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Shellac is an odour and stain blocker and so is often used as the base of "all-purpose" primers. Although its durability against abrasives and many common solvents is not very good, shellac provides an excellent barrier against water vapour penetration. Shellac-based primers are an effective sealant to control odours associated with fire damage ...
Kauri gum was also crafted into jewellery, keepsakes and small decorative items. Like amber, kauri gum sometimes includes insects and plant material. [7] Kauri gum was used commercially in varnish, and can be considered a type of copal (the name given to resin used in such a way). Kauri gum was particularly useful for this, and from the mid ...
Well known resins include amber, hashish, frankincense, myrrh and the animal-derived resin, shellac. Resins are commonly used in varnishes , adhesives , food additives , incenses and perfumes . Resins protect plants from insects and pathogens, and are secreted in response to injury. [ 2 ]
Amber is heterogeneous in composition, but consists of several resinous bodies [clarify] more or less soluble in alcohol, ether and chloroform, associated with an insoluble bituminous substance. Amber is a macromolecule formed by free radical polymerization [22] of several precursors in the labdane family, for example, communic acid, communol ...
Acer rubrum, the red maple, also known as swamp maple, water maple, or soft maple, is one of the most common and widespread deciduous trees of eastern and central North America. The U.S. Forest Service recognizes it as the most abundant native tree in eastern North America. [ 4 ]
Acer pensylvanicum, known as the striped maple, moosewood, moose maple or goosefoot maple, is a small North American species of maple. The striped maple is a sequential hermaphrodite , meaning that it can change its sex throughout its lifetime.
Acer saccharum, the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and the eastern United States. [3] Sugar maple is best known for being the primary source of maple syrup and for its brightly colored fall foliage. [4]
Japanese maple autumn leaves. Autumn leaf color is a phenomenon that affects the normally green leaves of many deciduous trees and shrubs by which they take on, during a few weeks in the autumn season, various shades of yellow, orange, red, purple, and brown. [1]