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Gums and resins & discussion. Many of the substances noted in the following discussion have synthetic counterparts that either practically eliminated or greatly reduced the production of the natural products.

Gums and resins & discussion

Gums True gums are formed from the disintegration of internal plant tissues, mostly from the decomposition of cellulose in a process called gummosis. Gums contain high amounts of sugar and are closely allied to the pectins. They are colloidal and soluble in water, either dissolving entirely or swelling, but they are insoluble in alcohol and ether. They exude naturally from the stems or in response to wounding of the plant.

Gum Arabic A dried gummy exudate obtained from Acacia senegal and related acacias. Waterproofing Textiles. Part 2. (11) Piron has invented a process for tanning textile fabrics, which renders them waterproof, and at the same time, it is said, proof against decay, while their suppleness is not diminished, and their weight not appreciably increased.

Waterproofing Textiles. Part 2

Arguing from the high state of preservation in which the bands which surround the heads of Egyptian mummies are found to this day, and which are impregnated with a kind of resin, Piron had recourse to the substance extracted from birch bark, and which is now used to perfume Russia leather. Waterproofing. Porous goods are made waterproof according to two very distinct systems.

Waterproofing

According to the first the articles are made absolutely impervious to water and air by having their pores filled up with some oily or gummy substance, which becomes stiff and impenetrable. Caoutchouc, paints, oils, melted wax, etc., ai*e of this kind. Resins. A collection of useful, reliable, practical recipes, rules, processes, methods, wrinkles and practical hints forming a reliable workshop companion for all engaged in the various industrial arts and trades.

Resins

By John Phin, Ph.D, Author Of "Success With Recipes," "Trade Secrets" "Cements And Glues," " How To Use The Microscope," Etc. Third Edition - Greatly Enlarged Preface The following pages have been prepared with very great care, the chief aim being to give none but recipes which will not disappoint those who attempt to use them. Several of the recipes here given are... Site Search. Waterproofing Textiles. Without considering the methods by which cloth is waterproofed with rubber, there are several processes in practical use by which cloth is rendered non-absorbent of water - and for all practical purposes waterproof - without materially affecting its colour or appearance, greatly increasing its weight, or rendering it entirely air-proof.

Waterproofing Textiles

These depend mainly upon the reaction between 2 or more substances, in consequence of which a substance insoluble in water is deposited in the fibres of the cloth. (1) Lowry's process. 2 oz. soap, 4 oz. glue, 1 gal. water. Soften the glue in cold water, and dissolve it together with the soap in the water by aid of heat and agitation. The cloth is filled with this solution by boiling it in the liquid for several hours, the time required depending upon' the kind of fibre and thickness of the cloth. Waterproofing Paper. Can damar varnish be used as a wood finish. Damar varnish is an excellent wood finish.

Can damar varnish be used as a wood finish

I have used it on two kitchen table tops. When dry, damar varnish is hard as nails. It dries very clear. Many layers of damar varnish can be used to coat a surface. There are two primary benefits: Irregularities will become filled (leveled, when performed carefully); and, each additional layer provides additional protection to the underlying surface. Specifically, I have used damar varnish as a finish to table tops that have been painted with oil paint, by a local artist. Dictionary of chemicals and raw products used i... Hymenaea. Fruits and seeds of Hymenaea verrucosa- MHNT Hymenaea courbaril In Colombia the trees are called algarrobo, and in Peru azúcar huayo.

Hymenaea

The Brazilian name is jatobá. Uses and properties[edit] The pulpy center of the fruits are edible and contain starch. The trees also make hard resins that are used to manufacture varnish, especially the resin from Hymenaea courbaril (jatobá) in Brazil. Dammar gum. Dammar resin from the tree Canarium strictum.

Dammar gum

Tyvek. Un article de Wikipédia, l'encyclopédie libre.

Tyvek

Le Tyvek (prononciation /ˈtaɪ-vɛk/) est un matériau synthétique non-tissé fabriqué à partir de fibres de polyéthylène. Tyvek est une marque déposée de E. I. du Pont de Nemours and Company. Survêtement en Tyvek. Le Tyvek utilisé dans le bâtiment. Fabrication[modifier | modifier le code] Le Tyvek est un textile non-tissé de fibres de polyéthylène haute densité (HDPE) d'une épaisseur entre 0,5 et 10 μm. Le Tyvek est commercialisé sous forme de feuilles ou de rouleaux de différentes tailles. Do It Yourself: How To Waterproof Canvas. Water, sun and other elements can ruin any outdoor fabric.

Do It Yourself: How To Waterproof Canvas

Mildew, in particular, is a threat to all outdoor cloth and is usually impossible to remove. Mildew normally occurs when items are allowed to get wet and dry slowly, again and again. Since canvas is a fabric often found in outdoor usage such as tarps and tents, it's a good idea to waterproof it to prevent mildew and dry-rot from occurring. A small piece of canvas can be spread out onto a table and treated, but for a large piece, you might need to use the kitchen floor, or your outside deck.

