摘要:
The present invention is directed to a non-emissive, bimodal cured polymeric network which has an onset degradation temperature that is about 100.degree. C. above the onset degradation temperature of a base polymer. The novel cured polymeric network comprises the cured reaction product of the following ingredients: (a) combination of one or more liquid carrier monomers or prepolymers which combination is reactive to form a base polymer by exposure to ultraviolet (UV) radiation in the presence of a UV photosensitizer at a temperature, T.sub.uv ; and (b) between about 10 and 100 wt-% based on ingredient (a) of a combination of one or more monomers or prepolymers which combination is reactive to form a cured high temperature stable polymer by heating at a temperature, T.sub..DELTA.. Ingredient (b) is soluble or dispersible in ingredient (a) at a temperature, T.sub.s, wherein T.sub.s is equal to or lower than T.sub.uv, and T.sub.uv is at least about 50.degree. C. lower than T.sub..DELTA..
摘要:
Novel organic glass comprising a copolymer of (a) a diallyl phthalate monomer, (b) an allyl benzoate monomer and (c) a glycol bis(allylcarbonate) monomer, which has a high refractive index and excellent other physical properties such as high impact resistance, high dimension stability, excellent mechanical processing properties, excellent dyeability, excellent hard coating property, and is useful as a material for optical parts such as lenses and prisms.
摘要:
A process is described that results in the production of a hydrophilic air-drying polymer system suitable for increasing the inter-fiber bonding in a fibrous substrate material. The process comprises passing air through a monomer maintained at a temperature below about 30.degree. C., said monomer having at least two activated unsaturations, until a desired viscosity increase has been achieved.
摘要:
This specification discloses that certain polychlorinated or polybrominated aromatic hydrocarbon compounds can be incorporated in thermosetting polymer compositions to make the thermosetting compositions flame retardant without injuring the desirable physical and electrical properties of the thermosetting compositions when in the thermoset state. These polyhalogenated aromatic hydrocarbons are apparently caused to reset into the thermosetting composition, provided there is a minimum of 1 mol of a polyunsaturated monomer containing carbon to carbon unsaturation for each 3 mols of polychlorinated aromatic hydrocarbons. The thermosetting compositions generally contain a polyunsaturated monomer, a polyunsaturated polymer with carbon to carbon double bond unsaturation or a polyphenylene ether polymer which may be used in place of some or all of the polyunsaturated polymer, and a polyhalogenated aromatic hydrocarbon, containing at least 50% by weight combined chlorine or bromine and whose molecular weight is greater than 200. These thermosetting compositions can be heat cured or thermoset by a free radical initiator at a temperature of at least 130.degree. C., and can contain pigments, reinforcing fibers, release agents, coupling agents, and other incidental amounts of additives commonly used in thermosetting resin compositions.
摘要:
A diallyl phthalate resin-containing aqueous emulsion containing an aqueous emulsion of a diallyl phthalate resin of a rate of polymerization of 30 - 75 weight % consisting of 50 - 100 weight % of diallyl phthalate and 50 - 0 weight % of an alkyl acrylate, and an aqueous emulsion of a thermosetting vinyl resin consisting of 10 - 1 weight % of a vinyl compound containing a thermosetting functional group and 90 - 99 weight % of a vinyl compound not containing a thermosetting functional group, the content of said diallyl phthalate resin component to said thermosetting vinyl resin component being in a proportion of 10 - 70 weight % of the former to 90 - 30 weight % of the latter.
摘要:
Novel organic glass with a high refractive index comprising a copolymer of (a) a diallyl isophthalate monomer, (b) an allyl or methallyl benzoate monomer and (c) a diester of maleic acid and/or diester of fumaric acid monomer, which also shows excellent light resistance and excellent other physical properties such as excellent moldability, high impact resistance, high dimension stability, excellent mechanical processing properties, excellent dyeability and excellent hard coating property, and is useful as a material for optical or optoelectronic parts such as lenses, prisms, reflecting mirror and window materials.
