Investment casting pattern material comprising thermally-collapsible
expanded microspheres
    2.
    发明授权
    Investment casting pattern material comprising thermally-collapsible expanded microspheres 失效
    包括热膨胀膨胀微球的熔模铸造图案材料

    公开(公告)号:US5364889A

    公开(公告)日:1994-11-15

    申请号:US873818

    申请日:1992-04-27

    CPC分类号: B22C7/02 B22C9/04

    摘要: A method and composition for forming investment casting patterns wherein thermally-collapsible microspheres are incorporated into the pattern composition. The patterns can be made either by conventional pattern forming techniques or by solid imaging techniques. After investing the microsphere containing pattern in the ceramic shell, the pattern and shell are heated, causing a collapse of the microspheres and thereby preventing cracking of the shell. The shell is then heated to burn-out the remaining pattern material and fire the shell, thereby creating a mold.

    摘要翻译: 一种用于形成熔模铸造图案的方法和组合物,其中将热可收缩微球体结合到图案组合物中。 图案可以通过常规图案形成技术或通过固体成像技术制成。 在将微球含有图案投入到陶瓷壳体中之后,图案和壳体被加热,导致微球的塌陷,从而防止壳体开裂。 然后将壳体加热以烧尽剩余的图案材料并对外壳进行火焰,从而形成模具。

    Embedded catalyst receptors for metallization of dielectrics
    3.
    发明授权
    Embedded catalyst receptors for metallization of dielectrics 失效
    用于金属化电介质的嵌入式催化剂受体

    公开(公告)号:US5112726A

    公开(公告)日:1992-05-12

    申请号:US362137

    申请日:1989-06-06

    摘要: The invention is directed to a laminate for the preparation of printed circuits by electroless plating of conductive metal thereon which comprisesa. an electrically insulative substrate bearingb. an adherent layer of crosslinked polymeric adhesive, which is insoluble in photodielectric developing solutions, having partially embedded therein finely divided particles of adsorbent which protrude from the adhesive surface away from the substrate, the protrusive surfaces of which are adsorptive with respect to electroless plating catalysts or reductive precursors thereof, andc. a solid layer of photodielectric adherently overlying the layer of adhesive and adsorbent particles.

    摘要翻译: 本发明涉及一种用于通过在其上无电镀导电金属来制备印刷电路的层压板,其包括a。 b。电绝缘基板轴承b。 交联聚合物粘合剂的粘附层,其不溶于光致介质显影溶液,其部分地嵌入有从粘合剂表面远离基材突出的细分散的吸附剂颗粒,其突出表面相对于化学镀催化剂是吸附性的 还原性前体,和c。 固态的光致电介质层贴着粘合剂层和吸附剂颗粒。

    Method and apparatus for conducting catalytic reactions with
simultaneous product separation and recovery
    6.
    发明授权
    Method and apparatus for conducting catalytic reactions with simultaneous product separation and recovery 失效
    用于同时进行产物分离和回收的催化反应的方法和装置

    公开(公告)号:US4786597A

    公开(公告)日:1988-11-22

    申请号:US479285

    申请日:1983-06-02

    摘要: Catalytic chemical and biochemical conversion reactions are carried out in a novel compartmentalized catalytic reactor which enables the energy-efficient coupling of the conversion reaction with various energy-consuming post-conversion operations. The catalytic reactor is compartmentalized by means of a multilayer composite membrane comprising a catalytic membrane layer and one or more permselective membrane layers. The arrangement and properties of the membrane layers are such as to enable the free energy change of the conversion reaction to be utilized as the required energy source for effecting various post-conversion operations, including product separation, recovery and enrichment, and second-stage catalytic conversions with unfavorable reaction equilibria.

    摘要翻译: 催化化学和生物化学转化反应在新型间隔催化反应器中进行,其使能转化反应的能量效率耦合与各种耗能的后转化操作。 催化反应器通过包含催化膜层和一个或多个渗透选择性膜层的多层复合膜分隔。 膜层的排列和性质使得能够将转化反应的自由能变化用作所需的能源,用于进行各种后转化操作,包括产物分离,回收和富集,以及第二阶段催化 具有不利反应平衡的转化。

    Double-negative positive-working photohardenable elements
    7.
    发明授权
    Double-negative positive-working photohardenable elements 失效
    双负性正性可光硬化元素

    公开(公告)号:US4123272A

    公开(公告)日:1978-10-31

    申请号:US797832

    申请日:1977-05-17

    申请人: John A. Quinn

    发明人: John A. Quinn

    CPC分类号: G03F7/0955 H05K3/0073

    摘要: A positive-working imaging element is described comprising a support coated first with a negative-working, solvent-developable, photohardenable stratum, then over-coated with a second negative-working, solvent-developable, photohardenable stratum; the second stratum serves as a mask for the first stratum since it contains ingredients which strongly absorb radiation actinic to the first stratum. The second stratum is imagewise exposed, solvent developed, and the resulting actinically opaque image used as a negative in exposing the first stratum, which is solvent developed to remove the composition in unexposed, but not in exposed areas. Optionally, a separating layer can be present between the photohardenable strata and a cover layer can be present over the second stratum. Positive-working low relief images suitable for lithographic printing plates, printed circuit resists, and contact-speed lithographic films are obtained from the elements of this invention.

