公开(公告)号：US20240000692A1

公开(公告)日：2024-01-04

申请号：US18087891

申请日：2022-12-23

Applicant: Tata Consultancy Services Limited

Inventor： Auhin Kumar MAPARU ,  Ashish MASARKAR ,  Beena RAI

IPC: A61K8/73 ,  A61Q17/04

CPC classification number: A61K8/736 ,  B82Y30/00 ,  A61Q17/04

Abstract: Nanomaterials are an important class of materials for sunscreens. Conventional metal oxide nanoparticles are toxic in nature and leave white patches on skin after application. This disclosure provides a sunscreen composition containing biodegradable antimicrobial polymer nanoparticles as UV filter. The sunscreen composition comprising chitosan nanoparticles, at least one flavoring agent, at least one coloring agent, at least one stabilizer, and at least one preservative, in a defined form, wherein size of the chitosan nanoparticles is ranging from 200 to 900 nm. The size of the chitosan nanoparticles ranging from 200 to 400 nm for air medium, 500 to 700 nm for water medium and 700 to 900 nm for ethanol medium. The chitosan polymer is derived from chitin, a glucosamine polymer. The sunscreen composition is available in the defined form selected from a group consisting of a skin cream, a skin lotion, a powder, a gel, and a sprayable liquid.

公开(公告)号：US20130274091A1

公开(公告)日：2013-10-17

申请号：US13861643

申请日：2013-04-12

Applicant: TATA CONSULTANCY SERVICES LIMITED

Inventor： Auhin Kumar MAPARU ,  Beena RAI ,  Vivek GANVIR

IPC: B01J31/38 ,  B01J27/25 ,  B01J27/232

CPC classification number: B01J31/38 ,  B01J21/063 ,  B01J23/50 ,  B01J27/232 ,  B01J27/24 ,  B01J27/25 ,  B01J35/0013 ,  B01J35/002 ,  B01J35/004 ,  B01J35/023 ,  B01J37/0036 ,  B01J37/009 ,  B01J37/32 ,  B82Y30/00 ,  C01P2002/72 ,  C01P2002/84 ,  C01P2004/03 ,  C01P2004/52 ,  C01P2004/64 ,  C01P2006/90 ,  C09C1/3623 ,  C09C1/3653 ,  C09C1/3669 ,  C25B1/003

Abstract: Present disclosure provides a process for the synthesis of doped titania nanoparticle having photocatalytic activity greater than 90% at 2 hours under sunlight irradiation. The process involves step a) milling a mixture containing anatase titania and a precursor compound, the compound selected from the group consisting of metal and non-metal salts, in the presence of water and oxide milling media, at a temperature in the range of 20 to 50° C. for a period of 60-120 minutes, to form a slurry, wherein the amount of water is in the range of 15 to 25% by weight of the total mixture; and b) filtering the slurry to separate the oxide milling media and obtain a filtrate containing doped titania nanoparticles.

Abstract translation: 本公开提供了一种在阳光照射下在2小时合成具有大于90％的光催化活性的掺杂二氧化钛纳米颗粒的方法。 该方法包括步骤a）在水和氧化物研磨介质的存在下，在20℃的温度下研磨含有锐钛矿二氧化钛和前体化合物的混合物，选自金属和非金属盐的化合物 至50℃，时间为60-120分钟，以形成浆料，其中水的量在总混合物的15至25重量％的范围内; 和b）过滤浆料以分离氧化物研磨介质并获得含有掺杂二氧化钛纳米颗粒的滤液。

公开(公告)号：US20140290570A1

公开(公告)日：2014-10-02

申请号：US14202711

申请日：2014-03-10

Applicant: Tata Consultancy Services Limited

Inventor： Auhin Kumar MAPARU ,  Beena Rai

IPC: D06B1/14

CPC classification number: D06B1/14 ,  B05C9/14 ,  B05C11/04 ,  B05C11/045

Abstract: Disclosed is a method for producing a coated substrate using a compact, easy to handle and automated coating apparatus that can prepare coated composite in a single batch process, with sufficient control over each portion of the coating apparatus. The coating apparatus may include a coating unit, a drying unit and a pressing unit sequentially arranged in a single line to produce the coated substrate.

Abstract translation: 公开了一种使用紧凑，易于处理和自动化的涂布设备来生产涂布基材的方法，其可以在单次分批处理中制备涂覆的复合材料，并且对涂布设备的每个部分具有足够的控制。 涂布装置可以包括涂布单元，干燥单元和按顺序排列成单行的压制单元，以制造涂覆的基材。