Process for the separation of polyvinyl alcohol from aqueous solutions
    1.
    发明授权
    Process for the separation of polyvinyl alcohol from aqueous solutions 失效
    从水溶液中分离聚乙烯醇的方法

    公开(公告)号:US4166033A

    公开(公告)日:1979-08-28

    申请号:US867141

    申请日:1978-01-05

    Abstract: In order to protect the environment from pollution, it is desirable to keep the polyvinyl alcohol content in waste waters as low as possible. Polyvinyl alcohol may be removed from waste waters by means of microorganisms on the the one hand, and on the other according to chemical/mechanical methods by salting-out and precipitation and subsequent separation of the solids. Advantageous is the precipitation in the form of a polyvinyl alcohol/boric acid/didiol complex, especially by means of alkaline earth metal hydroxides in an alkaline medium. Calcium hydroxide is a particularly suitable alkaline earth metal hydroxide.

    Abstract translation: 为了保护环境免受污染,最好保持废水中的聚乙烯醇含量尽可能低。 聚乙烯醇一方面可以通过微生物从废水中除去,另一方面根据化学/机械方法通过盐析和沉淀以及随后的固体分离来除去。 有利的是以聚乙烯醇/硼酸/二酚复合物的形式沉淀,特别是在碱性介质中通过碱土金属氢氧化物。 氢氧化钙是特别合适的碱土金属氢氧化物。

    Open-cell shaped article made of acetalized polyvinyl alcohol and
process for its manufacture
    4.
    发明授权
    Open-cell shaped article made of acetalized polyvinyl alcohol and process for its manufacture 失效
    由缩醛化聚乙烯醇制成的开孔型制品及其制造方法

    公开(公告)号:US4296210A

    公开(公告)日:1981-10-20

    申请号:US211332

    申请日:1980-11-26

    CPC classification number: C08J9/30 C08J9/36 C08J2329/04 C08J2329/14

    Abstract: The acetalization of polyvinyl alcohol in an acidic aqueous medium in the presence of a wetting agent yields an open-cell, solid foam when the reaction medium contains gas bubbles which are preferably produced by stirring air into the reaction mixture. By carrying out the acetalization in the presence of a nucleic acid a porous shaped article is obtained in which the cells are uniformly distributed. The dried shaped article absorbs a multiple of its weight of water. It can be used for household and industrial purposes.

    Abstract translation: 在润湿剂存在下,酸性水性介质中的聚乙烯醇缩醛化产生了开孔,固体泡沫,当反应介质含有气泡时,优选通过将空气搅拌到反应混合物中而产生。 通过在核酸存在下进行缩醛化,得到多孔成形制品,其中细胞均匀分布。 干燥的成型制品吸收其重量的重量。 它可以用于家庭和工业目的。

    Use of copolymers based on vinyl monomers and carboxylic acid amides as
a detergent additive
    7.
    发明授权
    Use of copolymers based on vinyl monomers and carboxylic acid amides as a detergent additive 失效
    使用基于乙烯基单体和羧酸酰胺的共聚物作为洗涤剂添加剂

    公开(公告)号:US5542951A

    公开(公告)日:1996-08-06

    申请号:US195861

    申请日:1994-02-10

    CPC classification number: C11D3/3769 C11D3/0021 C11D3/3773

    Abstract: Use of copolymers based on vinyl monomers and carboxylic acid amides as a detergent additiveThe present invention relates to the use of copolymers comprising75-95% by weight of the total amount of the monomer of at least one vinyl monomer which is free from carboxyl and amide groups,5-20% by weight of at least one carboxylic acid amide of the formula (I) ##STR1## in which R is a hydrogen atom or a methylol radical,R.sup.1 is a hydrogen atom or a C.sub.1 -C.sub.3 -alkyl radical andR.sup.2 is a hydrogen atom or a methyl radicaland if appropriate together with not more than 5% by weight of a copolymerizable unsaturated carboxylic acid, as a detergent additive for preventing the reabsorption of detached dyestuffs and dyestuff degradation products.

    Abstract translation: 使用基于乙烯基单体和羧酸酰胺的共聚物作为洗涤剂添加剂本发明涉及包含75-95重量%的至少一种不含羧基的乙烯基单体的单体总量的共聚物的用途,以及 酰胺基团,5-20重量%的式(I)的至少一种羧酸酰胺其中R是氢原子或羟甲基,R1是氢原子或C1-C3-烷基 R2为氢原子或甲基,如果合适的话,不大于5重量%的可共聚的不饱和羧酸作为用于防止分离的染料和染料降解产物再吸收的洗涤剂添加剂。

    Dispersion powders for water-resistant adhesives
    8.
    发明授权
    Dispersion powders for water-resistant adhesives 失效
    防水粘合剂分散粉

    公开(公告)号:US5777015A

    公开(公告)日:1998-07-07

    申请号:US760074

    申请日:1996-12-04

    Abstract: A redispersible dispersion powder comprising: a) a base polymer selected from the group consisting of vinyl ester homo- and copolymers, b) from 2 to 20% by weight, based on the overall mass of the base polymer a), of polyvinyl alcohol, said polyvinyl alcohol having a degree of hydrolysis of from 70 to 100 mol-% and a viscosity in a 4% aqueous solution of from 2 to 70 mPa.s, c) from 0 to 50% by weight, based on the overall mass of the components a) and b), of anticaking agent, d) from 0.001 to 5% by weight, based on the overall mass of the components a) and b), of water- soluble, at least bifunctional, masked aldehydes having at least 3 carbon atoms, said masked aldehydes being capable of controllably releasing aldehyde groups in an acidic medium, e) from 0 to 25% by weight, based on the overall mass of the base polymer a), of additives selected from the group consisting of film-forming auxiliaries and plasticizers, and f) from 0 to 10% by weight, based on the overall mass of the components a) and b), of free Bronsted or Lewis acids which are present as solids or adsorbed on a carrier material.

