Building Project Information. On May 2, 2017, the New Bremen Schools Board of Education will be placing a bond levy on the ballot for a new K-8 building. You can find more information about the building project by using any of the Building Project links within the red navigation bar above or by clicking here.
Bitumen is the thickest form of petroleum there is, made up of 83% carbon, 10% hydrogen and lesser amounts of oxygen, nitrogen, sulphur, and other elements. It is a natural polymer of low molecular weight: at lower temperatures it is rigid and brittle, at room temperature it is flexible, at higher temperatures it flows.
What Rubber is Made From Rubber is just a combination of polymers of isoprene units and other natural substances and impurities. It is a build up of the isoprene unit molecules and is not normally made up of other synthetic materials (although sometimes these materials are used to sythesise rubber).Natural rubber comes from the sap of the rubber tree.Today's rubber is mostly a synthetic, formed from substances like latex. jb answer real rubber comes from the sap of the rubber tree. synthetic rubber does not come from latex, but is made from oil.oday's rubber is mostly a synthetic, formed from substances like latex. jb answer real rubber comes from the sap of the rubber tree. synthetic rubber does not come from latex, but is made from oil.