摘要:
The invention relates to coatings having a contact angle hysteresis with water measured by the sessile drop method of at most 20°. The coatings can be produced from a mixture of at least two different stellate prepolymers and/or stellate prepolymer/nanoparticle complexes which may cross-link to each other and to the surface of the substrate coated, wherein the stellate prepolymers and/or stellate prepolymer/nanoparticle complex have at least three hydrophilic polymer branches before cross-linking which are themselves soluble in water with on all or a part of the free ends thereof, silyl end groups R1 of general formula (I): R1=—CRa2—Si(ORb)r(Rc)3−r, where Ra=H or straight or branched chain 1-6C alkyl, ORb=a hydrolysable group, Rc=linear or branched chain 1-6C alkyl and r=a number from 1 to 3 and the optionally non silyl end group carrying ends have reactive end groups which a reactive with each other, with the substrate to be coated optional entities included in the coating and/or with the silyl end groups with the proviso the mixture (a) has at least one stellate prepolymer with 3-5 hydrophilic polymer branches and (b) at least one stellate prepolymer and/or a stellate prepolymer/nanoparticle complex with a least 6 hydrophilic polymer branches. The invention further relates to a method for production for said coatings and stellate prepolymers as used in the coatings. The invention furthermore relates to the use of the stellate prepolymers as additives in various materials for temporary or permanent anti-soiling treatment of surfaces.
摘要:
The invention relates to coatings having a contact angle hysteresis with water measured by the sessile drop method of at most 20°. The coatings can be produced from a mixture of at least two different stellate prepolymers and/or stellate prepolymer/nanoparticle complexes which may cross-link to each other and to the surface of the substrate coated, wherein the stellate prepolymers and/or stellate prepolymer/nanoparticle complex have at least three hydrophilic polymer branches before cross-linking which are themselves soluble in water with on all or a part of the free ends thereof, silyl end groups R1 of general formula (I): R1=—CRa2—Si(ORb)r(Rc)3-r, where Ra=H or straight or branched chain 1-6C alkyl, ORb=a hydrolysable group, Rc=linear or branched chain 1-6C alkyl and r=a number from 1 to 3 and the optionally non silyl end group carrying ends have reactive end groups which a reactive with each other, with the substrate to be coated optional entities included in the coating and/or with the silyl end groups with the proviso the mixture (a) has at least one stellate prepolymer with 3-5 hydrophilic polymer branches and (b) at least one stellate prepolymer and/or a stellate prepolymer/nanoparticle complex with a least 6 hydrophilic polymer branches. The invention further relates to a method for production for said coatings and stellate prepolymers as used in the coatings. The invention furthermore relates to the use of the stellate prepolymers as additives in various materials for temporary or permanent anti-soiling treatment of surfaces.
摘要:
The present invention relates to the terminal sequencing of random genomic fragments performed with the filamentous fungus A.gossypii, to the sequences obtained therewith and the use of the sequences for forensic identification, to characterize genes and gene organization of this ascomycete by inter-genomic comparison, to identify biosynthetic genes that can be used as selection markers, to isolate promotors and terminators for application in a homologous as well as heterologous context, to find putative centromere containing clones, chromosome mapping, chromosome identifying, general information about chromosome organization and in addition to identify ORF containing SRS sequences with no homology to S. cerevisiae or any other organism which allows the identification of A. gossypii specific genes.
摘要:
The invention relates to coatings with a contact angle hysteresis in water as measured by the tilting plate method of at most 20° made from silyl-terminated linear prepolymers which may cross-link with the surface of the substrate for coating, wherein the silyl-terminated linear prepolymers may be obtained by reaction of compounds of general formula (I): X-A-X′ (I), where A=a polyoxyalkylene chain of ethylene oxide units or ethylene oxide and propylene oxide units with a maximum fraction of 50 wt. % of propylene oxide units based on the weight of A, X═OH, NH2, NHR, NR2 or OR, wherein R independently=a linear or branched 1-10 C alkyl, a 6-10 C alkaryl or aralkyl or a 5-10 C aryl and the compound of general formula (I) has a number average molecular weight of at least 100 g/mol, with compounds of general formula (II) Y—B—Si(OR1)r(R2)3−r, where Y=a group reactive with OH, NH2, NHR and/or NR2, B=a chemical bond or a divalent low-molecular weight organic group with preferably 1-50 carbon atoms, OR1=a hydrolysable group, R2=a linear or branched 1-6C alkyl and r=a number from 1 to 3 and optionally unreacted hydrogen atoms on the group X and/or the group X′ are optionally alkylated. The invention further relates to the production of such coatings and the use of the silyl-terminated linear pre-polymers from production of such coatings and application in mixtures with stellate silylated prepolymers.
摘要:
The present invention relates to coatings that possess a dynamic contact angle hysteresis in water, measured by means of a Wilhelmy balance according to DIN EN 14370, of at most 15°, and are can be manufactured from star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes that are cross-linkable with one another and with the surface of the substrate to be coated, the star-shaped prepolymers and/or star-shaped prepolymer-nanoparticle complexes possessing, before being cross-linked, at least three hydrophilic polymer arms that, considered of themselves, are soluble in water, and that carry on all or on some of their free ends R1 silyl terminal groups of the following general formula (I): R1 is —CRa2—Si(ORb)r(Rc)3-r, where Ra denotes hydrogen or a linear or branched alkyl group having 1 to 6 carbon atoms, ORb denotes a hydrolyzable group, Rc denotes a linear or branched alkyl group having 1 to 6 carbon atoms, and r denotes a number from 1 to 3, and that carry, on the optionally present ends not carrying silyl terminal groups, reactive groups that are reactive with respect to themselves, the substrate to be coated, entities optionally introduced into the coating, and/or with the silyl terminal groups. The present invention furthermore relates to a method for manufacturing such coatings, and to star-shaped prepolymers that are used in the coatings. The invention moreover relates to use of the star-shaped prepolymers as additives to various agents for temporary or permanent anti-soiling finishing of surfaces.
摘要翻译:本发明涉及在水中具有动态接触角滞后的涂层,其通过根据DIN EN 14370的Wilhelmy平衡测量为至多15°,并且可以由星形预聚物和/或星形预制物制造, 形状预聚物 - 纳米颗粒复合物,其彼此可交联并与待涂覆的基底的表面,星形预聚物和/或星形预聚物 - 纳米颗粒络合物在交联之前具有至少三个 亲水性聚合物臂,其本身可以溶于水,并且在其一部分自由端上进行。其中R 1是-CR a 2 -Si(OR b)r(OR b)r Rc)3-r,其中Ra表示氢或具有1至6个碳原子的直链或支链烷基,ORb表示可水解基团,Rc表示具有1至6个碳原子的直链或支链烷基,r表示数 从1到3,并携带,在 任选地存在不携带甲硅烷基端基的末端,对其自身具有反应性的反应性基团,待涂布的基材,任选地引入涂层中的实体和/或甲硅烷基末端基团。 本发明还涉及制造这种涂层的方法以及用于涂层中的星形预聚物。 此外,本发明涉及使用星形预聚物作为各种试剂的添加剂用于表面的临时或永久性防污整理。