There are several different ways to waterproof the canvas pieces. DIY Greenland style Waterproofing Wax and waxing a canvas bag - Bushcraftliving.com Discussion Forum. Ok some of you may already do this or may know of it but some of you may not know how to make greenland wax, or if you prefer, waterproofing wac. To buy waterproofing wax its around 7 quid for a small block which is quite a lot. its easy to make so save money this way! The paraffin was £1 for 400g and the beeswax £1 for 50g and this is enough to make a lot of greenland style wax - i have a massive block now and am prob not ever going to use it all up!

All you need is paraffin wax and beeswax weigh it out in a 90% paraffin wax to 10% beeswax ratio (or thereabouts) I used 250grams of paraffin and 25g or beeswax. so i have some left over. The analysis of resins, balsams, and gum resins : Dieterich, Karl, 1869-1920. eBook and Texts > Canadian Libraries > University of Toronto - Gerstein Science Information Centre > The analysis of resins, balsams, and gum resins View the book (~462 pg)Read Online (20.9 M)PDF (18.3 M)B/W PDF (457.1 K)EPUB(~462 pg)Kindle(~462 pg)Daisy (744.1 K)Full Text (10.8 M)DjVu All Files: HTTPS Torrent (2/0) Help reading texts Resources. ETFE. Ethylene tetrafluoroethylene, ETFE, a fluorine based plastic, was designed to have high corrosion resistance and strength over a wide temperature range.

ETFE is a polymer and its source-based name is poly(ethene-co-tetrafluoroethene). ETFE has a relatively high melting temperature, excellent chemical, electrical and high energy radiation resistance properties. When burned ETFE releases hydrofluoric acid. Chemical, mechanical, physical, and thermal properties[edit] Making Pine-Pitch Adhesive. Waterproofing Wood. Question: I did read your "recipe" and it looks like what I need. I like to waterproof the exterior wood sills on my screened in porch and would like to find out if your "sauce" can be used for that purpose? Would it span small cracks such as two pieces of adjoining wood stops? Can I stain the surfaces after your "sauce" dries?

Cutler's resin

DIY House Paint. Conventional paint and woodstain emit toxins that are dangerously toxic to the environment and your family. Breathe easier by replacing these with the following recipes for making paint using an array of household items. Making gentler demands on the environment, and the pocket. This is an old method, pioneers used with things like flour and milk. Milk paint was originally made from all organic raw materials; curdled milk, lime, and pigment.

Tung oil. The name is often used by paint and varnish manufacturers as a generic name for any wood finishing product that contains the real tung oil and/or provides a finish that resembles that obtained with it.[3] History[edit] The tung oil tree originates in southern China and was cultivated there for tung oil, but the date of cultivation remains unknown.[4] During the Song Dynasty, tung oil was used for waterproofing on ships.[5] Tung oil is etymologically derived from the Chinese tongyou.[6] Uses[edit] Wood finishing[edit] Showing the golden effect of polymerized tung oil versus bare wood. Tar. PSG FAQ: Crafts. The 13.1. Produits de Construction, Etanchéité, Hydrofuges, Mortiers Réparation, Ragréage, Mastics - Everfast. Membranes d'étanchéité sur Batiproduits. Élastomère. Un article de Wikipédia, l'encyclopédie libre. La membrane d’étanchéité végétale. - Derbigum France. Brochure_Derbipure_FR.pdf (Objet application/pdf)

Bioplastique. Un article de Wikipédia, l'encyclopédie libre. Le terme bioplastiques désigne des matériaux de deux types. Geomembrane. Geodesic Dome Shingle Roofing Technique. Bitume. Un article de Wikipédia, l'encyclopédie libre. Le bitume est une substance composée d'un mélange d'hydrocarbures, très visqueuse (voire solide) à la température ambiante et de couleur noire. Connu depuis la plus haute Antiquité sous forme naturelle, il provient, de nos jours, presque exclusivement de la distillation des pétroles bruts. Dans le langage courant, on le confond souvent avec le goudron d'origine houillère, ou avec l'asphalte dont il n'est qu'un composant.

Morceaux de bitume provenant d'un gisement naturel en bordure de la mer Morte. Histoire[modifier | modifier le code] De l'Antiquité à la révolution industrielle[modifier | modifier le code] liant ;produits pharmaceutiques - servant notamment à la conservation des momies égyptiennes - et cosmétologiques ;mais surtout, et ce dans tout le bassin méditerranéen, au calfatage des navires ;c'est également grâce au bitume de Judée que Nicéphore Niépce inventera la photographie à Saint-Loup-de-Varennes en 1824[1].