摘要:
The present invention relates to a linear ethylenic block copolymer comprising in each block at least one ionic hydrophilic unit, which may be different from one block to another, the said ionic hydrophilic unit being present in each block in a proportion of from 2% to 100% by weight relative to the weight of the said block.The invention also relates to a cosmetic or pharmaceutical composition comprising such a copolymer, and also to a cosmetic process for making up or caring for keratin materials using the said composition.
摘要:
The present invention describes linear or star block copolymers, their process of preparation and their use in adhesive compositions, in particular as pressure-sensitive adhesive. The copolymers of the invention are prepared by controlled radical polymerization by nitroxides; they exhibit at least one soft block with a Tg of less than 0° C. and at least one hard block with a Tg of greater than ambient temperature.
摘要:
The present invention relates to a linear ethylenic block copolymer comprising in each block at least one ionic hydrophilic unit, which may be different from one block to another, the said ionic hydrophilic unit being present in each block in a proportion of from 2% to 100% by weight relative to the weight of the said block.The invention also relates to a cosmetic or pharmaceutical composition comprising such a copolymer, and also to a cosmetic process for making up or caring for keratin materials using the said composition.
摘要:
The present invention relates to pulverulent compositions based on carbon nanotubes which exhibit an excellent dispersibility in polymer materials and can advantageously be used as reinforcing agents and/or modifiers of conducting and/or thermal properties; they can be easily incorporated in polymer matrices in the masterblend form.
摘要:
A viscoelastic drilling fluid for drilling in underground rock formations, comprising (a) an aqueous and/or organic liquid base, (b) at least one weighting agent, in particulate form, with a mass per unit volume of at least 2 g/cm3, preferably at least 4 g/cm3, in suspension in said liquid base, and (c) carbon nanotubes with a mean diameter of between 10 and 30 nm and a specific surface in excess of 200 m2/g, preferably of between 200 m2/g and 250 m2/g and a drilling method using such a fluid.
摘要翻译:一种用于在地下岩层中钻孔的粘弹性钻井液,包括(a)水性和/或有机液体基质,(b)至少一种颗粒形式的增重剂,每单位体积的质量至少为2g / cm 3 ,优选至少4g / cm 3悬浮在所述液体基质中,和(c)平均直径为10至30nm,比表面积超过200m 2 / g,优选为200m 2 / g的碳纳米管, g和250m 2 / g,以及使用这种流体的钻孔方法。
摘要:
The present invention describes linear or star block copolymers, their process of preparation and their use in adhesive compositions, in particular as pressure-sensitive adhesive. The copolymers of the invention are prepared by controlled radical polymerization by nitroxides; they exhibit at least one soft block with a Tg of less than 0° C. and at least one hard block with a Tg of greater than ambient temperature.
摘要:
The invention relates to a linear ethylenic block copolymer comprising: at least a first block A having a glass transition temperature above 20° C.; at least a second block B having a glass transition temperature below 15° C.; and at least a third block C having a glass transition temperature above 20° C.; said first block A and third block C being identical or different and at least one of them comprising at least one monomer unit comprising at least one —CO2H and/or carboxylate —COO− functional group. Use of this copolymer in adhesive compositions and thermoplastic compositions.
摘要:
The present invention relates to a linear ethylenic block copolymer comprising in each block at least one ionic hydrophilic unit, which may be different from one block to another, the said ionic hydrophilic unit being present in each block in a proportion of from 2% to 100% by weight relative to the weight of the said block.The invention also relates to a cosmetic or pharmaceutical composition comprising such a copolymer, and also to a cosmetic process for making up or caring for keratin materials using the said composition.
摘要:
The present invention relates to a viscoelastic drilling fluid for drilling in underground rock formations, comprising (a) an aqueous and/or organic liquid base, (b) at least one weighting agent, in particulate form, with a mass per unit volume of at least 2 g/cm3, preferably at least 4 g/cm3, in suspension in said liquid base, and (c) carbon nanotubes with a mean diameter of between 10 and 30 nm and a specific surface in excess of 200 m2/g, preferably of between 200 m2/g and 250 m2/g. It also relates to a drilling method using such a fluid.
摘要翻译:本发明涉及一种用于在地下岩层中钻井的粘弹性钻井液,包括(a)水性和/或有机液体基质,(b)至少一种颗粒形式的增重剂,每单位体积的 至少2g / cm 3,优选至少4g / cm 3悬浮在所述液体基质中,和(c)平均直径为10至30nm且比表面积超过200m 2 / g的碳纳米管,优选 为200m 2 / g至250m 2 / g。 它还涉及使用这种流体的钻孔方法。
摘要:
The present invention relates to the use of poly acrylic and/or methacrylic macroinitiators in the free radical addition reaction of vinyl aromatic monomers to improve the properties of the resulting copolymer and/or composite. More particularly, the present invention relates to the production of poly acrylic and/or poly methacrylic macroinitiators having nitroxyl end groups. Using such macroinitiators in the free radical addition reaction of vinyl aromatics such as polystyrene compatibilizes the acrylic monomer in the vinyl aromatic matrix thereby improving the properties of the resulting polymer.