Method and apparatus for forming and keeping molten the recessed area of a fabricated plastic product
    5.
    发明授权
    Method and apparatus for forming and keeping molten the recessed area of a fabricated plastic product 失效
    用于形成和保持熔化制造的塑料制品的凹陷区域的方法和装置

    公开(公告)号:US3898029A

    公开(公告)日:1975-08-05

    申请号:US39782773

    申请日:1973-09-17

    Abstract: In a blow-molding operation, a method of forming a recessed area in the exterior wall of the parison and maintaining the recessed area in a heated condition while the remainder of the parison is formed and cooled. Also an apparatus (ram means) employed in such a method comprising (a) an arm, (b) a head and (c) a tip. The method and apparatus find application where a gripping-action is desired or required between the fabricated product and another sub-assembly.

    Abstract translation: 在吹塑操作中,在形成并冷却型坯的其余部分的同时,在型坯的外壁中形成凹陷区域并将凹陷区域保持在加热状态的方法。 还有一种用于这种方法的装置(压头装置),包括(a)臂,(b)头部和(c)尖端。 该方法和装置找到在制造的产品和另一个子组件之间需要或需要夹紧作用的应用。

    Method and apparatus for separating water from hydrocarbons
    6.
    发明授权
    Method and apparatus for separating water from hydrocarbons 失效
    从烃类中分离水的方法和装置

    公开(公告)号:US3583904A

    公开(公告)日:1971-06-08

    申请号:US3583904D

    申请日:1969-01-22

    CPC classification number: C10G33/00

    Abstract: APPARATUS AND METHOD FOR SEPARATING WATER FROM FLOWING HYDROCARBON STREAMS WHICH CONTAIN WATER EITHER AS FREE WATER OR AS A WATER EMULSION. THE INVENTION FURTHER PROVIDES A FAIL-SAFE METHOD OF OPERATION IN THAT HYDROCARBON FLOW IS TERMINATED IF THE HYDROCARBON STREAM CONTAINS WATER AFTER PASSING THROUGH THE SEPARATING APPARATUS BECAUSE THE CAPACITY FOR WATER REMOVAL HAS BEEN EXCEEDED. SUCH BENEFICIAL RESULTS OCCUR THROUGH THE USE OF A MATERIAL OR COMBINATION OF MATERIALS NORMALLY PERMITTING LIQUID

    HYDROCARBON FLOW BUT WHICH, IN THE PRESENCE OF WATER, FORMS A BARRIER TO INHIBIT LIQUID FLOW.

    STABILIZATION OF POLYPROPYLENE
    10.
    发明专利

    公开(公告)号:CA939438A

    公开(公告)日:1974-01-01

    申请号:CA782747

    申请日:1959-09-18

    Abstract: Polypropylene is stabilized with a composition comprising (a) a hundred phenol selected from 2, 4, 6 - trialkyl phenols, and phenols of the formula, where B is a radical selected from the group consisting of and wherein n is 0 to 8, one A on each ring is a hydroxyl group and the other is R1, X is selected from R and hydroxyl, R is a 1-16 hydrocarbon radical, and R1 is R or hydrogen, and (b) a thio compound selected from (1) metal dialkyl dithiocarbamates of the general formula where M is a Group IIa metal and R1 and R2 are hydrocarbon radicals of 1 to 6 carbon atoms, (2) trialkyl trithiophosphites, (3) thioethers of carboxylic acid esters of the formula, where r is a hydrocarbon radical, and n is an integer from 1 to 6, and (4) thioethers of the formula R-S-R, where R is a hydrocarbon radical. Components (a) and (b) are each present in the composition in an amount of 0,005 to 2 parts by weight. The composition may also include an epoxy resin such as one made by the condensation of a bisphenol and epichlorohydrin. TThe Specification mentions a large number of suitable ingredients for the composition. Compositions exemplified are (1) two ingredient systems consisting of 2,21-methylene-bis-(4-ethyl-6-t-butyl phenol) and zinc dibutyl dithiocarbamate, or dilauryl thiodipropionate, or dihexadecyl sulphide, 4,41\-methylene-bis-(2,6-di-t-butyl-phenol and dilauryl thiodipropionate, bis(2-hydroxy-3-t-butyl-5-methylphenylmethyl) durene and dilauryl thiodipropionate, or trilauryl trithiophosphite, 2-6-bis(2-hydroxy-3-t-butyl-5-methyl benzyl) 4,methyl phenol, and dilauryl thiodipropionate, 2,6-and zinc dibutyl di-thiocarbamate, or dilauryl thiodipropionate, or trilauryl trithiophosphite, or dihexadecyl sulphide, (2) three ingredient systems consisting of 2,21-methylene-bis(4-ethyl-6-t-butyl phenol) zinc dibutyl thiocarbamate, and calcium stearate or barium-cadmium laurate, 2,6-di-t-butyl-p-cresol, calcium stearate and dilauryl thiodipropionate or zinc dibutyl dithio carbamate, 4,41-methylene-bis(2,6-di-t-butyl phenol, dilauryl thiodipropionate, and calcium stearate or barium-cadmium laurate, 2,6-bis(2-hydroxy-3-t-butyl-5-methyl benzyl)-4-methyl phenol, trilauryl trithio phosphite, and butyl epoxy stearate, bis(2-hydroxy-3-t-butyl-5-methyl phenyl methyl) durene, dilauryl thiodipropionate, and calcium stearate, and (3) four ingredient systems consisting of 2,21-methylene-bis-(4-ethyl-6-t-butyl phenol) or 4,41-methylene-bis(2,6-di-t-butyl phenol, calcium stearate, an epoxy resin, and dilauryl thiodi-propionate or dihexadecyl sulphide, and 2,6-di-t-butyl-p-cresol, dihexadecyl sulphide, calcium stearate, and an epoxy resin. Polypropylene stabilized with the above compositions is stated to be resistant to heat degradation for periods in excess of 400 hours at 280 DEG F.

Patent Agency Ranking