公开(公告)号：DE19681695T1

公开(公告)日：1998-11-05

申请号：DE19681695

申请日：1996-12-12

Applicant: ISP INVESTMENTS INC WILMINGTON

Inventor： TSENG SUSAN Y ,  WOLF PHILIP F

IPC: C08J3/24 ,  C08F2/00 ,  C08F226/10 ,  C08F226/06 ,  C08F271/02

Abstract: A polymerizable composition consisting essentially of about 50 to about 90% by weight of vinylpyrrolidone monomer, about 10 to about 50% by weight of vinyl caprolactam monomer, and about 0.5 to about 7% by weight of a crosslinker, which is capable of proliferous polymerization in the absence of base at about 80 DEG -120 DEG C.

公开(公告)号：AU6542996A

公开(公告)日：1997-04-01

申请号：AU6542996

申请日：1996-06-25

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y ,  CHUANG JUI-CHANG ,  WOLF PHILIP F ,  HELIOFF MICHAEL W ,  KRUMMEL H KARL ,  DAVIS MARY R

IPC: A61K8/04 ,  A61K8/365 ,  A61K8/368 ,  A61K8/81 ,  A61K9/16 ,  A61K9/70 ,  A61K31/19 ,  A61K31/194 ,  A61K31/20 ,  A61K31/60 ,  A61K47/32 ,  A61Q5/00 ,  A61Q5/08 ,  A61Q19/00 ,  A61Q19/02 ,  C08J3/075 ,  A61K9/14

Abstract: This invention relates to an acidic non-irritating lotion, cream or ointment for rejuvenating skin and hair which comprises a micronized, homogenized hydrogel of a crosslinked N-vinyl lactam polymer and an organic rejuvenating agent selected from the group consisting of pyruvic acid, a mono- or poly-carboxylated C1 to C20 hydrocarbon optionally substituted with from 1 to 3 hydroxy groups and ammonium and alkali metal salts of said acids and mixtures thereof including mixtures of the acids and/or said salts.

公开(公告)号：DE19681695B4

公开(公告)日：2007-01-25

申请号：DE19681695

申请日：1996-12-12

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y ,  WOLF PHILIP F

IPC: C08F226/10 ,  C08J3/24 ,  C08F2/00 ,  C08F226/06 ,  C08F271/02

Abstract: A polymerizable composition consisting essentially of about 50 to about 90% by weight of vinylpyrrolidone monomer, about 10 to about 50% by weight of vinyl caprolactam monomer, and about 0.5 to about 7% by weight of a crosslinker, which is capable of proliferous polymerization in the absence of base at about 80 DEG -120 DEG C.

公开(公告)号：AT164856T

公开(公告)日：1998-04-15

申请号：AT93903673

申请日：1993-01-25

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y ,  MANDELLA WILLIAM L ,  SMITH TERRY E ,  LOGIN ROBERT B ,  TAYLOR PAUL D

IPC: C08F6/00 ,  C08F6/10 ,  C08F6/16

公开(公告)号：AU6233894A

公开(公告)日：1994-09-26

申请号：AU6233894

申请日：1994-01-27

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y ,  WOLF PHILIP F

IPC: C07D207/38 ,  C08F226/06 ,  C07D207/267 ,  C08F26/08

公开(公告)号：CA2154767A1

公开(公告)日：1994-09-15

申请号：CA2154767

申请日：1994-02-25

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y

IPC: C08F26/10 ,  C08F226/10

Abstract: A process is described for making highly crosslinked polyvinylpyrrolidone (PVP) polymer by popcorn polymerization having a swell volume of less than about 65 ml/10 g, preferably 40-65 ml/10 g, in the absence of added crosslinking agent, and with substantially no induction period. The process comprises (a) providing a reaction mixture of vinylpyrrolidine (VP) monomer at a concentration of about 75-85 % in an aqueous basic solution, containing about 0.4-0.8 % base, under agitation, in an inert gas atmosphere, and at an initial gas pressure of at least 2 bars, (b) heating said mixture at a predetermined temperature and time sufficient to generate an active crosslinker in situ, and (c) reducing the temperature of the mixture to a temperature whereupon popcorn polymerization of said VP monomer commences substantially immediately to form the desired crosslinked PVP.

公开(公告)号：EP0738289A4

公开(公告)日：1996-07-01

申请号：EP94909726

申请日：1994-02-25

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y

IPC: C08F26/10 ,  C08F226/10

CPC classification number: C08F26/10

Abstract: A process is described for making highly crosslinked polyvinylpyrrolidone (PVP) polymer by popcorn polymerization having a swell volume of less than about 65 ml/10 g, preferably 40-65 ml/10 g, in the absence of added crosslinking agent, and with substantially no induction period. The process comprises (a) providing a reaction mixture of vinylpyrrolidone (VP) monomer at a concentration of about 75-85 % in an aqueous basic solution, containing about 0.4-0.8 % base, under agitation, in an inert gas atmosphere, and at an initial gas pressure of at least 2 bars, (b) heating said mixture at a predetermined temperature and time sufficient to generate an active crosslinker in situ, and (c) reducing the temperature of the mixture to a temperature whereupon popcorn polymerization of said VP monomer commences substantially immediately to form the desired crosslinked PVP.

公开(公告)号：EP0625994A4

公开(公告)日：1995-10-04

申请号：EP93903673

申请日：1993-01-25

Applicant: ISP INVESTMENTS INC

Inventor： TSENG SUSAN Y ,  MANDELLA WILLIAM L ,  SMITH TERRY E ,  LOGIN ROBERT B ,  TAYLOR PAUL D

IPC: C08F6/00 ,  C08F6/10 ,  C08F6/16

CPC classification number: C08F6/003 ,  C08F6/006 ,  C08L39/00

Abstract: The invention is drawn to the field of polymer purification. Two separate embodiments are presented to remove residual monomer from the polymer product. The first embodiment is the treatment of polyvinylpyrrolidone having a Fitkenscher K value of 10-90, to a monomer content of