    Abstract translation: 一种可再分散的分散体粉末,其包含:a)选自乙烯基酯均聚物和共聚物的基础聚合物,b)基于聚合物的基础聚合物a)的总质量为2至20重量%的聚乙烯醇, 所述聚乙烯醇的水解度为70至100摩尔%,4%水溶液中的粘度为2至70mPa.s,c)为0至50重量%,基于 基于组分a)和b)的组分a)和b),d)基于组分a)和b)的总质量为0.001至5重量%的水溶性至少双功能的掩蔽的醛,其具有至少 3个碳原子,所述掩蔽的醛能够在酸性介质中可控制地释放醛基,e)基于基础聚合物a)的总质量为0至25重量%的选自以下的添加剂:膜 成型助剂和增塑剂,以及f)基于组分的总质量为0至10重量% a)和b),其以固体存在或吸附在载体材料上的游离Br + E,矾土+ EE nsted或路易斯酸。

    Polyvinyl acetals which can form emulsifier-free aqueous dispersions and
redispersible dry powders, processes for their preparation and their use
    9.
    发明授权
    Polyvinyl acetals which can form emulsifier-free aqueous dispersions and redispersible dry powders, processes for their preparation and their use 失效
    可以形成无乳化剂的水分散体和可再分散的干粉的聚乙烯醇缩醛,其制备方法及其用途

    公开(公告)号:US5559175A

    公开(公告)日:1996-09-24

    申请号:US394418

    申请日:1995-02-24

    CPC classification number: C08F8/28 C08F2800/20

    Abstract: Preparation of polyvinyl acetals which can form emulsifier- and surfactant-free aqueous dispersions and redispersible dry powders and contain copolymeric polyvinyl acetals with, in amounts sufficient to form a dispersion, comonomer units carrying sulfo salt groups which are derived from copolymeric polyvinyl alcohol (PVALs) which contained comonomer units carrying sulfonate groups in the salt form. The preparation is carried out by acetalization of the starting polyvinyl alcohols to be used with aldehydes or aldehyde acetals under acid-catalyzed acetalization conditions in an aqueous medium, emulsifier-free stable aqueous polyvinyl acetal dispersions being obtained, from which dry redispersible polyvinyl acetal powders can be obtained by spray drying or freeze drying. The polyvinyl acetals according to the invention can be plasticized by mixing in plasticizers both in their aqueous dispersion form and in the dry powder form. The polyvinyl acetals according to the invention can be employed, both in the aqueous dispersion form and in the dry powder form, in numerous fields of use where polyvinyl acetals of the type known to date are already usually used. Moreover, because of the advantageous spectrum of properties of polyvinyl acetals according to the invention, numerous new fields of use are accessible.

    Abstract translation: 聚乙烯醇缩醛的制备,其可以形成不含乳化剂和表面活性剂的水分散体和可再分散的干粉,并含有共聚聚乙烯醇缩醛,其量足以形成分散体,携带由共聚聚乙烯醇(PVAL)衍生的磺基盐基团的共聚单体单元 其含有以盐形式携带磺酸盐基团的共聚单体单元。 通过在酸性催化的缩醛化条件下在水性介质中将醛与醛缩醛一起使用的起始聚乙烯醇缩醛化,得到不含乳化剂的稳定的聚乙烯醇缩醛水分散体,其中可再分散的干燥聚乙烯醇缩醛粉末可由 通过喷雾干燥或冷冻干燥获得。 根据本发明的聚乙烯醇缩醛可以通过在其水分散体形式和干粉形式的增塑剂中混合而增塑。 根据本发明的聚乙烯醇缩醛可以以水分散体形式和干粉形式在许多使用领域已知的聚乙烯醇缩醛已被使用的领域中使用。 此外,由于根据本发明的聚乙烯醇缩醛的有利特性,许多新的使用领域是可及的。

    METHOD AND A SYSTEM FOR AN IDENTITY MANAGEMENT

    公开(公告)号:US20240317163A1

    公开(公告)日:2024-09-26

    申请号:US18678079

    申请日:2024-05-30

    CPC classification number: B60R16/037 G06F21/32

    Abstract: A management system for identifying and bio-monitoring at least one user of a vehicle. An associated personal module is configured to access personal data of a user and thereby identify the user. The management system includes: a vehicle-related module configured to access at least one vehicle component; and a communication module configured to enable an exchange of data between the personal module and the vehicle-related module, even when the personal module is outside the vehicle. The vehicle-related module is configured to make or allow at least one change to the at least one vehicle component based on the exchanged data.

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