摘要:
A soil conditioner is described, which contains an electrolyte that is compatible with the soil and an invert sugar in a ratio of about 20:1 to 1:10. This material is active not only in the normal agricultural area, but also in the forestry area as a highly efficient soil conditioner. The soil is consequently regenerated, so that the plants assimilate better and noticeable increases in yield are achieved in the agricultural area.
摘要:
A moisture sensitive material prepared by crosslinking cellulose acetate through at least one compound selected from the group consisting of compounds containing two or more isocyanate groups; compounds containing two or more epoxy groups; compounds containing two or more carboxyl groups ##STR1## and acid anhydrides of carboxylic acids.
摘要:
Compositions containing sulfuric acid and one or more of certain chalcogen-containing compounds in which the chalcogen compound/H.sub.2 SO.sub.4 molar ratio is below 2 contain the mono-adduct of sulfuric acid which is catalytically active for promoting organic chemical reactions. Suitable chalcogen-containing compounds have the empirical formula ##STR1## wherein X is a chalcogen, each of R.sub.1 and R.sub.2 is independently selected from hydrogen, NR.sub.3 R.sub.4, and NR.sub.5, at least one of R.sub.1 and R.sub.2 is other than hydrogen, each of R.sub.3 and R.sub.4 is hydrogen or a monovalent organic radical, and R.sub.5 is a divalent organic radical. Such compositions are useful for catalyzing organic reactions such as oxidation, oxidative addition, reduction, reductive addition, esterification, transesterification, hydrogenation, isomerication (including racemization of optical isomers), alkylation, polymerization, demetallization of organometallics, nitration, Friedel-Crafts reactions, and hydrolysis. Novel catalysts are disclosed which involve combinations of the chalcogen compound-sulfuric compositions with one or more transition metal halides and/or with one or more surfactants. The surfactant-containing compositions are particularly useful for the treatment of materials containing lipophilic substances. Novel compositions containing a chalcogen compound-sulfuric acid component and one or more organic reactants are also disclosed.
摘要:
A process for converting cellulose-containing refuse into a fuel comprising forming a suspension of said cellulosic material in a polycyclic hydrogen donor substance and hydrogenating the suspension at elevated temperature and pressure in the presence of a catalyst to produce a mixture of gaseous, liquid and solid hydrocarbons having a low oxygen content and correspondingly high calorific value.
摘要:
At least substantially, if not entirely, undried comminutated fibrous plant cellulosic materials, particularly "wet" sawdust, is made into integrally bonded composition and shaped and fabricated articles therefrom using an inexpensive, exceptionally and adequately hydrophylic binder which under certain conditions and in particularized situations may be prepared with minimized (and sometimes even no or essentially no) artificially-induced thermal drying requirements in or for the production of cohesively-resultant, particulate-containing artificial wood and equivalent products capable of replacing natural stock; the binder constituent for the accomplishment of same being, for example and without limitation(s), ordinary household bleach (i.e., aqueous sodium hypochlorite) composition(s) and its like, more-strongly-concentrated preparations and/or possible equivalents thereof and substitutes therefor such as bleach powder (i.e., calcium hypochlorite), swimming pool chlorine/bromine- and oxygen-release compounds, elemental chlorine and so forth to get a complex carbohydrate break-down resulting in an internally-so-generated hydrophylic, water-absorptive (i.e., actually water-absorbing) and binding adhesive material. The "wet" sawdust or equivalent undried cellulosic raw material may oftentimes with considerable benefit be admixed with certain types of lower carbohydrates, such as plain starch from wheat, corn, soybeans, potatoes, etc., and even sugar, to facilitate the integral bonding effect of being directly converted to a desired shaped-article product. Other functional additives may also be selectively and usefully for certain desired end results be incorporated in the "wet" sawdust and the like compositions and products.
摘要:
A process for the preparation of substantially water-insoluble, particulate sodium carboxymethyl cellulose, suitable for use as an absorbent in tampons and other catamenial devices, or the like. The process involves treating solid, water-soluble sodium carboxymethyl cellulose having a degree of substitution of at least 0.4 with hydrogen chloride gas and heating the carboxymethyl cellulose, either after the hydrogen chloride treatment or concurrently therewith, to produce a cross-linked, insoluble, partially acid form carboxymethyl cellulose suitable for absorbent applications.
摘要:
Alkali metal polyhydroxy lignin-cellulose polymer is produced by reacting an organic polyhydroxy compound with broken-down alkali metal lignin-cellulose polymer. The alkali metal polyhydroxy lignin-cellulose polymer will react with polyisocyanate to produce foam products which may be used for thermal or sound insulation.
摘要:
Polyester resins are produced by chemically reacting a broken-down alkali metal lignin-cellulose polymer, a substituted organic hydroxy compound and a polycarboxylic acid compound and/or a polycarboxylic acid anhydride. Polyester resins may be used as molding powder, as coating agents and to produce polyurethane foams.
摘要:
Polyester resins are produced by chemically reacting a broken-down alkali metal lignin-cellulose polymer, a substituted organic hydroxy compound and a polycarboxylic acid compound and/or a polycarboxylic acid anhydride. Polyester resins may be used as molding powder, as coating agents and to produce polyurethane foams.
摘要:
This invention relates to a process for preparing polyisocyanate lignin-cellulose plastics by reaction of a lignin-cellulose polymer with a compound having at least two isocyanate groups to produce a lignin-cellulose polyisocyanate prepolymer. The prepolymer is then reacted with an organic compound to produce a polyisocyanate cellulose plastic.