Anhydrous, liquid phase process for preparing hydroxyl...

Details Anhydrous, liquid phase process for preparing hydroxyl... Anhydrous, liquid phase process for preparing hydroxyl...

2005-03-08

2005-03-08

Harlan, Robert D. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S329500, C525S333300, C525S333500, C525S333600, C525S344000, C525S346000, C525S367000, C525S369000, C525S374000, C525S378000

Reexamination Certificate

active

06864324

ABSTRACT:
An anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity comprising the steps of polymerization, purification, transesterification, purification, catalyst removal, and solvent exchange. The resultant polymer in solution can be used directly, without further processing steps, to prepare a photoresist composition.

REFERENCES:
patent: 4491628 (1985-01-01), Ito et al.
patent: 4636540 (1987-01-01), Warfel
patent: 4678843 (1987-07-01), Elmore et al.
patent: 4689371 (1987-08-01), Elmore et al.
patent: 4822862 (1989-04-01), Rupp et al.
patent: 4877843 (1989-10-01), Gupta
patent: 4898916 (1990-02-01), Gupta
patent: 4912173 (1990-03-01), Keene et al.
patent: 4931379 (1990-06-01), Brunsvold et al.
patent: 4939070 (1990-07-01), Brunsvold et al.
patent: 4962147 (1990-10-01), Vicari
patent: 5087772 (1992-02-01), Sheehan et al.
patent: 5239015 (1993-08-01), Sheehan et al.
patent: 5304610 (1994-04-01), Bhattacharya et al.
patent: 5625007 (1997-04-01), Sheehan et al.
patent: 5625020 (1997-04-01), Breyta et al.
patent: 5789522 (1998-08-01), Zampini et al.
patent: 5919597 (1999-07-01), Sinta et al.
patent: 5939511 (1999-08-01), Zampini et al.
patent: 260 104 (1988-03-01), None
patent: 277 721 (1988-10-01), None
patent: 544 324 (1993-06-01), None
patent: 605 089 (1994-07-01), None
patent: 813 113 (1997-12-01), None
patent: 0 813 113 (1997-12-01), None
patent: WO 9414858 (1994-07-01), None

Affiliated with

Also associated with

Rating

Anhydrous, liquid phase process for preparing hydroxyl... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anhydrous, liquid phase process for preparing hydroxyl..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anhydrous, liquid phase process for preparing hydroxyl... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3445875