A Method For Preparing Heterogeneous Micro Porous Viscoelastic Sound

A Method For Preparing Heterogeneous Micro Porous Viscoelastic Sound Absorbing/Attenuating Material With Environmentally Friendly Porogen

Abstract: A method for preparing heterogeneous micro-porous viscoelastic sound absorbing/attenuating material with environmentally friendly porogen, the method comprising: utilizing a predetermined amount of a liquid room temperature vulcanizable (RTV) elastomer and a predetermined amount of a porogen, mixing the RTV liquid elastomer and the porogen in atmosphere until a homogenous emulsion without phase separation is formed, curing the homogenous emulsion until polymerization of the emulsion is reached, to form a cured emulsion, removing a porogen from the said cured emulsion by atmospheric heating thereby forming a heterogeneous micro-porous viscoelastic sound absorbing/attenuating material.

Patent Information

Application #

Filing Date

18 April 2016

Publication Number

42/2017

Publication Type

INA

Invention Field

POLYMER TECHNOLOGY

Status

Email

lsdavar@ca12.vsnl.net.in

Parent Application

Patent Number

Legal Status

Grant Date

2021-03-11

Renewal Date

Applicants

BHARAT HEAVY ELECTRICALS LIMITED

with one of its Regional offices at REGIONAL OPERATIONS DIVISION (ROD), PLOT NO: 9/1, DJ BLOCK 3rd Floor, Karunamoyee, Salt Lake City, KOLKATA-700091, having its Registered Office at BHEL HOUSE, SIRI FORT, NEW DELHI – 110049, INDIA

Inventors

1. Dr. Seelaboyina Raghunandan

CNT, BHEL, Corp. R&D Division, Vikasnagar, Hyderabad-500093, India

2. Dr. Manoj Kumar

CNT, BHEL, Corp. R&D Division, Vikasnagar, Hyderabad-500093, India

3. Dr. Kulvir Singh

CNT, BHEL, Corp. R&D Division, Vikasnagar, Hyderabad-500093, India

4. Rallabhandi Venkata Siva Krishna Dutt

CNT, BHEL, Corp. R&D Division, Vikasnagar, Hyderabad-500093, India

Specification

DESC:Please find the attached file ,CLAIMS:Please find the attached file

Documents

Application Documents

#	Name	Date
1	Power of Attorney [18-04-2016(online)].pdf	2016-04-18
2	Form 3 [18-04-2016(online)].pdf	2016-04-18
3	Drawing [18-04-2016(online)].pdf	2016-04-18
4	Description(Provisional) [18-04-2016(online)].pdf	2016-04-18
5	Other Patent Document [11-11-2016(online)].pdf	2016-11-11
6	OTHERS [08-04-2017(online)].pdf	2017-04-08
7	Drawing [08-04-2017(online)].pdf	2017-04-08
8	Description(Complete) [08-04-2017(online)].pdf_143.pdf	2017-04-08
9	Description(Complete) [08-04-2017(online)].pdf	2017-04-08
10	Form 18 [17-05-2017(online)].pdf	2017-05-17
11	201631013377-PETITION UNDER RULE 137 [27-02-2021(online)].pdf	2021-02-27
12	201631013377-OTHERS [27-02-2021(online)].pdf	2021-02-27
13	201631013377-FER_SER_REPLY [27-02-2021(online)].pdf	2021-02-27
14	201631013377-DRAWING [27-02-2021(online)].pdf	2021-02-27
15	201631013377-COMPLETE SPECIFICATION [27-02-2021(online)].pdf	2021-02-27
16	201631013377-CLAIMS [27-02-2021(online)].pdf	2021-02-27
17	201631013377-ABSTRACT [27-02-2021(online)].pdf	2021-02-27
18	201631013377-PatentCertificate11-03-2021.pdf	2021-03-11
19	201631013377-IntimationOfGrant11-03-2021.pdf	2021-03-11
20	201631013377-FER.pdf	2021-10-03

Search Strategy

1	2020-08-2113-04-39E_21-08-2020.pdf