Synthetic lubricants of the formula: ##STR1## wherein, n is from 3 to 10; X and X' are NH or NH.sub.2, with the proviso that X and X' are not both NH.sub.2 ; Rf and Rf' are Y(C.sub.3 F.sub.6 O).sub.l CFZCO, Y(C.sub.3 F.sub.6 O).sub.l (CF.sub.2 O).sub.m CFZCO, Y(C.sub.2 F.sub.4 O).sub.l (CF.sub.2 O).sub.m CFZO, Y(CF.sub.2).sub.l-1 CO, Y(CF.sub.2).sub.l- CH.sub.2 CO, and Y(CF.sub.2).sub.l-1 CH.sub.2 CH.sub.2 CO, wherein l>m, l is an integer from 3 to 150, m is an integer from 1 to 50, Y is H--,...

Synthetic seaweed for use in inhibiting coastal erosion comprises an elongate anchor with strips of flexible non-woven material connected to the anchor. The strips may be buoyant with or without tabs of closed cell, low density foam affixed to the free end portions thereof to enhance the buoyancy of the strips whereby they maintain a generally upright position under water. Also, the strips are treated to inhibit or prevent marine growth from forming on the surface of the strips. Such treatment m...

An inorganic material akin to imogolite is synthesized. Imogolite is a natural product having tubular structure and occurs in some soils. The synthetic product has tubes of 13-17% greater diameter, and is made thus: Prepare an aqueous hydroxyaluminium silicate solution containing up to 0.5 molar aluminium and of pH 3.1 to 5.0 by acid-hydrolyzing aluminium alkoxides and (introduced not earlier than the alkoxide) tetraalkyl silicate. The atomic proportion of Si: Al is up to 0.6:1. The solution thu...

An inorganic material related to imogolite, a rare constituent of soil, which forms gels with under 1% solids concentration, is synthesized by digesting (at pH 3.1 to 5.0) soluble hydroxyaluminium complexes freshly formed at pH 3.2 to 5.5 in aqueous solution with restricted aluminium concentration.

A low viscosity synthetic lubricant is prepared by polymerizing 1-butene to an oligomer containing a number average of about 8 to 18 carbon atoms and copolymerizing the oligomer with an alpha-monoolefin having 8 to 18 carbon atoms to produce a copolymer having an average of about 20 to 40 carbon atoms. Both polymerization reactions are catalyzed by a combination of boron trifluoride and a proton donor promoter. The synthetic lubricant is preferably stripped to remove lower boiling components, su...

A synthetic firelog is made by binding cellulosic particles with a combustible binder produced by the interaction of a liquid combustible by-product or waste product and a modifier, the resulting material being such as to be carbonizable on combustion to form a porous skeleton which maintains the shape of the log during burning. The by-product may be molasses, various waste oils or pitches, or sulphite lye and the modifier interacts physically or chemically therewith to form a plastic, thixotrop...

An integrated string consisting of plural mono-filaments, each of which being fused together with adjacent mono-filaments at the contact points and externally having sharp grooves produced by twisting along its length and internally defining confined spiral bores between the component mono-filaments along its length. The external spiral grooves produced by twisting provide frictional resistance against slipping without deteriorating the specific surface tenacity and the tensile strength of the c...

A method for preparing synthetic cristobalite comprises (1) preparing a mixture containing sources for an oxide of silicon and for an oxide of boron, a base of an alkali or alkaline earth metal or precursor of such base, a polyhydric alcohol, and water; and (2) maintaining the mixture at suitable reaction conditions to effect formulation of the cristobalite, said reaction conditions comprising a reaction temperature within the range of about 30.degree. C. to about 300.degree. C., a pressure of a...

Synthetic stool, adaptable to use as a control standard in the diagnostic detection of substances contained in stools and for demonstration purposes, said stool comprising a matrix of a member selected from the group consisting of oxygen-containing organic polymers which are difficultly soluble in water and oxygen-containing inorganic solids difficultly soluble in water, a non-bleeding coloring agent adherent to said matrix and simulating the color of a stool, and a liquid selected from the grou...

Peptides containing at least four amino acid residues characterized by the presence of an amidino substituted .alpha.-amino acid such as arginine at the carboxyl terminus manifest activity to control smooth muscle contraction, histamine release and vascular permeability.