of paraffin waxes in the crude oil compositions. The suppressant compositions, added to hydrocarbon media such as hydrocarbon solvents or crude oils, exhibit reduced precipitation, gelling, and/or crystallization of paraffin inhibitor from the hydrocarbon media, when the media are subjected to sustained temperatures between 4 C. and 60 C.

In one embodiment, an alkylphenol copolymer is disclosed wherein the copolymer comprises at least one alkylphenol monomer and the alkylphenol copolymer exhibits the following: an oscillation displacement of greater than 0 at a temperature of 5 C. in a first oscillation temperature sweep and an oscillation displacement in a second oscillation temperature sweep within 25% of the oscillation displacement in the first oscillation temperature sweep at a temperature of 5 C. In a further embodiment, a petroleum composition is disclosed wherein the composition comprises a petroleum source and a macromolecular compound wherein the macromolecular compound exhibits the following: an oscillation displacement of greater than 0 at a temperature of 10 C. in a first oscillation temperature sweep, and an oscillation displacement in a second oscillation temperature sweep within 25% of the oscillation displacement in the first oscillation temperature sweep at a temperature of 10 C.

Biological source oils, including, but not limited to, algae oil, stabilize the presence of asphaltenes in petroleum feedstocks, such as crude oil, to help avoid or prevent fouling and/or corrosion in the production, transferring and processing of the petroleum feedstocks. Chemical additives such as phenol-based resins, and reaction products or combinations of long chain alpha-olefins and/or small chain aldehydes and/or long chain alkyl phenate sulfides and/or metal oxide-based colloidal hydrocarbon-based nanodispersions, may also stabilize the presence of asphaltenes in petroleum feedstocks. By stabilizing is meant keeping the asphaltenes in solution in the petroleum feedstocks.

Biological source oils, including, but not limited to, algae oil, stabilize the presence of asphaltenes in petroleum feedstocks, such as crude oil, to help avoid or prevent fouling and/or corrosion in the production, transferring and processing of the petroleum feedstocks. Chemical additives such as phenol-based resins, and reaction products or combinations of long chain alpha-olefins and/or small chain aldehydes and/or long chain alkyl phenate sulfides and/or metal oxide-based colloidal hydrocarbon-based nanodispersions, may also stabilize the presence of asphaltenes in petroleum feedstocks. By stabilizing is meant keeping the asphaltenes in solution in the petroleum feedstocks.

Disclosed are multifunctional compounds represented by structural formula (I): ##STR00001##
methods of producing compounds represented by structural formula (I) and their use in inhibiting corrosion in corrodible material.

PURPOSE: To obtain the subject polymer, comprising a specific structural unit, having excellent antimicrobial, anthelmintic, antioxidizing and deodorizing actions and useful as a food, a coating, a fiber, etc. CONSTITUTION: This acrylamidomethylpolyphenol polymer comprises (A) 10-100 mol % structural unit of formula I [R<1> is H or CH3; R<2> is a group of formula II (R<3> is H or OH; R<4> is H or 3,4,5-trihydroxybenzoyl; one of a1 to a4 is a single bond and other three are H) or a group of a benzene skeleton, a naphthalene skeleton or an anthracene skeleton all having >=2 OH groups] and (B) 0-90 mol % structural unit of formula III (R<5> is R<1>; R<6> is H or an alkyl) or a structural unit of the formula [CH2-C(R<7>R<8>)][R<7> is R<1>; R<8> is H, Cl, CN, etc.]. Furthermore, the method for producing the polymer is to carry out the condensing reaction of, e.g. an acrylamide copolymer comprising the structural unit of formula III and the structural unit of the formula [CH2-C(R<7>R<8>)] with the corresponding polyphenol such as a compound of formula IV in the presence of an acidic catalyst in a reaction medium.