Starch resins

Table 13.8 Screw 1 Channel Dimensions for a 114.3 mm Diameter, 30 L/D Barrier Double Wave Screw for Running a Starch-Resin Formulation...

N.A. Steroidal saponins, phytosterols (beta- sitosterol), starch, resin, sarsapic acid, minerals.99 Anti-inflammatory and cleansing. Relieve skin eczema, psoriasis, itchiness. 

In some blackpowder type mixtures, especially those for mining purposes, charcoal is partially or wholly replaced by carbon black, brown coal, pitch from coal tar, coal tar itself, naphthalene, paraffin, wood bark, cellulose or wood meal, starch, resin etc. Thus mixtures are obtained with properties similar to blackpowder. Generally, however, they bum more slowly and are more difficult to ignite. 

Since some essential components of the cosmetics and condiments are unstable and volatile, CD-modified super water-absorbing starch resin was applied to absorb these components. For a long time, CDPs have been used as the encapsulation material for including food additives, cosmetics and condiments. 

An approach to use also biopolymers, like PLA, PHB, starch, resins from furfuryl alcohol and vegetable oils in wood like plastics has often been considered in the past [2, 8, 9, 14-22, 35 4]. Compounding of the fibres with the thermoplastic biopolymers provides granules... 

Different-sized bamboo fillers were obtained and incorporated into starch matrices. In this context Takagi and Ichihara (2004) investigated the effect of the dimension of short bamboo fibers and their concentration on mechanical properties of a starch-resin material. When bamboo fibers with smaller lengths than 15 mm were used, both tensile and flexural strengths of the composites tended to increase with the increment of the fiber dimensions. The authors also observed that this significant increment in the strengths parameters was experienced for samples with filler contents of up to a 10 wt%, but it did not happen in the cases of composites containing more than a 20 wt% of bamboo fibers. 

Other constituents present include starch, resin, ethyl alcohol, and a trace of a volatile oil (karrer Merck). 

P.V. (2008) Sorption characteristics of water, oil and diesel in cellulose nanofiber reinforced corn starch resin/ramie fabric composites. Compos. Interfaces, 15, 281-299. 

Seam adhesives are used in manufacturing the side, center, bottom and diagonal seams of the envelopes. Several different types are used including dextrin, resin, and dextrin/resin and starch/resin blends. The specific type used depends on the required adhesion level, application method and machine speed. As the envelope producing machine speed increases, dextrin and dextrin/resin are being replaced by starch/resin blends which are applied by roller, stencil or extrusion. 

Ochi [16] studied the properties of high strength unidirectional composites made by using an emulsion-type starch resin as the matrix and Manila hemp fibers as the reinforcement. The tensile and flexural strengths and tensile and flexural moduli increased linearly with increasing fiber content up to 70%. Excellent mechanical properties were achieved for composites fabricated by a novel hot press technique used in this study. 

Brown resinous product formed. Aliphatic aldehydes (except formaldehyde) carbohydrates and soluble starch (sucrose and ordinary starch only faintly coloured). 

Polymers. AH nitro alcohols are sources of formaldehyde for cross-linking in polymers of urea, melamine, phenols, resorcinol, etc (see Amino RESINS AND PLASTICS). Nitrodiols and 2-hydroxymethyl-2-nitro-l,3-propanediol can be used as polyols to form polyester or polyurethane products (see Polyesters Urethane polymers). 2-Methyl-2-nitro-l-propanol is used in tires to promote the adhesion of mbber to tire cord (qv). Nitro alcohols are used as hardening agents in photographic processes, and 2-hydroxymethyl-2-nitro-l,3-propanediol is a cross-linking agent for starch adhesives, polyamides, urea resins, or wool, and in tanning operations (17—25). Wrinkle-resistant fabric with reduced free formaldehyde content is obtained by treatment with... 

Rosin sizing usually involves the addition of dilute aqueous solutions or dispersions of rosin soap size and alum to a pulp slurry (44—46). Although beater addition of either coreactant is permissable, addition of both before final pulp refining is unwise because subsequently exposed ceUulose surfaces may not be properly sized. The size and alum should be added sufficiendy eady to provide uniform distribution in the slurry, and adequate time for the formation and retention of aluminum resinates, commonly referred to as size precipitate. Free rosin emulsion sizes, however, do not react to a significant degree with alum in the pulp slurry, and addition of a cationic starch or resin is recommended to maximize retention of size to fiber. Subsequent reaction with aluminum occurs principally in the machine drier sections (47). 

Polymers. In combination with various metal salts, sorbitol is used as a stabilizer against heat and light in poly(vinyl chloride) (qv) resins and, with a phenohc antioxidant, as a stabilizer in uncured styrene—butadiene mbber (qv) compositions and in polyolefins (see Heat stabilizers Olefin POLYMERS Rubbercompounding). Heat-sealable films are prepared from a dispersion of sorbitol and starch in water (255). Incorporation of sorbitol in coUagen films gready restricts their permeabiUty to carbon dioxide (256). 

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