摘要:
A diallyl terephthalate prepolymer consisting essentially of diallyl terephthalate monomer units, having(a) 10 or less of the monomer units in the carbon-carbon bonded molecular chain portion which is composed of the allyl groups of the monomer units, and either(b) an unsaturation in a range of from 40 to 70, as represented by an iodine value determined by the Wijs method,(c) a number-average molecular weight in a range of from 6,000 to 10,000 as polystyrene, and a weight-average molecular weight in a range of from 10,000 to 70,000 as polystyrene, both being determined by gel permeation chromatography, and(d) a melt viscosity in a range of from 30,000 to 90,000 CP at 170.degree. C., as determined by a Koka flow tester, or(b) an unsaturation in a range of from 50 to 80, as represented by an iodine value determined by the Wijs method,(c) a number-average molecular weight in a range of from 8,000 to 20,000 as polystyrene, and a weight-average molecular weight in a range of from 30,000 to 90,000 as polystyrene, both being determined by gel permeation chromatography, and(d) a melt viscosity in a range of from 20,000 to 90,000 CP at 130.degree. C., as determined by a Koka flow tester.
摘要:
A process for preparing a diallyl phthalate latex which comprises using in proportions of a total of 30 - 100 weight parts of monomer and a total of 0.3 - 10.0 weight parts of an anionic surfactant to a total of 100 weight parts of water, andI. carrying out the emulsion polymerization of the following emulsion polymerization system, i.e., an emulsion polymerization system comprisingA. water in an amount of 50 - 70 weight % of the total amount thereof,B. monomer in an amount of 10 - 20 weight % of the total amount thereof, said monomer being selected from the group consisting of a diallyl phthalate monomer and a diallyl phthalate-containing monomeric mixtureC. said surfactant in an amount of 10 - 20 weight % of total amount thereof, andD. a radical catalyst in toto; and, thenIi. at a period after the degree of polymerization has reached 50 weight % and before completion of the polymerization, furthering the emulsion polymerization reaction while slowly adding an additional emulsion polymerization system containing the following components but not containing said radical catalyst:A. water remaining of the total amount thereofB. monomer remaining of the total amount thereof, andC. said surfactant remaining of the total amount thereof.
摘要翻译:一种制备邻苯二甲酸二烯丙酯胶乳的方法,其包括使用总共30-100重量份单体和总共0.3-10.0重量份阴离子表面活性剂至总计100重量份水的比例,和I. 进行以下乳液聚合体系的乳液聚合,即包含A的乳液聚合体系。以50-70重量份的水,其总量的重量百分比为B,单位为10-20重量% 总共数量,由包含二元酚类单体和含二苯甲基单体单体混合物的组选择的所述单体C.以10-20重量%的总重量计的表面活性剂和D.总量为D.的放射性催化剂 IN TOTO; 和,那么二。 在聚合度达到50重量%之后并且在聚合完成之前的一段时间,在缓慢加入含有以下组分但不含所述自由基催化剂的另外的乳液聚合体系的同时进一步进行乳液聚合反应:
摘要:
Disclosed in the application are diallyl isophthalate encapsulating compositions, comprising: A. A THERMOSETTING DIALLYL ISOPHTHALATE PREPOLYMER CHARACTERIZED AS HAVING A VISCOSITY OF LESS THAN ABOUT 40 C.P.S. AT 25*C in a 50 percent solution of methyl ethyl ketone, said prepolymer being present in said composition in an amount ranging up to about 35 percent, by weight, B. A SUBSTANTIALLY PURE INERT FILLER, C. A FREE RADICAL POLYMERIZATION INITIATOR PRESENT IN AN AMOUNT SUFFICIENT TO PROMOTE THERMOSETTING OF SAID PREPOLYMER AT ELEVATED TEMPERATURES, AND D. A SMALL BUT EFFECTIVE AMOUNT OF A MOLD RELEASE AGENT, SAID ENCAPSULATING COMPOSITION BEING CHARACTERIZED AS HAVING A Brabender melt viscosity at 150*C in minimum torque of from about 30 to about 100 meter-grams and capable of providing, when cured, a substantially uniform Coefficient of Thermal Expansion at elevated temperatures such that the Coefficient of Thermal Expansion of the cured composition is less than about 45 X 10 6 In/In/*C. at 185*C.