Chevron Research Company

Richard C Fox

Robert A Stayner

Thornton K Jones

Thorton K Jones

The invention encompasses a petrolatum wax-biocidal composition and a method of preserving wood with the composition.

Biocidal wood preservative composition and method

Plastic polyolefins which are resistant to photodegradation are combined with polyisobutylene to improve photodegradability.

Photodegradability of plastic polyolefins

Disclosed is a process for joining two metal surfaces together with solder in which the surfaces to be soldered are first treated with an organic phosphorus-containing liquid flux which is relatively non-corrosive and which has a high degree of lubricity.

Process for soldering using a phosphorus-containing liquid flux

Wax-flux compositions for use in soldering processes comprising: (a) a major amount of a wax; and (b) an effective amount to cause fluxing, at or below the temperature of the piece to be soldered, of a wax-dispersible C.sub.12 to C.sub.28 aliphatic carboxylic acid.

Carboxylic acid-containing wax fluxes

Wax-flux compositions for use in soldering processes comprising: (a) a major amount of a wax; and (b) an effective amount to cause fluxing, at or below the temperature of the piece to be soldered, of a wax-soluble, phosphorus-containing acid.

Wax flux compositions

Disclosed is a wax-flux composition and a process for making a wax-flux composition comprising a normally solid chlorinated wax having a chlorine content below about 60 weight percent.

Chlorinated wax flux compositions

Wax-flux compositions for use in low-temperature soldering processes comprise (A) a major amount of a wax and (B) an effective amount to cause fluxing, at or below the soldering temperature of the piece to be soldered, of a wax-soluble alkylaryl sulfonic acid. A process for soldering electrical components to a printed circuit board comprises (A) applying a molten wax-flux composition as described above to the metal pattern side of the board, (B) allowing the wax-flux composition to solidify, (C) trimming the component leads, and (D) soldering the components to the printed circuit board.

Wax-flux composition containing alkylaryl sulfonic acid for soldering

A lead-free candle wick composition comprising a combustible wick and a stiffening agent is disclosed. The stiffening agent comprises a substantially wax-insoluble polymer or copolymer which has a Vicat softening point at least 2.5.degree.C. higher than the melting point of the candle wax and which depolymerizes or pyrolyzes to substantially completely combustible products at a temperature above said melting point and at or below the temperature of the candle flame.

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San Rafael, CA, United States of America

Richard C Fox