Colophony of not saturated polyester is developing of latter-day and plastic industry an important breed, there is wide application in industry, agriculture, traffic, building and respect of national defence industry. The colophony of not saturated polyester of our country although in 20 centuries 50 time already had consider and a few production, but begin development to rise from 60 time actually. 60 time are prime, industry of our country fibre glass is arisen, introduced England at the same time not saturated polyester manufactures a technology, promoted fiber to enhance the development of plastic industry. Since 70 time, industry of glass reinforced plastics begins to be popularized quickly by product of war industry, sophisticated technology civil, manufacturing technology and product breed grow quickly. Can say, colophony of not saturated polyester, fibre glass and fiber enhance plastic tripartite face to be promoted each other, mutual support, had made a burgeoning trade in our country. Reason geometry, should colophony of not saturated polyester also add gas phase 2 oxidation silicon? Normally colophony of not saturated polyester is by saturation / not saturated and binary organic acid the polymer that acid anhydride and binary alcohol react via condensation polymerization and perhaps becomes, the ropy liquid that becomes via styrene dilute again. After solidify of colophony of colophony of not saturated polyester although can be become not frit, not the material of hot solid sex of dissolve, but its are mechanical function is very low, and do not have before solidify touch denaturation, cannot satisfy major use requirement. Touch denaturation to make its are had, do not lose resinous structure and property again, should add touch suitably change agent. Reason geometry, should colophony of not saturated polyester also add gas phase 2 oxidation silicon? Accordingly, 2 oxidation silicon regards gas phase as a kind of ideal touch change agent, in lesser accretion the volume falls to be able to be achieved better touch change the effect.