Abstract:
Polysulfide and polyester polymers modified with abietic acid are effective as adhesive additives for liquid polysulfide polymer based compositions used as sealants or bonding agents on various substrates such as glass or aluminum.
Abstract:
Ferrocene Polyesters that are prepared by the equation: HO2C(R)CO2H+HO(R)OH -> HO2C ((R)-CO2(R)-O2C)xRCO2H wherein HO(R)-OH is a difunctional alcohol and HO2C(R)CO2H is a difunctional acid, and (R) belongs to the group comprising alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl or alkynyl radicals which may be substituted by one or more ferrocenyl groups.
Abstract translation:二茂铁通过以下方程式制备的聚酯:HO 2 CO 2 OH [HO(OH)2 HO 2 C [(R)-CO 2(R)-O 2C] xRCO 2 H其中HO-(R)-OH是二官能醇 和HO 2 CO 2 H是双官能的酸,和(R)属于可被一个或多个二茂铁基取代的烷基,烯基,环烷基,环烯基,芳基或炔基的基团。
Abstract:
An expoxy terminated polysulfide polymer is prepared by reacting a liquid polythiol polymer with vinyl cyclohexane diepoxide. The polysulfide polymers modified with epoxy groups are effective as adhesive additives for liquid polysulfide polymer based compositions, used as sealants or bonding agents on various substrates such as glass or aluminum.
Abstract:
Contaminants are removed from MAPO by dissolving impure MAPO in a solvent selected from benzene, chloroform, or mixtures of chloroform and carbon tetrachloride, extracting a portion of the MAPO from the solvent with water, extracting a portion of the MAPO from water with methylene chloride, and removing the methylene chloride from the MAPO.
Abstract:
An observation device for inspecting elongated cavities is attached to the outer end of a cable made of pneumatic tubes and electrical conductors encased in a flexible sheath. The cable passes through a sleeve attached in an inflatable support that curves through an arc of approximately 90*, so that it enters the base of the inflatable support and emerges through the top thereof. The cable is attached to a control box containing connectors to a pressurized source of gas, a source of electrical power, and control means therefor. A series of inflatable braces concentrically surrounds the cable for supporting it in the center of the cavity to be inspected, each brace being inflatable through a pneumatic tube leading from the source of gas. The protective sheath of the cable is inflatable to impart rigidity when in use, and also to surround the pneumatic tubes with the same pressure as their interiors, so that wall thicknesses thereof may be minimized for compactness when stored.
Abstract:
WHERE R represents an alkyl having 8 to 24 carbon atoms.
WHERE R represents H or alkyl groups having 1-6 carbon atoms, e.g., hydroquinone and p-methoxy phenol, are effective additives for preventing loss of cohesive strength or loss of adhesion of cured polysulfide polymer compositions to glass where the sealant/glass interface is exposed to ultraviolet radiation, including sunlight. However, the addition of these adhesion stabilizers have an adverse effect on quick adhesion and curing rate of the sealant. Therefore, the addition of curing and adhesion rate regulators is required. Improved quick adhesion and cure rate properties are obtained by the use of quaternary ammonium chlorides represented by the formula
A liquid polysulfide polymer sealant composition for sealing glass to metal having greatly improved adhesion stability when exposed to ultraviolet radiation or sunlight transmitted through glass and greatly improved penetrometer cure and adhesion rate properties is obtained by use of hydroquinone and quinone ultraviolet radiation adhesion stabilizers and quaternary ammonium chloride curing and adhesion rate regulators. Quinone and compounds having the structure
Abstract:
Automotive brake linings having improved fade resistance can be prepared by incorporating in conventional brake linings a small amount, preferably 1% to 15% by weight of an unloaded molecular sieve.