    摘要翻译: 描述了一种正性成像元件,其包括首先用负性溶剂显影的可光硬化层涂覆的载体,然后用第二负性,溶剂可显影的可光硬化层覆盖; 第二层作为第一层的掩模,因为它含有强吸收对第一层的辐射光的成分。 第二层是成像曝光,溶剂显影,并且所得的光化不透明图像在暴露第一层时用作阴性,其是溶剂显影以除去未曝光但不在曝光区域中的组合物。 任选地,可光硬化层之间可以存在分离层,并且覆盖层可以存在于第二层上。 从本发明的元件获得适用于平版印刷版,印刷电路抗蚀剂和接触速度光刻胶膜的正性低浮雕图像。

    Single exposure positive-working photopolymer element
    8.
    发明授权
    Single exposure positive-working photopolymer element 失效
    单曝光正性光聚合物元件

    公开(公告)号:US4427758A

    公开(公告)日:1984-01-24

    申请号:US307648

    申请日:1981-10-01

    申请人: John A. Quinn

    发明人: John A. Quinn

    CPC分类号: G03F1/56 G03F7/11 G03F7/26

    摘要: A high speed, positive-working photopolymer element comprising, in order: (1) a support, (2) a nonphotosensitive layer comprising a hardenable binder (e.g., gelatin) containing a releasable hardener (e.g., glutaraldehyde-bisulfite), and an optional colorant, and (3) a permeable photopolymerizable layer. Imagewise exposure of the photopolymerizable layer is followed by diffusion of an alkali through the nonimage area, releasing the hardener. A subsequent wash-off step produces a positive image of the original.

    摘要翻译: 一种高速正性光聚合物元件,其顺序包括:(1)载体,(2)包含含有可释放硬化剂(例如戊二醛 - 亚硫酸氢盐)的可硬化粘合剂(例如明胶)的非光敏层和任选的 着色剂和(3)可渗透的光聚合层。 可光聚合层的图像曝光之后是通过非图像区域的碱的扩散,释放硬化剂。 随后的洗涤步骤产生原始的正面图像。

    Enlargement of photopolymer images in photopolymer mask
    9.
    发明授权
    Enlargement of photopolymer images in photopolymer mask 失效
    在光聚合物掩模中增加光聚合物图像

    公开(公告)号:US4518666A

    公开(公告)日:1985-05-21

    申请号:US509702

    申请日:1983-06-30

    CPC分类号: G03F1/56 G03F7/40

    摘要: Process of enlarging image areas covered by a stencil or relief image area formed in a photopolymer mask consisting essentially of (a) contacting said image area with a swelling agent and optionally a diluent to effect enlargement, and (b) removing excess swelling agent, i.e., evaporation, air impingement including heating. Additional image enlargement is possible by further contacting the image with a more concentrated swelling agent. The process is particularly useful in enlarging halftone image dots of photopolymer litho masks wherein the halftone image areas consist of hardened upper skins which rest on softer undervolumes having a lesser degree of polymerization or hardening.

    摘要翻译: 扩大由在光聚合物掩模中形成的模板或浮雕图像区域覆盖的图像区域的过程,其基本上由(a)使所述图像区域与溶胀剂和任选的稀释剂接触以实现扩大,和(b)除去过量的溶胀剂,即 ,蒸发,空气冲击,包括加热。 通过进一步使图像与更浓缩的溶胀剂接触可以进一步增加图像。 该方法在扩大光聚合物光刻掩模的半色调图像点中特别有用,其中半色调图像区域由硬化的上皮层组成,其固化在具有较低聚合或硬化程度的较软的下体积上。

    Gas concentration analysis method and system
    10.
    发明授权
    Gas concentration analysis method and system 失效
    气体浓度分析方法和系统

    公开(公告)号:US4208902A

    公开(公告)日:1980-06-24

    申请号:US971613

    申请日:1978-12-20

    IPC分类号: G01N7/10

    CPC分类号: G01N7/10

    摘要: A method and system for analyzing gas concentration by measuring the steady state pressure in a dual membrane cell. A first membrane is exposed to a test gas and a second membrane to a reference gas where the first and second membranes have differing permeabilities. The test gas and the reference gas continuously counterdiffuse through the membranes and the steady state pressure in the intermembrane space is directly proportional to the gas concentration of the test gas component.

    摘要翻译: 通过测量双膜电池中的稳态压力来分析气体浓度的方法和系统。 将第一膜暴露于测试气体和第二膜到参考气体,其中第一和第二膜具有不同的渗透性。 试验气体和参考气体通过膜连续反向扩散,膜间空间中的稳态压力与试验气体组分的气体浓度成正比。